mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-11 11:20:05 +00:00
2429 lines
81 KiB
Protocol Buffer
2429 lines
81 KiB
Protocol Buffer
// Copyright (c) 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This file is specifically named spvtools_fuzz.proto so that the string
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// 'spvtools_fuzz' appears in the names of global-scope symbols that protoc
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// generates when targeting C++. This is to reduce the potential for name
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// clashes with other globally-scoped symbols.
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syntax = "proto3";
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package spvtools.fuzz.protobufs;
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message UInt32Pair {
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// A pair of uint32s; useful for defining mappings.
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uint32 first = 1;
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uint32 second = 2;
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}
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message InstructionDescriptor {
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// Describes an instruction in some block of a function with respect to a
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// base instruction.
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// The id of an instruction after which the instruction being described is
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// believed to be located. It might be the using instruction itself.
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uint32 base_instruction_result_id = 1;
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// The opcode for the instruction being described.
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uint32 target_instruction_opcode = 2;
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// The number of matching opcodes to skip over when searching from the base
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// instruction to the instruction being described.
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uint32 num_opcodes_to_ignore = 3;
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}
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message IdUseDescriptor {
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// Describes a use of an id as an input operand to an instruction in some
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// block of a function.
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// Example:
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// - id_of_interest = 42
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// - enclosing_instruction = (
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// base_instruction_result_id = 50,
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// target_instruction_opcode = OpStore
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// num_opcodes_to_ignore = 7
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// )
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// - in_operand_index = 1
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// represents a use of id 42 as input operand 1 to an OpStore instruction,
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// such that the OpStore instruction can be found in the same basic block as
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// the instruction with result id 50, and in particular is the 8th OpStore
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// instruction found from instruction 50 onwards (i.e. 7 OpStore
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// instructions are skipped).
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// An id that we would like to be able to find a use of.
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uint32 id_of_interest = 1;
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// The input operand index at which the use is expected.
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InstructionDescriptor enclosing_instruction = 2;
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uint32 in_operand_index = 3;
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}
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message DataDescriptor {
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// Represents a data element that can be accessed from an id, by walking the
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// type hierarchy via a sequence of 0 or more indices.
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//
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// Very similar to a UniformBufferElementDescriptor, except that a
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// DataDescriptor is rooted at the id of a scalar or composite.
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// The object being accessed - a scalar or composite
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uint32 object = 1;
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// 0 or more indices, used to index into a composite object
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repeated uint32 index = 2;
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}
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message UniformBufferElementDescriptor {
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// Represents a data element inside a uniform buffer. The element is
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// specified via (a) the result id of a uniform variable in which the element
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// is contained, and (b) a series of indices that need to be followed to get
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// to the element (via fields and array/vector indices).
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//
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// Example: suppose there is a uniform variable with descriptor set 7 and
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// binding 9, and that the uniform variable has the following type (using
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// GLSL-like syntax):
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//
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// struct S {
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// float f;
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// vec3 g;
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// int4 h[10];
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// };
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//
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// Then:
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// - (7, 9, [0]) describes the 'f' field.
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// - (7, 9, [1,1]) describes the y component of the 'g' field.
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// - (7, 9, [2,7,3]) describes the w component of element 7 of the 'h' field
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// The descriptor set and binding associated with a uniform variable.
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uint32 descriptor_set = 1;
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uint32 binding = 2;
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// An ordered sequence of indices through composite structures in the
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// uniform buffer.
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repeated uint32 index = 3;
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}
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message InstructionOperand {
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// Represents an operand to a SPIR-V instruction.
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// The type of the operand.
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uint32 operand_type = 1;
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// The data associated with the operand. For most operands (e.g. ids,
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// storage classes and literals) this will be a single word.
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repeated uint32 operand_data = 2;
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}
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message Instruction {
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// Represents a SPIR-V instruction.
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// The instruction's opcode (e.g. OpLabel).
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uint32 opcode = 1;
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// The id of the instruction's result type; 0 if there is no result type.
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uint32 result_type_id = 2;
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// The id of the instruction's result; 0 if there is no result.
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uint32 result_id = 3;
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// Zero or more input operands.
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repeated InstructionOperand input_operand = 4;
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}
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message FactSequence {
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repeated Fact fact = 1;
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}
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message Fact {
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oneof fact {
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// Order the fact options by numeric id (rather than alphabetically).
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FactConstantUniform constant_uniform_fact = 1;
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FactDataSynonym data_synonym_fact = 2;
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FactBlockIsDead block_is_dead_fact = 3;
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FactFunctionIsLivesafe function_is_livesafe_fact = 4;
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FactPointeeValueIsIrrelevant pointee_value_is_irrelevant_fact = 5;
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FactIdEquation id_equation_fact = 6;
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FactIdIsIrrelevant id_is_irrelevant = 7;
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}
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}
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// Keep fact message types in alphabetical order:
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message FactBlockIsDead {
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// Records the fact that a block is guaranteed to be dynamically unreachable.
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// This is useful because it informs the fuzzer that rather arbitrary changes
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// can be made to this block.
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uint32 block_id = 1;
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}
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message FactConstantUniform {
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// Records the fact that a uniform buffer element is guaranteed to be equal
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// to a particular constant value. spirv-fuzz can use such guarantees to
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// obfuscate code, e.g. to manufacture an expression that will (due to the
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// guarantee) evaluate to a particular value at runtime but in a manner that
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// cannot be predicted at compile-time.
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// An element of a uniform buffer
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UniformBufferElementDescriptor uniform_buffer_element_descriptor = 1;
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// The words of the associated constant
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repeated uint32 constant_word = 2;
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}
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message FactDataSynonym {
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// Records the fact that the data held in two data descriptors are guaranteed
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// to be equal. spirv-fuzz can use this to replace uses of one piece of data
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// with a known-to-be-equal piece of data.
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// Data descriptors guaranteed to hold identical data.
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DataDescriptor data1 = 1;
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DataDescriptor data2 = 2;
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}
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message FactFunctionIsLivesafe {
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// Records the fact that a function is guaranteed to be "livesafe", meaning
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// that it will not make out-of-bounds accesses, does not contain reachable
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// OpKill or OpUnreachable instructions, does not contain loops that will
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// execute for large numbers of iterations, and only invokes other livesafe
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// functions.
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uint32 function_id = 1;
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}
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message FactIdEquation {
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// Records the fact that the equation:
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//
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// lhs_id = opcode rhs_id[0] rhs_id[1] ... rhs_id[N-1]
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//
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// holds; e.g. that the equation:
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//
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// %12 = OpIAdd %13 %14
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//
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// holds in the case where lhs_id is 12, rhs_id is [13, 14], and the opcode is
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// OpIAdd.
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// The left-hand-side of the equation.
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uint32 lhs_id = 1;
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// A SPIR-V opcode, from a restricted set of instructions for which equation
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// facts make sense.
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uint32 opcode = 2;
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// The operands to the right-hand-side of the equation.
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repeated uint32 rhs_id = 3;
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}
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message FactIdIsIrrelevant {
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// Records a fact that |result_id| is irrelevant (i.e. it's usage doesn't
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// change the semantics of the module). This implies that a use of this id
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// can later be replaced with some other id of the same type, or the
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// definition of |result_id| can be changed so that it yields a different value.
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// An irrelevant id.
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uint32 result_id = 1;
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}
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message FactPointeeValueIsIrrelevant {
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// Records the fact that value of the data pointed to by a pointer id does
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// not influence the observable behaviour of the module. This means that
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// arbitrary stores can be made through the pointer, and that nothing can be
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// guaranteed about the values that are loaded via the pointer.
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// A result id of pointer type
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uint32 pointer_id = 1;
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}
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message AccessChainClampingInfo {
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// When making a function livesafe it is necessary to clamp the indices that
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// occur as operands to access chain instructions so that they are guaranteed
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// to be in bounds. This message type allows an access chain instruction to
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// have an associated sequence of ids that are reserved for comparing an
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// access chain index with a bound (e.g. an array size), and selecting
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// between the access chain index (if it is within bounds) and the bound (if
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// it is not).
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//
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// This allows turning an instruction of the form:
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//
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// %result = OpAccessChain %type %object ... %index ...
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//
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// into:
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//
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// %t1 = OpULessThanEqual %bool %index %bound_minus_one
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// %t2 = OpSelect %int_type %t1 %index %bound_minus_one
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// %result = OpAccessChain %type %object ... %t2 ...
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// The result id of an OpAccessChain or OpInBoundsAccessChain instruction.
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uint32 access_chain_id = 1;
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// A series of pairs of fresh ids, one per access chain index, for the results
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// of a compare instruction and a select instruction, serving the roles of %t1
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// and %t2 in the above example.
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repeated UInt32Pair compare_and_select_ids = 2;
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}
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message SideEffectWrapperInfo {
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// When flattening a conditional branch, it is necessary to enclose
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// instructions that have side effects inside conditionals, so that
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// they are only executed if the condition holds. Otherwise, there
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// might be unintended changes in memory, or crashes that would not
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// originally happen.
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// For example, the instruction %id = OpLoad %type %ptr, found in
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// the true branch of the conditional, will be enclosed in a new
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// conditional (assuming that the block containing it can be split
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// around it) as follows:
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//
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// [previous instructions in the block]
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// OpSelectionMerge %merge_block_id None
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// OpBranchConditional %cond %execute_block_id %alternative_block_id
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// %execute_block_id = OpLabel
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// %actual_result_id = OpLoad %type %ptr
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// OpBranch %merge_block_id
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// %alternative_block_id = OpLabel
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// %placeholder_result_id = OpCopyObject %type %value_to_copy_id
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// OpBranch %merge_block_id
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// %merge_block_id = OpLabel
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// %id = OpPhi %type %actual_result_id %execute_block_id %placeholder_result_id %alternative_block_id
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// [following instructions from the original block]
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//
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// If the instruction does not have a result id, this is simplified.
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// For example, OpStore %ptr %value, found in the true branch of a
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// conditional, is enclosed as follows:
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//
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// [previous instructions in the block]
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// OpSelectionMerge %merge_block None
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// OpBranchConditional %cond %execute_block_id %merge_block_id
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// %execute_block_id = OpLabel
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// OpStore %ptr %value
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// OpBranch %merge_block_id
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// %merge_block_id = OpLabel
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// [following instructions from the original block]
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//
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// The same happens if the instruction is found in the false branch
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// of the conditional being flattened, except that the label ids in
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// the OpBranchConditional are swapped.
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// An instruction descriptor for identifying the instruction to be
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// enclosed inside a conditional. An instruction descriptor is
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// necessary because the instruction might not have a result id.
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InstructionDescriptor instruction = 1;
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// A fresh id for the new merge block.
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uint32 merge_block_id = 2;
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// A fresh id for the new block where the actual instruction is
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// executed.
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uint32 execute_block_id = 3;
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// The following fields are only needed if the original instruction has a
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// result id. They can be set to 0 if not needed.
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// A fresh id for the result id of the instruction (the original
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// one is used by the OpPhi instruction).
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uint32 actual_result_id = 4;
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// A fresh id for the new block where the placeholder instruction
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// is placed.
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uint32 alternative_block_id = 5;
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// A fresh id for the placeholder instruction.
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uint32 placeholder_result_id = 6;
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// An id present in the module, available to use at this point in
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// the program and with the same type as the original instruction,
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// that can be used to create a placeholder OpCopyObject
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// instruction.
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uint32 value_to_copy_id = 7;
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}
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message ReturnMergingInfo {
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// TransformationMergeFunctionReturns needs to modify each merge block of
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// loops containing return instructions, by:
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// - adding instructions to decide whether the function is returning
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// - adding instructions to pass on the return value of the function,
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// if it is returning
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// - changing the branch instruction (which must be an unconditional branch)
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// to a conditional branch that, if the function is returning, branches to
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// the merge block of the innermost loop that contains this merge block
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// (which can be the new merge block introduced by the transformation).
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//
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// One such merge block of the form:
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// %block = OpLabel
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// %phi1 = OpPhi %type1 %val1_1 %pred1 %val1_2 %pred2
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// %phi2 = OpPhi %type2 %val2_1 %pred1 %val2_2 %pred2
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// OpBranch %next
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//
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// is transformed into:
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// %block = OpLabel
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// %is_returning_id = OpPhi %bool %false %pred1 %false %pred2 %true %ret_bb1 %is_bb2_returning %mer_bb2
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// %maybe_return_val_id = OpPhi %return_type %any_returnable_val %pred1 %any_returnable_val %pred2
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// %ret_val1 %ret_bb1 %ret_val2 %mer_bb2
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// %phi1 = OpPhi %type1 %val1_1 %pred1 %val1_2 %pred2
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// %any_suitable_id_1 %ret_bb1 %any_suitable_id_1 %mer_bb2
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// %phi2 = OpPhi %type2 %val2_1 %pred1 %val2_2 %pred2
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// %any_suitable_id_1 %ret_bb1 %any_suitable_id_1 %mer_bb2
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// OpBranchConditional %is_returning_id %innermost_loop_merge %next
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//
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// where %ret_bb1 is a block that originally contains a return instruction and %mer_bb2 is the merge block of an inner
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// loop, from where the function might be returning.
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//
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// Note that the block is required to only have OpLabel, OpPhi or OpBranch instructions.
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// The id of the merge block that needs to be modified.
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uint32 merge_block_id = 1;
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// A fresh id for a boolean OpPhi whose value will be true iff the function
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// is returning. This will be used to decide whether to break out of the loop
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// or to use the original branch of the function. This value will also be
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// used by the merge block of the enclosing loop (if there is one) if the
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// function is returning from this block.
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uint32 is_returning_id = 2;
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// A fresh id that will get the value being returned, if the function is
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// returning. If the function return type is void, this is ignored.
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uint32 maybe_return_val_id = 3;
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// A mapping from each existing OpPhi id to a suitable id of the same type
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// available to use before the instruction.
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repeated UInt32Pair opphi_to_suitable_id = 4;
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}
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message LoopLimiterInfo {
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// Structure capturing the information required to manipulate a loop limiter
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// at a loop header.
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// The header for the loop.
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uint32 loop_header_id = 1;
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// A fresh id into which the loop limiter's current value can be loaded.
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uint32 load_id = 2;
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// A fresh id that can be used to increment the loaded value by 1.
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uint32 increment_id = 3;
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// A fresh id that can be used to compare the loaded value with the loop
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// limit.
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uint32 compare_id = 4;
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// A fresh id that can be used to compute the conjunction or disjunction of
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// an original loop exit condition with |compare_id|, if the loop's back edge
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// block can conditionally exit the loop.
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uint32 logical_op_id = 5;
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// A sequence of ids suitable for extending OpPhi instructions of the loop
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// merge block if it did not previously have an incoming edge from the loop
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// back edge block.
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repeated uint32 phi_id = 6;
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}
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message TransformationSequence {
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repeated Transformation transformation = 1;
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}
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message Transformation {
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oneof transformation {
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// Order the transformation options by numeric id (rather than
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// alphabetically).
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TransformationMoveBlockDown move_block_down = 1;
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TransformationSplitBlock split_block = 2;
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TransformationAddConstantBoolean add_constant_boolean = 3;
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TransformationAddConstantScalar add_constant_scalar = 4;
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TransformationAddTypeBoolean add_type_boolean = 5;
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TransformationAddTypeFloat add_type_float = 6;
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TransformationAddTypeInt add_type_int = 7;
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TransformationAddDeadBreak add_dead_break = 8;
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TransformationReplaceBooleanConstantWithConstantBinary
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replace_boolean_constant_with_constant_binary = 9;
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TransformationAddTypePointer add_type_pointer = 10;
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TransformationReplaceConstantWithUniform replace_constant_with_uniform = 11;
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TransformationAddDeadContinue add_dead_continue = 12;
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TransformationReplaceIdWithSynonym replace_id_with_synonym = 13;
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TransformationSetSelectionControl set_selection_control = 14;
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TransformationCompositeConstruct composite_construct = 15;
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TransformationSetLoopControl set_loop_control = 16;
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TransformationSetFunctionControl set_function_control = 17;
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TransformationAddNoContractionDecoration add_no_contraction_decoration = 18;
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TransformationSetMemoryOperandsMask set_memory_operands_mask = 19;
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TransformationCompositeExtract composite_extract = 20;
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TransformationVectorShuffle vector_shuffle = 21;
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TransformationOutlineFunction outline_function = 22;
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TransformationMergeBlocks merge_blocks = 23;
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TransformationAddTypeVector add_type_vector = 24;
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TransformationAddTypeArray add_type_array = 25;
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TransformationAddTypeMatrix add_type_matrix = 26;
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TransformationAddTypeStruct add_type_struct = 27;
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TransformationAddTypeFunction add_type_function = 28;
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TransformationAddConstantComposite add_constant_composite = 29;
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TransformationAddGlobalVariable add_global_variable = 30;
|
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TransformationAddGlobalUndef add_global_undef = 31;
|
|
TransformationAddFunction add_function = 32;
|
|
TransformationAddDeadBlock add_dead_block = 33;
|
|
TransformationAddLocalVariable add_local_variable = 34;
|
|
TransformationLoad load = 35;
|
|
TransformationStore store = 36;
|
|
TransformationFunctionCall function_call = 37;
|
|
TransformationAccessChain access_chain = 38;
|
|
TransformationEquationInstruction equation_instruction = 39;
|
|
TransformationSwapCommutableOperands swap_commutable_operands = 40;
|
|
TransformationPermuteFunctionParameters permute_function_parameters = 41;
|
|
TransformationToggleAccessChainInstruction toggle_access_chain_instruction = 42;
|
|
TransformationAddConstantNull add_constant_null = 43;
|
|
TransformationComputeDataSynonymFactClosure compute_data_synonym_fact_closure = 44;
|
|
TransformationAdjustBranchWeights adjust_branch_weights = 45;
|
|
TransformationPushIdThroughVariable push_id_through_variable = 46;
|
|
TransformationAddSpecConstantOp add_spec_constant_op = 47;
|
|
TransformationReplaceLinearAlgebraInstruction replace_linear_algebra_instruction = 48;
|
|
TransformationSwapConditionalBranchOperands swap_conditional_branch_operands = 49;
|
|
TransformationPermutePhiOperands permute_phi_operands = 50;
|
|
TransformationAddParameter add_parameter = 51;
|
|
TransformationAddCopyMemory add_copy_memory = 52;
|
|
TransformationInvertComparisonOperator invert_comparison_operator = 53;
|
|
TransformationAddImageSampleUnusedComponents add_image_sample_unused_components = 54;
|
|
TransformationReplaceParameterWithGlobal replace_parameter_with_global = 55;
|
|
TransformationRecordSynonymousConstants record_synonymous_constants = 56;
|
|
TransformationAddSynonym add_synonym = 57;
|
|
TransformationAddRelaxedDecoration add_relaxed_decoration = 58;
|
|
TransformationReplaceParamsWithStruct replace_params_with_struct = 59;
|
|
TransformationReplaceCopyObjectWithStoreLoad replace_copy_object_with_store_load = 60;
|
|
TransformationReplaceCopyMemoryWithLoadStore replace_copy_memory_with_load_store = 61;
|
|
TransformationReplaceLoadStoreWithCopyMemory replace_load_store_with_copy_memory = 62;
|
|
TransformationAddLoopPreheader add_loop_preheader = 63;
|
|
TransformationMoveInstructionDown move_instruction_down = 64;
|
|
TransformationMakeVectorOperationDynamic make_vector_operation_dynamic = 65;
|
|
TransformationReplaceAddSubMulWithCarryingExtended replace_add_sub_mul_with_carrying_extended = 66;
|
|
TransformationPropagateInstructionUp propagate_instruction_up = 67;
|
|
TransformationCompositeInsert composite_insert = 68;
|
|
TransformationInlineFunction inline_function = 69;
|
|
TransformationAddOpPhiSynonym add_opphi_synonym = 70;
|
|
TransformationMutatePointer mutate_pointer = 71;
|
|
TransformationReplaceIrrelevantId replace_irrelevant_id = 72;
|
|
TransformationReplaceOpPhiIdFromDeadPredecessor replace_opphi_id_from_dead_predecessor = 73;
|
|
TransformationReplaceOpSelectWithConditionalBranch replace_opselect_with_conditional_branch = 74;
|
|
TransformationDuplicateRegionWithSelection duplicate_region_with_selection = 75;
|
|
TransformationFlattenConditionalBranch flatten_conditional_branch = 76;
|
|
TransformationAddBitInstructionSynonym add_bit_instruction_synonym = 77;
|
|
TransformationAddLoopToCreateIntConstantSynonym add_loop_to_create_int_constant_synonym = 78;
|
|
TransformationWrapRegionInSelection wrap_region_in_selection = 79;
|
|
TransformationAddEarlyTerminatorWrapper add_early_terminator_wrapper = 80;
|
|
TransformationPropagateInstructionDown propagate_instruction_down = 81;
|
|
TransformationReplaceBranchFromDeadBlockWithExit replace_branch_from_dead_block_with_exit = 82;
|
|
TransformationWrapEarlyTerminatorInFunction wrap_early_terminator_in_function = 83;
|
|
TransformationMergeFunctionReturns merge_function_returns = 84;
|
|
TransformationExpandVectorReduction expand_vector_reduction = 85;
|
|
TransformationSwapFunctionVariables swap_function_variables = 86;
|
|
TransformationSwapTwoFunctions swap_two_functions = 87;
|
|
TransformationWrapVectorSynonym wrap_vector_synonym = 88;
|
|
// Add additional option using the next available number.
|
|
}
|
|
}
|
|
|
|
// Keep transformation message types in alphabetical order:
|
|
|
|
message TransformationAccessChain {
|
|
|
|
// Adds an access chain instruction based on a given pointer and indices.
|
|
|
|
// When accessing a struct, the corresponding indices must be 32-bit integer constants.
|
|
// For any other composite, the indices can be any 32-bit integer, and the transformation
|
|
// adds two instructions for each such index to clamp it to the bound, as follows:
|
|
//
|
|
// %t1 = OpULessThanEqual %bool %index %bound_minus_one
|
|
// %t2 = OpSelect %int_type %t1 %index %bound_minus_one
|
|
|
|
// Result id for the access chain
|
|
uint32 fresh_id = 1;
|
|
|
|
// The pointer from which the access chain starts
|
|
uint32 pointer_id = 2;
|
|
|
|
// Zero or more access chain indices
|
|
repeated uint32 index_id = 3;
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// OpAccessChain instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 4;
|
|
|
|
// Additional fresh ids, required to clamp index variables. A pair is needed
|
|
// for each access to a non-struct composite.
|
|
repeated UInt32Pair fresh_ids_for_clamping = 5;
|
|
|
|
}
|
|
|
|
message TransformationAddBitInstructionSynonym {
|
|
|
|
// A transformation that adds synonyms for bit instructions by evaluating
|
|
// each bit with the corresponding operation. There is a SPIR-V code example in the
|
|
// header file of the transformation class that can help understand the transformation.
|
|
|
|
// This transformation is only applicable if the described instruction has one of the following opcodes.
|
|
// Supported:
|
|
// OpBitwiseOr
|
|
// OpBitwiseXor
|
|
// OpBitwiseAnd
|
|
// OpNot
|
|
// To be supported in the future:
|
|
// OpShiftRightLogical
|
|
// OpShiftRightArithmetic
|
|
// OpShiftLeftLogical
|
|
// OpBitReverse
|
|
// OpBitCount
|
|
|
|
// The bit instruction result id.
|
|
uint32 instruction_result_id = 1;
|
|
|
|
// The fresh ids required to apply the transformation.
|
|
repeated uint32 fresh_ids = 2;
|
|
|
|
}
|
|
|
|
message TransformationAddConstantBoolean {
|
|
|
|
// Supports adding the constants true and false to a module, which may be
|
|
// necessary in order to enable other transformations if they are not present.
|
|
// Also, creates an IdIsIrrelevant fact about |fresh_id| if |is_irrelevant| is true.
|
|
|
|
uint32 fresh_id = 1;
|
|
bool is_true = 2;
|
|
|
|
// If the constant should be marked as irrelevant.
|
|
bool is_irrelevant = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddConstantComposite {
|
|
|
|
// Adds a constant of the given composite type to the module.
|
|
// Also, creates an IdIsIrrelevant fact about |fresh_id| if
|
|
// |is_irrelevant| is true.
|
|
|
|
// Fresh id for the composite
|
|
uint32 fresh_id = 1;
|
|
|
|
// A composite type id
|
|
uint32 type_id = 2;
|
|
|
|
// Constituent ids for the composite
|
|
repeated uint32 constituent_id = 3;
|
|
|
|
// If the constant should be marked as irrelevant.
|
|
bool is_irrelevant = 4;
|
|
|
|
}
|
|
|
|
message TransformationAddConstantNull {
|
|
|
|
// Adds a null constant.
|
|
|
|
// Id for the constant
|
|
uint32 fresh_id = 1;
|
|
|
|
// Type of the constant
|
|
uint32 type_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationAddConstantScalar {
|
|
|
|
// Adds a constant of the given scalar type.
|
|
// Also, creates an IdIsIrrelevant fact about
|
|
// |fresh_id| if |is_irrelevant| is true.
|
|
|
|
// Id for the constant
|
|
uint32 fresh_id = 1;
|
|
|
|
// Id for the scalar type of the constant
|
|
uint32 type_id = 2;
|
|
|
|
// Value of the constant
|
|
repeated uint32 word = 3;
|
|
|
|
// If the constant should be marked as irrelevant.
|
|
bool is_irrelevant = 4;
|
|
|
|
}
|
|
|
|
message TransformationAddCopyMemory {
|
|
|
|
// Adds an OpCopyMemory instruction into the module.
|
|
// Creates either a global or a local variable (based on
|
|
// |storage_class| field) to copy the target into.
|
|
|
|
// OpCopyMemory will be inserted before this instruction.
|
|
InstructionDescriptor instruction_descriptor = 1;
|
|
|
|
// Fresh id to copy memory into.
|
|
uint32 fresh_id = 2;
|
|
|
|
// Source to copy memory from.
|
|
uint32 source_id = 3;
|
|
|
|
// Storage class for the target variable. Can be either Function or Private.
|
|
uint32 storage_class = 4;
|
|
|
|
// Result id for the variable's initializer operand. Its type must be equal to
|
|
// variable's pointee type.
|
|
uint32 initializer_id = 5;
|
|
|
|
}
|
|
|
|
message TransformationAddDeadBlock {
|
|
|
|
// Adds a new block to the module that is statically reachable from an
|
|
// existing block, but dynamically unreachable.
|
|
|
|
// Fresh id for the dead block
|
|
uint32 fresh_id = 1;
|
|
|
|
// Id of an existing block terminated with OpBranch, such that this OpBranch
|
|
// can be replaced with an OpBranchConditional to its exiting successor or
|
|
// the dead block
|
|
uint32 existing_block = 2;
|
|
|
|
// Determines whether the condition associated with the OpBranchConditional
|
|
// is true or false
|
|
bool condition_value = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddDeadBreak {
|
|
|
|
// A transformation that turns a basic block that unconditionally branches to
|
|
// its successor into a block that potentially breaks out of a structured
|
|
// control flow construct, but in such a manner that the break cannot actually
|
|
// be taken.
|
|
|
|
// The block to break from
|
|
uint32 from_block = 1;
|
|
|
|
// The merge block to break to
|
|
uint32 to_block = 2;
|
|
|
|
// Determines whether the break condition is true or false
|
|
bool break_condition_value = 3;
|
|
|
|
// A sequence of ids suitable for extending OpPhi instructions as a result of
|
|
// the new break edge
|
|
repeated uint32 phi_id = 4;
|
|
|
|
}
|
|
|
|
message TransformationAddDeadContinue {
|
|
|
|
// A transformation that turns a basic block appearing in a loop and that
|
|
// unconditionally branches to its successor into a block that potentially
|
|
// branches to the continue target of the loop, but in such a manner that the
|
|
// continue branch cannot actually be taken.
|
|
|
|
// The block to continue from
|
|
uint32 from_block = 1;
|
|
|
|
// Determines whether the continue condition is true or false
|
|
bool continue_condition_value = 2;
|
|
|
|
// A sequence of ids suitable for extending OpPhi instructions as a result of
|
|
// the new break edge
|
|
repeated uint32 phi_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddEarlyTerminatorWrapper {
|
|
|
|
// Adds a function to the module containing a single block with a single non-
|
|
// label instruction that is either OpKill, OpUnreachable, or
|
|
// OpTerminateInvocation. The purpose of this is to allow such instructions
|
|
// to be subsequently replaced with wrapper functions, which can then enable
|
|
// transformations (such as inlining) that are hard in the direct presence
|
|
// of these instructions.
|
|
|
|
// Fresh id for the function.
|
|
uint32 function_fresh_id = 1;
|
|
|
|
// Fresh id for the single basic block in the function.
|
|
uint32 label_fresh_id = 2;
|
|
|
|
// One of OpKill, OpUnreachable, OpTerminateInvocation. If additional early
|
|
// termination instructions are added to SPIR-V they should also be handled
|
|
// here.
|
|
uint32 opcode = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddFunction {
|
|
|
|
// Adds a SPIR-V function to the module.
|
|
|
|
// The series of instructions that comprise the function.
|
|
repeated Instruction instruction = 1;
|
|
|
|
// True if and only if the given function should be made livesafe (see
|
|
// FactFunctionIsLivesafe for definition).
|
|
bool is_livesafe = 2;
|
|
|
|
// Fresh id for a new variable that will serve as a "loop limiter" for the
|
|
// function; only relevant if |is_livesafe| holds.
|
|
uint32 loop_limiter_variable_id = 3;
|
|
|
|
// Id of an existing unsigned integer constant providing the maximum value
|
|
// that the loop limiter can reach before the loop is broken from; only
|
|
// relevant if |is_livesafe| holds.
|
|
uint32 loop_limit_constant_id = 4;
|
|
|
|
// Fresh ids for each loop in the function that allow the loop limiter to be
|
|
// manipulated; only relevant if |is_livesafe| holds.
|
|
repeated LoopLimiterInfo loop_limiter_info = 5;
|
|
|
|
// Id of an existing global value with the same return type as the function
|
|
// that can be used to replace OpKill and OpReachable instructions with
|
|
// ReturnValue instructions. Ignored if the function has void return type.
|
|
// Only relevant if |is_livesafe| holds.
|
|
uint32 kill_unreachable_return_value_id = 6;
|
|
|
|
// A mapping (represented as a sequence) from every access chain result id in
|
|
// the function to the ids required to clamp its indices to ensure they are in
|
|
// bounds; only relevant if |is_livesafe| holds.
|
|
repeated AccessChainClampingInfo access_chain_clamping_info = 7;
|
|
|
|
}
|
|
|
|
message TransformationAddGlobalUndef {
|
|
|
|
// Adds an undefined value of a given type to the module at global scope.
|
|
|
|
// Fresh id for the undefined value
|
|
uint32 fresh_id = 1;
|
|
|
|
// The type of the undefined value
|
|
uint32 type_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationAddGlobalVariable {
|
|
|
|
// Adds a global variable of the given type to the module, with Private or
|
|
// Workgroup storage class, and optionally (for the Private case) with an
|
|
// initializer.
|
|
|
|
// Fresh id for the global variable
|
|
uint32 fresh_id = 1;
|
|
|
|
// The type of the global variable
|
|
uint32 type_id = 2;
|
|
|
|
uint32 storage_class = 3;
|
|
|
|
// Initial value of the variable
|
|
uint32 initializer_id = 4;
|
|
|
|
// True if and only if the behaviour of the module should not depend on the
|
|
// value of the variable, in which case stores to the variable can be
|
|
// performed in an arbitrary fashion.
|
|
bool value_is_irrelevant = 5;
|
|
|
|
}
|
|
|
|
message TransformationAddImageSampleUnusedComponents {
|
|
|
|
// A transformation that adds unused components to an image sample coordinate.
|
|
|
|
// An vector id with the original coordinate and the unused components.
|
|
uint32 coordinate_with_unused_components_id = 1;
|
|
|
|
// A descriptor for an image sample instruction.
|
|
InstructionDescriptor instruction_descriptor = 2;
|
|
|
|
}
|
|
|
|
message TransformationAddLocalVariable {
|
|
|
|
// Adds a local variable of the given type (which must be a pointer with
|
|
// Function storage class) to the given function, initialized to the given
|
|
// id.
|
|
|
|
// Fresh id for the local variable
|
|
uint32 fresh_id = 1;
|
|
|
|
// The type of the local variable
|
|
uint32 type_id = 2;
|
|
|
|
// The id of the function to which the local variable should be added
|
|
uint32 function_id = 3;
|
|
|
|
// Initial value of the variable
|
|
uint32 initializer_id = 4;
|
|
|
|
// True if and only if the behaviour of the module should not depend on the
|
|
// value of the variable, in which case stores to the variable can be
|
|
// performed in an arbitrary fashion.
|
|
bool value_is_irrelevant = 5;
|
|
|
|
}
|
|
|
|
message TransformationAddLoopPreheader {
|
|
|
|
// A transformation that adds a loop preheader block before the given loop header.
|
|
|
|
// The id of the loop header block
|
|
uint32 loop_header_block = 1;
|
|
|
|
// A fresh id for the preheader block
|
|
uint32 fresh_id = 2;
|
|
|
|
// Fresh ids for splitting the OpPhi instructions in the header.
|
|
// A new OpPhi instruction in the preheader is needed for each OpPhi instruction in the header,
|
|
// if the header has more than one predecessor outside of the loop.
|
|
// This allows turning instructions of the form:
|
|
//
|
|
// %loop_header_block = OpLabel
|
|
// %id1 = OpPhi %type %val1 %pred1_id %val2 %pred2_id %val3 %backedge_block_id
|
|
//
|
|
// into:
|
|
// %fresh_id = OpLabel
|
|
// %phi_id1 = OpPhi %type %val1 %pred1_id %val2 %pred2_id
|
|
// OpBranch %header_id
|
|
// %loop_header_block = OpLabel
|
|
// %id1 = OpPhi %type %phi_id1 %fresh_id %val3 %backedge_block_id
|
|
repeated uint32 phi_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddLoopToCreateIntConstantSynonym {
|
|
// A transformation that uses a loop to create a synonym for an integer
|
|
// constant C (scalar or vector) using an initial value I, a step value S and
|
|
// a number of iterations N such that C = I - N * S. For each iteration, S is
|
|
// subtracted from the total.
|
|
// The loop can be made up of one or two blocks, and it is inserted before a
|
|
// block with a single predecessor. In the one-block case, it is of the form:
|
|
//
|
|
// %loop_id = OpLabel
|
|
// %ctr_id = OpPhi %int %int_0 %pred %incremented_ctr_id %loop_id
|
|
// %temp_id = OpPhi %type_of_I %I %pred %eventual_syn_id %loop_id
|
|
// %eventual_syn_id = OpISub %type_of_I %temp_id %step_val_id
|
|
// %incremented_ctr_id = OpIAdd %int %ctr_id %int_1
|
|
// %cond_id = OpSLessThan %bool %incremented_ctr_id %num_iterations_id
|
|
// OpLoopMerge %block_after_loop_id %loop_id None
|
|
// OpBranchConditional %cond_id %loop_id %block_after_loop_id
|
|
//
|
|
// A new OpPhi instruction is then added to %block_after_loop_id, as follows:
|
|
//
|
|
// %block_after_loop_id = OpLabel
|
|
// %syn_id = OpPhi %type_of_I %eventual_syn_id %loop_id
|
|
//
|
|
// This can be translated, assuming that N > 0, to:
|
|
// int syn = I;
|
|
// for (int ctr = 0; ctr < N; ctr++) syn = syn - S;
|
|
//
|
|
// All existing OpPhi instructions in %block_after_loop_id are also updated
|
|
// to reflect the fact that its predecessor is now %loop_id.
|
|
|
|
// The following are existing ids.
|
|
|
|
// The id of the integer constant C that we want a synonym of.
|
|
uint32 constant_id = 1;
|
|
|
|
// The id of the initial value integer constant I.
|
|
uint32 initial_val_id = 2;
|
|
|
|
// The id of the step value integer constant S.
|
|
uint32 step_val_id = 3;
|
|
|
|
// The id of the integer scalar constant, its value being the number of
|
|
// iterations N.
|
|
uint32 num_iterations_id = 4;
|
|
|
|
// The label id of the block before which the loop must be inserted.
|
|
uint32 block_after_loop_id = 5;
|
|
|
|
|
|
// The following are fresh ids.
|
|
|
|
// A fresh id for the synonym.
|
|
uint32 syn_id = 6;
|
|
|
|
// A fresh id for the label of the loop,
|
|
uint32 loop_id = 7;
|
|
|
|
// A fresh id for the counter.
|
|
uint32 ctr_id = 8;
|
|
|
|
// A fresh id taking the value I - S * ctr at the ctr-th iteration.
|
|
uint32 temp_id = 9;
|
|
|
|
// A fresh id taking the value I - S * (ctr + 1) at the ctr-th iteration, and
|
|
// thus I - S * N at the last iteration.
|
|
uint32 eventual_syn_id = 10;
|
|
|
|
// A fresh id for the incremented counter.
|
|
uint32 incremented_ctr_id = 11;
|
|
|
|
// A fresh id for the loop condition.
|
|
uint32 cond_id = 12;
|
|
|
|
// The instructions in the loop can also be laid out in two basic blocks, as follows:
|
|
//
|
|
// %loop_id = OpLabel
|
|
// %ctr_id = OpPhi %int %int_0 %pred %incremented_ctr_id %loop_id
|
|
// %temp_id = OpPhi %type_of_I %I %pred %eventual_syn_id %loop_id
|
|
// OpLoopMerge %block_after_loop_id %additional_block_id None
|
|
// OpBranch %additional_block_id
|
|
//
|
|
// %additional_block_id = OpLabel
|
|
// %eventual_syn_id = OpISub %type_of_I %temp_id %step_val_id
|
|
// %incremented_ctr_id = OpIAdd %int %ctr_id %int_1
|
|
// %cond_id = OpSLessThan %bool %incremented_ctr_id %num_iterations_id
|
|
// OpBranchConditional %cond_id %loop_id %block_after_loop_id
|
|
|
|
// A fresh id for the additional block. If this is 0, it means that only one
|
|
// block is to be created.
|
|
uint32 additional_block_id = 13;
|
|
}
|
|
|
|
message TransformationAddNoContractionDecoration {
|
|
|
|
// Applies OpDecorate NoContraction to the given result id
|
|
|
|
// Result id to be decorated
|
|
uint32 result_id = 1;
|
|
|
|
}
|
|
|
|
message TransformationAddOpPhiSynonym {
|
|
|
|
// Adds an OpPhi instruction at the start of a block with n predecessors (pred_1, pred_2, ..., pred_n)
|
|
// and n related ids (id_1, id_2, ..., id_n) which are pairwise synonymous.
|
|
// The instruction will be of the form:
|
|
// %fresh_id = OpPhi %type %id_1 %pred_1 %id_2 %pred_2 ... %id_n %pred_n
|
|
// and fresh_id will be recorded as being synonymous with all the other ids.
|
|
|
|
// Label id of the block
|
|
uint32 block_id = 1;
|
|
|
|
// Pairs (pred_i, id_i)
|
|
repeated UInt32Pair pred_to_id = 2;
|
|
|
|
// Fresh id for the new instruction
|
|
uint32 fresh_id = 3;
|
|
}
|
|
|
|
message TransformationAddParameter {
|
|
|
|
// Adds a new parameter into the function.
|
|
|
|
// Result id of the function to add parameters to.
|
|
uint32 function_id = 1;
|
|
|
|
// Fresh id for a new parameter.
|
|
uint32 parameter_fresh_id = 2;
|
|
|
|
// Type id for a new parameter.
|
|
uint32 parameter_type_id = 3;
|
|
|
|
// A map that maps from the OpFunctionCall id to the id that will be passed as the new
|
|
// parameter at that call site. It must have the same type as that of the new parameter.
|
|
repeated UInt32Pair call_parameter_ids = 4;
|
|
|
|
// A fresh id for a new function type. This might not be used
|
|
// if a required function type already exists or if we can change
|
|
// the old function type.
|
|
uint32 function_type_fresh_id = 5;
|
|
|
|
}
|
|
|
|
message TransformationAddRelaxedDecoration {
|
|
|
|
// Applies OpDecorate RelaxedPrecision to the given result id
|
|
|
|
// Result id to be decorated
|
|
uint32 result_id = 1;
|
|
|
|
}
|
|
|
|
message TransformationAddSpecConstantOp {
|
|
|
|
// Adds OpSpecConstantOp into the module.
|
|
|
|
// Result id for the new instruction.
|
|
uint32 fresh_id = 1;
|
|
|
|
// Type id for the new instruction.
|
|
uint32 type_id = 2;
|
|
|
|
// Opcode operand of the OpSpecConstantOp instruction.
|
|
uint32 opcode = 3;
|
|
|
|
// Operands of the |opcode| instruction.
|
|
repeated InstructionOperand operand = 4;
|
|
|
|
}
|
|
|
|
message TransformationAddSynonym {
|
|
|
|
// Adds a |synonymous_instruction| before |insert_before| instruction with
|
|
// and creates a fact that |result_id| and the result id of |synonymous_instruction|
|
|
// are synonymous.
|
|
|
|
// Result id of the first synonym.
|
|
uint32 result_id = 1;
|
|
|
|
// Type of the synonym to apply. Some types might produce instructions
|
|
// with commutative operands. Such types do not specify the order of the
|
|
// operands since we have a special transformation to swap commutable operands.
|
|
//
|
|
// TODO(https://github.com/KhronosGroup/SPIRV-Tools/issues/3499):
|
|
// Consider adding more types here.
|
|
enum SynonymType {
|
|
// New synonym is derived by adding zero to the |result_id|.
|
|
ADD_ZERO = 0;
|
|
|
|
// New synonym is derived by subtracting zero from the |result_id|.
|
|
SUB_ZERO = 1;
|
|
|
|
// New synonym is derived by multiplying |result_id| by one.
|
|
MUL_ONE = 2;
|
|
|
|
// New synonym is derived by applying OpCopyObject instruction to |result_id|.
|
|
COPY_OBJECT = 3;
|
|
|
|
// New synonym is derived by applying OpLogicalOr to |result_id| with the second
|
|
// operand being 'false'.
|
|
LOGICAL_OR = 4;
|
|
|
|
// New synonym is derived by applying OpLogicalAnd to |result_id| with the second
|
|
// operand being 'true'.
|
|
LOGICAL_AND = 5;
|
|
|
|
// New synonym is derived by applying OpBitwiseOr to |result_id| with the second
|
|
// operand being 0 taken with the same bit length as |result_id|
|
|
BITWISE_OR = 6;
|
|
|
|
// New synonym is derived by applying OpBitwiseXor to |result_id| with the second
|
|
// operand being 0 taken with the same bit length as |result_id|
|
|
BITWISE_XOR = 7;
|
|
}
|
|
|
|
// Type of the synonym to create. See SynonymType for more details.
|
|
SynonymType synonym_type = 2;
|
|
|
|
// Fresh result id for a created synonym.
|
|
uint32 synonym_fresh_id = 3;
|
|
|
|
// An instruction to insert a new synonym before.
|
|
InstructionDescriptor insert_before = 4;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeArray {
|
|
|
|
// Adds an array type of the given element type and size to the module
|
|
|
|
// Fresh id for the array type
|
|
uint32 fresh_id = 1;
|
|
|
|
// The array's element type
|
|
uint32 element_type_id = 2;
|
|
|
|
// The array's size
|
|
uint32 size_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeBoolean {
|
|
|
|
// Adds OpTypeBool to the module
|
|
|
|
// Id to be used for the type
|
|
uint32 fresh_id = 1;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeFloat {
|
|
|
|
// Adds OpTypeFloat to the module with the given width
|
|
|
|
// Id to be used for the type
|
|
uint32 fresh_id = 1;
|
|
|
|
// Floating-point width
|
|
uint32 width = 2;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeFunction {
|
|
|
|
// Adds a function type to the module
|
|
|
|
// Fresh id for the function type
|
|
uint32 fresh_id = 1;
|
|
|
|
// The function's return type
|
|
uint32 return_type_id = 2;
|
|
|
|
// The function's argument types
|
|
repeated uint32 argument_type_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeInt {
|
|
|
|
// Adds OpTypeInt to the module with the given width and signedness
|
|
|
|
// Id to be used for the type
|
|
uint32 fresh_id = 1;
|
|
|
|
// Integer width
|
|
uint32 width = 2;
|
|
|
|
// True if and only if this is a signed type
|
|
bool is_signed = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeMatrix {
|
|
|
|
// Adds a matrix type to the module
|
|
|
|
// Fresh id for the matrix type
|
|
uint32 fresh_id = 1;
|
|
|
|
// The matrix's column type, which must be a floating-point vector (as per
|
|
// the "data rules" in the SPIR-V specification).
|
|
uint32 column_type_id = 2;
|
|
|
|
// The matrix's column count
|
|
uint32 column_count = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypePointer {
|
|
|
|
// Adds OpTypePointer to the module, with the given storage class and base
|
|
// type
|
|
|
|
// Id to be used for the type
|
|
uint32 fresh_id = 1;
|
|
|
|
// Pointer storage class
|
|
uint32 storage_class = 2;
|
|
|
|
// Id of the base type for the pointer
|
|
uint32 base_type_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeStruct {
|
|
|
|
// Adds a struct type to the module
|
|
|
|
// Fresh id for the struct type
|
|
uint32 fresh_id = 1;
|
|
|
|
// The struct's member types
|
|
repeated uint32 member_type_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationAddTypeVector {
|
|
|
|
// Adds a vector type to the module
|
|
|
|
// Fresh id for the vector type
|
|
uint32 fresh_id = 1;
|
|
|
|
// The vector's component type
|
|
uint32 component_type_id = 2;
|
|
|
|
// The vector's component count
|
|
uint32 component_count = 3;
|
|
|
|
}
|
|
|
|
message TransformationAdjustBranchWeights {
|
|
|
|
// A transformation that adjusts the branch weights
|
|
// of a branch conditional instruction.
|
|
|
|
// A descriptor for a branch conditional instruction.
|
|
InstructionDescriptor instruction_descriptor = 1;
|
|
|
|
// Branch weights of a branch conditional instruction.
|
|
UInt32Pair branch_weights = 2;
|
|
|
|
}
|
|
|
|
message TransformationCompositeConstruct {
|
|
|
|
// A transformation that introduces an OpCompositeConstruct instruction to
|
|
// make a composite object.
|
|
|
|
// Id of the type of the composite that is to be constructed
|
|
uint32 composite_type_id = 1;
|
|
|
|
// Ids of the objects that will form the components of the composite
|
|
repeated uint32 component = 2;
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// OpCompositeConstruct instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 3;
|
|
|
|
// A fresh id for the composite object
|
|
uint32 fresh_id = 4;
|
|
|
|
}
|
|
|
|
message TransformationCompositeExtract {
|
|
|
|
// A transformation that adds an instruction to extract an element from a
|
|
// composite.
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// OpCompositeExtract instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 1;
|
|
|
|
// Result id for the extract operation.
|
|
uint32 fresh_id = 2;
|
|
|
|
// Id of the composite from which data is to be extracted.
|
|
uint32 composite_id = 3;
|
|
|
|
// Indices that indicate which part of the composite should be extracted.
|
|
repeated uint32 index = 4;
|
|
|
|
}
|
|
|
|
message TransformationCompositeInsert {
|
|
|
|
// A transformation that adds an instruction OpCompositeInsert which creates
|
|
// a new composite from an existing composite, with an element inserted.
|
|
|
|
// A descriptor for an instruction before which the new instruction
|
|
// OpCompositeInsert should be inserted.
|
|
InstructionDescriptor instruction_to_insert_before = 1;
|
|
|
|
// Result id of the inserted OpCompositeInsert instruction.
|
|
uint32 fresh_id = 2;
|
|
|
|
// Id of the composite used as the basis for the insertion.
|
|
uint32 composite_id = 3;
|
|
|
|
// Id of the object to be inserted.
|
|
uint32 object_id = 4;
|
|
|
|
// Indices that indicate which part of the composite should be inserted into.
|
|
repeated uint32 index = 5;
|
|
|
|
}
|
|
|
|
message TransformationComputeDataSynonymFactClosure {
|
|
|
|
// A transformation that impacts the fact manager only, forcing a computation
|
|
// of the closure of data synonym facts, so that e.g. if the components of
|
|
// vectors v and w are known to be pairwise synonymous, it is deduced that v
|
|
// and w are themselves synonymous.
|
|
|
|
// When searching equivalence classes for implied facts, equivalence classes
|
|
// larger than this size will be skipped.
|
|
uint32 maximum_equivalence_class_size = 1;
|
|
|
|
}
|
|
|
|
message TransformationDuplicateRegionWithSelection {
|
|
|
|
// A transformation that inserts a conditional statement with a boolean expression
|
|
// of arbitrary value and duplicates a given single-entry, single-exit region, so
|
|
// that it is present in each conditional branch and will be executed regardless
|
|
// of which branch will be taken.
|
|
|
|
// Fresh id for a label of the new entry block.
|
|
uint32 new_entry_fresh_id = 1;
|
|
|
|
// Id for a boolean expression.
|
|
uint32 condition_id = 2;
|
|
|
|
// Fresh id for a label of the merge block of the conditional.
|
|
uint32 merge_label_fresh_id = 3;
|
|
|
|
// Block id of the entry block of the original region.
|
|
uint32 entry_block_id = 4;
|
|
|
|
// Block id of the exit block of the original region.
|
|
uint32 exit_block_id = 5;
|
|
|
|
// Map that maps from a label in the original region to the corresponding label
|
|
// in the duplicated region.
|
|
repeated UInt32Pair original_label_to_duplicate_label = 6;
|
|
|
|
// Map that maps from a result id in the original region to the corresponding
|
|
// result id in the duplicated region.
|
|
repeated UInt32Pair original_id_to_duplicate_id = 7;
|
|
|
|
// Map that maps from a result id in the original region to the result id of the
|
|
// corresponding OpPhi instruction.
|
|
repeated UInt32Pair original_id_to_phi_id = 8;
|
|
}
|
|
|
|
message TransformationEquationInstruction {
|
|
|
|
// A transformation that adds an instruction to the module that defines an
|
|
// equation between its result id and input operand ids, such that the
|
|
// equation is guaranteed to hold at any program point where all ids involved
|
|
// are available (i.e. at any program point dominated by the instruction).
|
|
|
|
// The result id of the new instruction
|
|
uint32 fresh_id = 1;
|
|
|
|
// The instruction's opcode
|
|
uint32 opcode = 2;
|
|
|
|
// The input operands to the instruction
|
|
repeated uint32 in_operand_id = 3;
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 4;
|
|
|
|
}
|
|
|
|
message TransformationExpandVectorReduction {
|
|
|
|
// A transformation that adds synonyms for OpAny and OpAll instructions by
|
|
// evaluating each vector component with the corresponding logical operation.
|
|
// There is a SPIR-V code example in the header file of the transformation
|
|
// class that can help understand the transformation.
|
|
|
|
// The OpAny or OpAll instruction result id.
|
|
uint32 instruction_result_id = 1;
|
|
|
|
// The fresh ids required to apply the transformation.
|
|
repeated uint32 fresh_ids = 2;
|
|
|
|
}
|
|
|
|
message TransformationFlattenConditionalBranch {
|
|
|
|
// A transformation that takes a selection construct with a header
|
|
// containing an OpBranchConditional instruction and flattens it.
|
|
// For example, something of the form:
|
|
//
|
|
// %1 = OpLabel
|
|
// [header instructions]
|
|
// OpSelectionMerge %4 None
|
|
// OpBranchConditional %cond %2 %3
|
|
// %2 = OpLabel
|
|
// [true branch instructions]
|
|
// OpBranch %4
|
|
// %3 = OpLabel
|
|
// [false branch instructions]
|
|
// OpBranch %4
|
|
// %4 = OpLabel
|
|
// ...
|
|
//
|
|
// becomes:
|
|
//
|
|
// %1 = OpLabel
|
|
// [header instructions]
|
|
// OpBranch %2
|
|
// %2 = OpLabel
|
|
// [true branch instructions]
|
|
// OpBranch %3
|
|
// %3 = OpLabel
|
|
// [false branch instructions]
|
|
// OpBranch %4
|
|
// %4 = OpLabel
|
|
// ...
|
|
//
|
|
// If all of the instructions in the true or false branches have
|
|
// no side effects, this is semantics-preserving.
|
|
// Side-effecting instructions will instead be enclosed by smaller
|
|
// conditionals. For more details, look at the definition for the
|
|
// SideEffectWrapperInfo message.
|
|
//
|
|
// Nested conditionals or loops are not supported. The false branch
|
|
// could also be executed before the true branch, depending on the
|
|
// |true_branch_first| field.
|
|
|
|
// The label id of the header block
|
|
uint32 header_block_id = 1;
|
|
|
|
// A boolean field deciding the order in which the original branches
|
|
// will be laid out: the true branch will be laid out first iff this
|
|
// field is true.
|
|
bool true_branch_first = 2;
|
|
|
|
// If the convergence block contains an OpPhi with bvec2 result type, it may
|
|
// be necessary to introduce a bvec2 with the selection construct's condition
|
|
// in both components in order to turn the OpPhi into an OpSelect. This
|
|
// this field provides a fresh id for an OpCompositeConstruct instruction for
|
|
// this purpose. It should be set to 0 if no such instruction is required.
|
|
uint32 fresh_id_for_bvec2_selector = 3;
|
|
|
|
// The same as |fresh_id_for_bvec2_selector| but for the bvec3 case.
|
|
uint32 fresh_id_for_bvec3_selector = 4;
|
|
|
|
// The same as |fresh_id_for_bvec2_selector| but for the bvec4 case.
|
|
uint32 fresh_id_for_bvec4_selector = 5;
|
|
|
|
// A list of instructions with side effects, which must be enclosed
|
|
// inside smaller conditionals before flattening the main one, and
|
|
// the corresponding fresh ids and module ids needed.
|
|
repeated SideEffectWrapperInfo side_effect_wrapper_info = 6;
|
|
}
|
|
|
|
message TransformationFunctionCall {
|
|
|
|
// A transformation that introduces an OpFunctionCall instruction. The call
|
|
// must not make the module's call graph cyclic. Beyond that, if the call
|
|
// is in a dead block it can be to any function with arbitrary suitably-typed
|
|
// arguments; otherwise it must be to a livesafe function, with injected
|
|
// variables as pointer arguments and arbitrary non-pointer arguments.
|
|
|
|
// A fresh id for the result of the call
|
|
uint32 fresh_id = 1;
|
|
|
|
// Id of the function to be called
|
|
uint32 callee_id = 2;
|
|
|
|
// Ids for arguments to the function
|
|
repeated uint32 argument_id = 3;
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// OpFunctionCall instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 4;
|
|
|
|
}
|
|
|
|
message TransformationInlineFunction {
|
|
|
|
// This transformation inlines a function by mapping the function instructions to fresh ids.
|
|
|
|
// Result id of the function call instruction.
|
|
uint32 function_call_id = 1;
|
|
|
|
// For each result id defined by the called function,
|
|
// this map provides an associated fresh id that can
|
|
// be used in the inlined version of the function call.
|
|
repeated UInt32Pair result_id_map = 2;
|
|
|
|
}
|
|
|
|
message TransformationInvertComparisonOperator {
|
|
|
|
// For some instruction with result id |operator_id| that
|
|
// represents a binary comparison operator (e.g. <, >, <=), this transformation
|
|
// will replace that instruction's result id with |fresh_id|,
|
|
// invert the opcode (< will become >=) and insert OpLogicalNot
|
|
// instruction with result id |operator_id| below.
|
|
|
|
// Result id of the instruction to invert.
|
|
uint32 operator_id = 1;
|
|
|
|
// Fresh id that will be used by the operator after the inversion.
|
|
uint32 fresh_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationLoad {
|
|
|
|
// Transformation that adds an OpLoad or OpAtomicLoad instruction from a pointer into an id.
|
|
|
|
// The result of the load instruction.
|
|
uint32 fresh_id = 1;
|
|
|
|
// The pointer to be loaded from.
|
|
uint32 pointer_id = 2;
|
|
|
|
// True if and only if the load should be atomic.
|
|
bool is_atomic = 3;
|
|
|
|
// The memory scope for the atomic load. Ignored unless |is_atomic| is true.
|
|
uint32 memory_scope_id = 4;
|
|
|
|
// The memory semantics for the atomic load. Ignored unless |is_atomic| is true.
|
|
uint32 memory_semantics_id = 5;
|
|
|
|
// A descriptor for an instruction in a block before which the new OpLoad
|
|
// instruction should be inserted.
|
|
InstructionDescriptor instruction_to_insert_before = 6;
|
|
|
|
}
|
|
|
|
message TransformationMakeVectorOperationDynamic {
|
|
|
|
// A transformation that replaces the OpCompositeExtract and OpCompositeInsert
|
|
// instructions with the OpVectorExtractDynamic and OpVectorInsertDynamic instructions.
|
|
|
|
// The composite instruction result id.
|
|
uint32 instruction_result_id = 1;
|
|
|
|
// The OpCompositeExtract/Insert instructions accept integer literals as indices to the composite object.
|
|
// However, the OpVectorInsert/ExtractDynamic instructions require its single index to be an integer instruction.
|
|
// This is the result id of the integer instruction.
|
|
uint32 constant_index_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationMergeBlocks {
|
|
|
|
// A transformation that merges a block with its predecessor.
|
|
|
|
// The id of the block that is to be merged with its predecessor; the merged
|
|
// block will have the *predecessor's* id.
|
|
uint32 block_id = 1;
|
|
|
|
}
|
|
|
|
message TransformationMergeFunctionReturns {
|
|
|
|
// A transformation that modifies a function so that it does not return early,
|
|
// so it only has one return statement (ignoring unreachable blocks).
|
|
//
|
|
// The function is enclosed inside an outer loop, that is only executed once,
|
|
// and whose merge block is the new return block of the function.
|
|
//
|
|
// Each return instruction is replaced by:
|
|
// OpBranch %innermost_loop_merge
|
|
// where %innermost_loop_merge is the innermost loop containing the return
|
|
// instruction.
|
|
//
|
|
// Each merge block whose associated loop contains return instructions is
|
|
// changed so that it branches to the merge block of the loop containing it,
|
|
// as explained in the comments to the ReturnMergingInfo message.
|
|
//
|
|
// The new return block (the merge block of the new outer loop) will be of
|
|
// the following form (if the return type is not void):
|
|
// %outer_return_id = OpLabel
|
|
// %return_val_id = OpPhi %return_type %val1 %block_1 %val2 %block_2 ...
|
|
// OpReturnValue %return_val_id
|
|
// where %block_k is either a return block that, in the original function, is
|
|
// outside of any loops, or the merge block of a loop that contains return
|
|
// instructions and is not, originally, nested inside another loop, and
|
|
// %block_k is the corresponding return value.
|
|
// If the function has void type, there will be no OpPhi instruction and the
|
|
// last instruction will be OpReturn.
|
|
|
|
// The id of the function to which the transformation is being applied.
|
|
uint32 function_id = 1;
|
|
|
|
// A fresh id for the header of the new outer loop.
|
|
uint32 outer_header_id = 2;
|
|
|
|
// A fresh id for an unreachable continue construct for the new outer loop.
|
|
uint32 unreachable_continue_id = 7;
|
|
|
|
// A fresh id for the new return block of the function,
|
|
// i.e. the merge block of the new outer loop.
|
|
uint32 outer_return_id = 3;
|
|
|
|
// A fresh id for the value that will be returned.
|
|
// This is ignored if the function has void return type.
|
|
uint32 return_val_id = 4;
|
|
|
|
// An existing id of the same type as the return value, which is
|
|
// available to use at the end of the entry block.
|
|
// This is ignored if the function has void return type or if no
|
|
// loops in the function contain a return instruction.
|
|
// If the function is not void, the transformation will add an
|
|
// OpPhi instruction to each merge block whose associated loop
|
|
// contains at least a return instruction. The value associated
|
|
// with existing predecessors from which the function cannot be
|
|
// returning will be this id, used as a placeholder.
|
|
uint32 any_returnable_val_id = 5;
|
|
|
|
// The information needed to modify the merge blocks of
|
|
// loops containing return instructions.
|
|
repeated ReturnMergingInfo return_merging_info = 6;
|
|
}
|
|
|
|
message TransformationMoveBlockDown {
|
|
|
|
// A transformation that moves a basic block to be one position lower in
|
|
// program order.
|
|
|
|
// The id of the block to move down.
|
|
uint32 block_id = 1;
|
|
}
|
|
|
|
message TransformationMoveInstructionDown {
|
|
|
|
// Swaps |instruction| with the next instruction in the block.
|
|
|
|
// The instruction to move down.
|
|
InstructionDescriptor instruction = 1;
|
|
|
|
}
|
|
|
|
message TransformationMutatePointer {
|
|
|
|
// Backs up value of the pointer, writes into the pointer and
|
|
// restores the original value.
|
|
|
|
// Result id of the pointer instruction to mutate.
|
|
uint32 pointer_id = 1;
|
|
|
|
// Fresh id for the OpLoad instruction.
|
|
uint32 fresh_id = 2;
|
|
|
|
// Instruction to insert backup, mutation and restoration code before.
|
|
InstructionDescriptor insert_before = 3;
|
|
|
|
}
|
|
|
|
message TransformationOutlineFunction {
|
|
|
|
// A transformation that outlines a single-entry single-exit region of a
|
|
// control flow graph into a separate function, and replaces the region with
|
|
// a call to that function.
|
|
|
|
// Id of the entry block of the single-entry single-exit region to be outlined
|
|
uint32 entry_block = 1;
|
|
|
|
// Id of the exit block of the single-entry single-exit region to be outlined
|
|
uint32 exit_block = 2;
|
|
|
|
// Id of a struct that will store the return values of the new function
|
|
uint32 new_function_struct_return_type_id = 3;
|
|
|
|
// A fresh id for the type of the outlined function
|
|
uint32 new_function_type_id = 4;
|
|
|
|
// A fresh id for the outlined function itself
|
|
uint32 new_function_id = 5;
|
|
|
|
// A fresh id to represent the block in the outlined function that represents
|
|
// the first block of the outlined region.
|
|
uint32 new_function_region_entry_block = 6;
|
|
|
|
// A fresh id for the result of the OpFunctionCall instruction that will call
|
|
// the outlined function
|
|
uint32 new_caller_result_id = 7;
|
|
|
|
// A fresh id to capture the return value of the outlined function - the
|
|
// argument to OpReturn
|
|
uint32 new_callee_result_id = 8;
|
|
|
|
// Ids defined outside the region and used inside the region will become
|
|
// parameters to the outlined function. This is a mapping from used ids to
|
|
// fresh parameter ids.
|
|
repeated UInt32Pair input_id_to_fresh_id = 9;
|
|
|
|
// Ids defined inside the region and used outside the region will become
|
|
// fresh ids defined by the outlined function, which get copied into the
|
|
// function's struct return value and then copied into their destination ids
|
|
// by the caller. This is a mapping from original ids to corresponding fresh
|
|
// ids.
|
|
repeated UInt32Pair output_id_to_fresh_id = 10;
|
|
|
|
}
|
|
|
|
message TransformationPermuteFunctionParameters {
|
|
|
|
// A transformation that, given a non-entry-point function taking n
|
|
// parameters and a permutation of the set [0, n-1]:
|
|
// - Introduces a new function type that is the same as the original
|
|
// function's type but with the order of arguments permuted
|
|
// (only if it doesn't already exist)
|
|
// - Changes the type of the function to this type
|
|
// - Adjusts all calls to the function so that their arguments are permuted
|
|
|
|
// Function, whose parameters will be permuted
|
|
uint32 function_id = 1;
|
|
|
|
// Fresh id for a new type of the function. This might not be used
|
|
// if a required function type already exists or if we can change
|
|
// the old function type.
|
|
uint32 function_type_fresh_id = 2;
|
|
|
|
// An array of size |n|, where |n| is a number of arguments to a function
|
|
// with |function_id|. For each i: 0 <= permutation[i] < n.
|
|
//
|
|
// i-th element of this array contains a position for an i-th
|
|
// function's argument (i.e. i-th argument will be permutation[i]-th
|
|
// after running this transformation)
|
|
repeated uint32 permutation = 3;
|
|
|
|
}
|
|
|
|
message TransformationPermutePhiOperands {
|
|
|
|
// Permutes operands of some OpPhi instruction.
|
|
|
|
// Result id of the instruction to apply the transformation to.
|
|
uint32 result_id = 1;
|
|
|
|
// A sequence of numbers in the range [0, n/2 - 1] where |n| is the number
|
|
// of operands of the OpPhi instruction with |result_id|.
|
|
repeated uint32 permutation = 2;
|
|
|
|
}
|
|
|
|
message TransformationPropagateInstructionDown {
|
|
|
|
// Propagates an instruction from |block_id| into its successors.
|
|
// Concretely, the transformation clones the propagated instruction
|
|
// into some of the successors of |block_id| and removes the original
|
|
// instruction. Additionally, an OpPhi instruction may be added to make sure
|
|
// that the transformation can be applied in various scenarios.
|
|
//
|
|
// Note that the instruction might not be propagated down into every successor
|
|
// of |block_id| since it might make the module invalid.
|
|
|
|
// Id of the block to propagate an instruction from. The decision on what
|
|
// instruction to propagate is made based on whether the instruction interacts
|
|
// with memory, whether that instruction is used in its block etc (see the
|
|
// transformation class for more details).
|
|
uint32 block_id = 1;
|
|
|
|
// A fresh id for an OpPhi instruction. This might not be used by the
|
|
// transformation since an OpPhi instruction is created only if needed
|
|
// (e.g. an instruction is propagated into divergent blocks).
|
|
uint32 phi_fresh_id = 2;
|
|
|
|
// A map from the id of some successor of the |block_id| to the fresh id.
|
|
// The map contains a fresh id for at least every successor of the |block_id|.
|
|
// Every fresh id in the map corresponds to the result id of the clone,
|
|
// propagated into the corresponding successor block. This transformation
|
|
// might use overflow ids if they are available and this field doesn't account
|
|
// for every successor of |block_id|.
|
|
repeated UInt32Pair successor_id_to_fresh_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationPropagateInstructionUp {
|
|
|
|
// Propagates an instruction in the block into the block's predecessors.
|
|
// Concretely, this transformation clones some particular instruction from
|
|
// the |block_id| into every block's predecessor and replaces the original
|
|
// instruction with OpPhi. Take a look at the transformation class to learn
|
|
// more about how we choose what instruction to propagate.
|
|
|
|
// Id of the block to propagate an instruction from.
|
|
uint32 block_id = 1;
|
|
|
|
// A map from the id of some predecessor of the |block_id| to the fresh id.
|
|
// The map contains a fresh id for at least every predecessor of the |block_id|.
|
|
// The instruction is propagated by creating a number of clones - one clone for
|
|
// each predecessor. Fresh ids from this field are used as result ids of cloned
|
|
// instructions.
|
|
repeated UInt32Pair predecessor_id_to_fresh_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationPushIdThroughVariable {
|
|
|
|
// A transformation that makes |value_synonym_id| and |value_id| to be
|
|
// synonymous by storing |value_id| into |variable_id| and
|
|
// loading |variable_id| to |value_synonym_id|.
|
|
|
|
// The value to be stored.
|
|
uint32 value_id = 1;
|
|
|
|
// A fresh id for the result of the load instruction.
|
|
uint32 value_synonym_id = 2;
|
|
|
|
// A fresh id for the variable to be stored to.
|
|
uint32 variable_id = 3;
|
|
|
|
// Constant to initialize the variable from.
|
|
uint32 initializer_id = 4;
|
|
|
|
// The variable storage class (global or local).
|
|
uint32 variable_storage_class = 5;
|
|
|
|
// A descriptor for an instruction which the new OpStore
|
|
// and OpLoad instructions might be inserted before.
|
|
InstructionDescriptor instruction_descriptor = 6;
|
|
|
|
}
|
|
|
|
message TransformationRecordSynonymousConstants {
|
|
|
|
// A transformation that, given the IDs to two synonymous constants,
|
|
// records the fact that they are synonymous. The module is not changed.
|
|
// Two constants are synonymous if:
|
|
// - they have the same type (ignoring the presence of integer sign)
|
|
// - they have the same opcode (one of OpConstant, OpConstantTrue,
|
|
// OpConstantFalse, OpConstantNull)
|
|
// - they have the same value
|
|
// If the types are the same, OpConstantNull is equivalent to
|
|
// OpConstantFalse or OpConstant with value zero.
|
|
|
|
// The id of a constant
|
|
uint32 constant1_id = 1;
|
|
|
|
// The id of the synonym
|
|
uint32 constant2_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationReplaceAddSubMulWithCarryingExtended {
|
|
|
|
// Replaces OpIAdd with OpIAddCarry, OpISub with OpISubBorrow, OpIMul
|
|
// with OpUMulExtended or OpSMulExtended (depending on the signedness
|
|
// of the operands) and stores the result into a |struct_fresh_id|.
|
|
// In the original instruction the result type id and the type ids of
|
|
// the operands must be the same. Then the transformation extracts
|
|
// the first element of the result into the original |result_id|.
|
|
// This value is the same as the result of the original instruction.
|
|
|
|
// The fresh id of the intermediate result.
|
|
uint32 struct_fresh_id = 1;
|
|
|
|
// The result id of the original instruction.
|
|
uint32 result_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationReplaceBranchFromDeadBlockWithExit {
|
|
|
|
// Given a dead block that ends with OpBranch, replaces OpBranch with an
|
|
// "exit" instruction; one of OpReturn/OpReturnValue, OpKill (in a fragment
|
|
// shader) or OpUnreachable.
|
|
|
|
// The dead block whose terminator is to be replaced.
|
|
uint32 block_id = 1;
|
|
|
|
// The opcode of the new terminator.
|
|
uint32 opcode = 2;
|
|
|
|
// Ignored unless opcode is OpReturnValue, in which case this field provides
|
|
// a suitable result id to be returned.
|
|
uint32 return_value_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationReplaceParameterWithGlobal {
|
|
|
|
// Removes parameter with result id |parameter_id| from its function
|
|
// and creates a global variable to pass its value to the function instead.
|
|
|
|
// Fresh id for a new function type. This might not be used if a required
|
|
// function type already exists or if we can change the old function type.
|
|
uint32 function_type_fresh_id = 2;
|
|
|
|
// Result id of the OpFunctionParameter instruction to remove.
|
|
uint32 parameter_id = 3;
|
|
|
|
// Fresh id of a global variable used to pass parameter's value to the function.
|
|
uint32 global_variable_fresh_id = 4;
|
|
|
|
}
|
|
|
|
message TransformationReplaceBooleanConstantWithConstantBinary {
|
|
|
|
// A transformation to capture replacing a use of a boolean constant with
|
|
// binary operation on two constant values
|
|
|
|
// A descriptor for the boolean constant id we would like to replace
|
|
IdUseDescriptor id_use_descriptor = 1;
|
|
|
|
// Id for the constant to be used on the LHS of the comparison
|
|
uint32 lhs_id = 2;
|
|
|
|
// Id for the constant to be used on the RHS of the comparison
|
|
uint32 rhs_id = 3;
|
|
|
|
// Opcode for binary operator
|
|
uint32 opcode = 4;
|
|
|
|
// Id that will store the result of the binary operation instruction
|
|
uint32 fresh_id_for_binary_operation = 5;
|
|
|
|
}
|
|
|
|
message TransformationReplaceConstantWithUniform {
|
|
|
|
// Replaces a use of a constant id with the result of a load from an
|
|
// element of uniform buffer known to hold the same value as the constant
|
|
|
|
// A descriptor for the id we would like to replace
|
|
IdUseDescriptor id_use_descriptor = 1;
|
|
|
|
// Uniform descriptor to identify which uniform value to choose
|
|
UniformBufferElementDescriptor uniform_descriptor = 2;
|
|
|
|
// Id that will store the result of an access chain
|
|
uint32 fresh_id_for_access_chain = 3;
|
|
|
|
// Id that will store the result of a load
|
|
uint32 fresh_id_for_load = 4;
|
|
|
|
}
|
|
|
|
message TransformationReplaceCopyMemoryWithLoadStore {
|
|
|
|
// A transformation that replaces instructions OpCopyMemory with loading
|
|
// the source variable to an intermediate value and storing this value into the
|
|
// target variable of the original OpCopyMemory instruction.
|
|
|
|
// The intermediate value.
|
|
uint32 fresh_id = 1;
|
|
|
|
// The instruction descriptor to OpCopyMemory. It is necessary, because
|
|
// OpCopyMemory doesn't have a result id.
|
|
InstructionDescriptor copy_memory_instruction_descriptor = 2;
|
|
}
|
|
|
|
message TransformationReplaceCopyObjectWithStoreLoad {
|
|
|
|
// A transformation that replaces instruction OpCopyObject with
|
|
// storing into a new variable and immediately loading from this
|
|
// variable to |result_id| of the original OpCopyObject instruction.
|
|
|
|
// The result id of initial OpCopyObject instruction
|
|
uint32 copy_object_result_id = 1;
|
|
|
|
// A fresh id for the variable to be stored to.
|
|
uint32 fresh_variable_id = 2;
|
|
|
|
// The variable storage class (Function or Private).
|
|
uint32 variable_storage_class = 3;
|
|
|
|
// Constant to initialize the variable with.
|
|
uint32 variable_initializer_id = 4;
|
|
}
|
|
|
|
message TransformationReplaceIdWithSynonym {
|
|
|
|
// Replaces a use of an id with an id that is known to be synonymous, e.g.
|
|
// because it was obtained via applying OpCopyObject
|
|
|
|
// The id use that is to be replaced
|
|
IdUseDescriptor id_use_descriptor = 1;
|
|
|
|
// The synonymous id
|
|
uint32 synonymous_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationReplaceIrrelevantId {
|
|
|
|
// Replaces an irrelevant id with another id of the same type.
|
|
|
|
// The id use that is to be replaced
|
|
IdUseDescriptor id_use_descriptor = 1;
|
|
|
|
// The replacement id
|
|
uint32 replacement_id = 2;
|
|
}
|
|
|
|
message TransformationReplaceLinearAlgebraInstruction {
|
|
|
|
// Replaces a linear algebra instruction with its
|
|
// mathematical definition.
|
|
|
|
// The fresh ids needed to apply the transformation.
|
|
repeated uint32 fresh_ids = 1;
|
|
|
|
// A descriptor for a linear algebra instruction.
|
|
InstructionDescriptor instruction_descriptor = 2;
|
|
|
|
}
|
|
|
|
message TransformationReplaceLoadStoreWithCopyMemory {
|
|
// A transformation that takes a pair of instruction descriptors
|
|
// to OpLoad and OpStore that have the same intermediate value
|
|
// and replaces the OpStore with an equivalent OpCopyMemory.
|
|
|
|
// The instruction descriptor to OpLoad
|
|
InstructionDescriptor load_instruction_descriptor = 1;
|
|
|
|
// The instruction descriptor to OpStore
|
|
InstructionDescriptor store_instruction_descriptor = 2;
|
|
}
|
|
|
|
message TransformationReplaceOpPhiIdFromDeadPredecessor {
|
|
|
|
// Replaces one of the ids used by an OpPhi instruction, when
|
|
// the corresponding predecessor is dead, with any available id
|
|
// of the correct type.
|
|
|
|
// The result id of the OpPhi instruction.
|
|
uint32 opphi_id = 1;
|
|
|
|
// The label id of one of the predecessors of the block containing
|
|
// the OpPhi instruction, corresponding to the id that we want to
|
|
// replace.
|
|
uint32 pred_label_id = 2;
|
|
|
|
// The id that, after the transformation, will be associated with
|
|
// the given predecessor.
|
|
uint32 replacement_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationReplaceOpSelectWithConditionalBranch {
|
|
|
|
// A transformation that takes an OpSelect instruction with a
|
|
// scalar boolean condition and replaces it with a conditional
|
|
// branch and an OpPhi instruction.
|
|
// The OpSelect instruction must be the first instruction in its
|
|
// block, which must have a unique predecessor. The block will
|
|
// become the merge block of a new construct, while its predecessor
|
|
// will become the header.
|
|
// Given the original OpSelect instruction:
|
|
// %id = OpSelect %type %cond %then %else
|
|
// The branching instruction of the header will be:
|
|
// OpBranchConditional %cond %true_block_id %false_block_id
|
|
// and the OpSelect instruction will be turned into:
|
|
// %id = OpPhi %type %then %true_block_id %else %false_block_id
|
|
// At most one of |true_block_id| and |false_block_id| can be zero. In
|
|
// that case, there will be no such block and all references to it
|
|
// will be replaced by %merge_block (where %merge_block is the
|
|
// block containing the OpSelect instruction).
|
|
|
|
// The result id of the OpSelect instruction.
|
|
uint32 select_id = 1;
|
|
|
|
// A fresh id for the new block that the predecessor of the block
|
|
// containing |select_id| will branch to if the condition holds.
|
|
uint32 true_block_id = 2;
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// A fresh id for the new block that the predecessor of the block
|
|
// containing |select_id| will branch to if the condition does not
|
|
// hold.
|
|
uint32 false_block_id = 3;
|
|
}
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message TransformationReplaceParamsWithStruct {
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// Replaces parameters of the function with a struct containing
|
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// values of those parameters.
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|
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// Result ids of parameters to replace.
|
|
repeated uint32 parameter_id = 1;
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// Fresh id for a new function type. This might be unused if the required type
|
|
// already exists in the module or if we can change the old type.
|
|
uint32 fresh_function_type_id = 2;
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|
|
// Fresh id for a new struct function parameter to be used as a replacement.
|
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uint32 fresh_parameter_id = 3;
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|
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// Fresh ids for struct objects containing values of replaced parameters.
|
|
// This field contains a fresh id for at least every result id of a relevant
|
|
// OpFunctionCall instruction.
|
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repeated UInt32Pair caller_id_to_fresh_composite_id = 4;
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}
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message TransformationSetFunctionControl {
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// A transformation that sets the function control operand of an OpFunction
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// instruction.
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|
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// The result id of an OpFunction instruction
|
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uint32 function_id = 1;
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|
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// The value to which the 'function control' operand should be set.
|
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uint32 function_control = 2;
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|
}
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message TransformationSetLoopControl {
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|
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// A transformation that sets the loop control operand of an OpLoopMerge
|
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// instruction.
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|
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// The id of a basic block that should contain OpLoopMerge
|
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uint32 block_id = 1;
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|
|
// The value to which the 'loop control' operand should be set.
|
|
// This must be a legal loop control mask.
|
|
uint32 loop_control = 2;
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|
|
|
// Provides a peel count value for the loop. Used if and only if the
|
|
// PeelCount bit is set. Must be zero if the PeelCount bit is not set (can
|
|
// still be zero if this bit is set).
|
|
uint32 peel_count = 3;
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|
|
|
// Provides a partial count value for the loop. Used if and only if the
|
|
// PartialCount bit is set. Must be zero if the PartialCount bit is not set
|
|
// (can still be zero if this bit is set).
|
|
uint32 partial_count = 4;
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|
|
|
}
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|
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message TransformationSetMemoryOperandsMask {
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|
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// A transformation that sets the memory operands mask of a memory access
|
|
// instruction.
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|
|
// A descriptor for a memory access instruction, e.g. an OpLoad
|
|
InstructionDescriptor memory_access_instruction = 1;
|
|
|
|
// A mask of memory operands to be applied to the instruction. It must be the
|
|
// same as the original mask, except that Volatile can be added, and
|
|
// Nontemporal can be added or removed.
|
|
uint32 memory_operands_mask = 2;
|
|
|
|
// Some memory access instructions allow more than one mask to be specified;
|
|
// this field indicates which mask should be set
|
|
uint32 memory_operands_mask_index = 3;
|
|
|
|
}
|
|
|
|
message TransformationSetSelectionControl {
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|
|
|
// A transformation that sets the selection control operand of an
|
|
// OpSelectionMerge instruction.
|
|
|
|
// The id of a basic block that should contain OpSelectionMerge
|
|
uint32 block_id = 1;
|
|
|
|
// The value to which the 'selection control' operand should be set.
|
|
// Although technically 'selection control' is a literal mask that can be
|
|
// some combination of 'None', 'Flatten' and 'DontFlatten', the combination
|
|
// 'Flatten | DontFlatten' does not make sense and is not allowed here.
|
|
uint32 selection_control = 2;
|
|
|
|
}
|
|
|
|
message TransformationSplitBlock {
|
|
|
|
// A transformation that splits a basic block into two basic blocks
|
|
|
|
// A descriptor for an instruction such that the block containing the
|
|
// described instruction should be split right before the instruction.
|
|
InstructionDescriptor instruction_to_split_before = 1;
|
|
|
|
// An id that must not yet be used by the module to which this transformation
|
|
// is applied. Rather than having the transformation choose a suitable id on
|
|
// application, we require the id to be given upfront in order to facilitate
|
|
// reducing fuzzed shaders by removing transformations. The reason is that
|
|
// future transformations may refer to the fresh id introduced by this
|
|
// transformation, and if we end up changing what that id is, due to removing
|
|
// earlier transformations, it may inhibit later transformations from
|
|
// applying.
|
|
uint32 fresh_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationStore {
|
|
|
|
// Transformation that adds an OpStore or OpAtomicStore instruction of an id to a pointer.
|
|
|
|
// The pointer to be stored to.
|
|
uint32 pointer_id = 1;
|
|
|
|
// True if and only if the load should be atomic.
|
|
bool is_atomic = 2;
|
|
|
|
// The memory scope for the atomic load. Ignored unless |is_atomic| is true.
|
|
uint32 memory_scope_id = 3;
|
|
|
|
// The memory semantics for the atomic load. Ignored unless |is_atomic| is true.
|
|
uint32 memory_semantics_id = 4;
|
|
|
|
// The value to be stored.
|
|
uint32 value_id = 5;
|
|
|
|
// A descriptor for an instruction in a block before which the new OpStore
|
|
// instruction should be inserted.
|
|
InstructionDescriptor instruction_to_insert_before = 6;
|
|
|
|
}
|
|
|
|
message TransformationSwapCommutableOperands {
|
|
|
|
// A transformation that swaps the operands of a commutative instruction.
|
|
|
|
// A descriptor for a commutative instruction
|
|
InstructionDescriptor instruction_descriptor = 1;
|
|
|
|
}
|
|
|
|
message TransformationSwapConditionalBranchOperands {
|
|
|
|
// Swaps label ids in OpBranchConditional instruction.
|
|
// Additionally, inverts the guard and swaps branch weights
|
|
// if present.
|
|
|
|
// Descriptor of the instruction to swap operands of.
|
|
InstructionDescriptor instruction_descriptor = 1;
|
|
|
|
// Fresh result id for the OpLogicalNot instruction, used
|
|
// to invert the guard.
|
|
uint32 fresh_id = 2;
|
|
|
|
}
|
|
|
|
message TransformationSwapFunctionVariables {
|
|
// A transformation that swaps function variables
|
|
|
|
// Result id of the first variable.
|
|
uint32 result_id1 = 1;
|
|
// Result id of the second variable.
|
|
uint32 result_id2 = 2;
|
|
|
|
}
|
|
|
|
message TransformationSwapTwoFunctions {
|
|
// A transformation that swaps the position of two functions within the same module.
|
|
|
|
// the IDs for the two functions that are swapped.
|
|
uint32 function_id1 = 1;
|
|
uint32 function_id2 = 2;
|
|
}
|
|
|
|
message TransformationToggleAccessChainInstruction {
|
|
|
|
// A transformation that toggles an access chain instruction.
|
|
|
|
// A descriptor for an access chain instruction
|
|
InstructionDescriptor instruction_descriptor = 1;
|
|
|
|
}
|
|
|
|
message TransformationVectorShuffle {
|
|
|
|
// A transformation that adds a vector shuffle instruction.
|
|
|
|
// A descriptor for an instruction in a block before which the new
|
|
// OpVectorShuffle instruction should be inserted
|
|
InstructionDescriptor instruction_to_insert_before = 1;
|
|
|
|
// Result id for the shuffle operation.
|
|
uint32 fresh_id = 2;
|
|
|
|
// Id of the first vector operand.
|
|
uint32 vector1 = 3;
|
|
|
|
// Id of the second vector operand.
|
|
uint32 vector2 = 4;
|
|
|
|
// Indices that indicate which components of the input vectors should be used.
|
|
repeated uint32 component = 5;
|
|
|
|
}
|
|
|
|
message TransformationWrapEarlyTerminatorInFunction {
|
|
|
|
// Replaces an early terminator - OpKill, OpReachable or OpTerminateInvocation
|
|
// - with a call to a wrapper function for the terminator.
|
|
|
|
// A fresh id for a new OpFunctionCall instruction.
|
|
uint32 fresh_id = 1;
|
|
|
|
// A descriptor for an OpKill, OpUnreachable or OpTerminateInvocation
|
|
// instruction.
|
|
InstructionDescriptor early_terminator_instruction = 2;
|
|
|
|
// An id with the same type as the enclosing function's return type that is
|
|
// available at the early terminator. This is used to change the terminator
|
|
// to OpReturnValue. Ignored if the enclosing function has void return type,
|
|
// in which case OpReturn can be used as the new terminator.
|
|
uint32 returned_value_id = 3;
|
|
|
|
}
|
|
|
|
message TransformationWrapRegionInSelection {
|
|
|
|
// Transforms a single-entry-single-exit region R into
|
|
// if (|branch_condition|) { R } else { R }
|
|
// The entry block for R becomes a selection header and
|
|
// the exit block - a selection merge.
|
|
//
|
|
// Note that the region R is not duplicated. Thus, the effect of
|
|
// this transformation can be represented as follows:
|
|
// entry
|
|
// entry / \
|
|
// | \ /
|
|
// R --> R
|
|
// | |
|
|
// exit exit
|
|
|
|
// This behaviour is different from TransformationDuplicateRegionWithSelection
|
|
// that copies the blocks in R.
|
|
|
|
// The entry block for the region R.
|
|
uint32 region_entry_block_id = 1;
|
|
|
|
// The exit block for the region R.
|
|
uint32 region_exit_block_id = 2;
|
|
|
|
// Boolean value for the condition expression.
|
|
bool branch_condition = 3;
|
|
|
|
}
|
|
|
|
message TransformationWrapVectorSynonym {
|
|
// A transformation that wraps an arithmetic operation into a vector operation
|
|
// and get the result of the original operation from the corresponding index.
|
|
// For instance, for this transformation, an scalar operation between two scalars:
|
|
// define op ∈ {+, -, *}
|
|
// c = a op b
|
|
//
|
|
// requires the availability of two vectors:
|
|
//
|
|
// va = vector(..., a, ...)
|
|
// vb = vector(..., b, ...)
|
|
//
|
|
// where a and b are in the same position i in each of their corresponding vector
|
|
// and a is synonymous with va[i] and b is synonymous with vb[i].
|
|
//
|
|
// The transformation then add an instruction vc = va op vb where c is synonymous
|
|
// with vc[i].
|
|
|
|
// The result if of the original scalar operation instruction.
|
|
uint32 instruction_id = 1;
|
|
|
|
// The result id for the first vector that contains the first value of the scalar operation.
|
|
uint32 vector_operand1 = 2;
|
|
|
|
// The result id for the second vector that contains the second value of the scalar operation.
|
|
uint32 vector_operand2 = 3;
|
|
|
|
// A fresh id for the resulted vector from the addition of the first and second vector.
|
|
uint32 fresh_id = 4;
|
|
|
|
// The position in the vector where the value of original instruction is located. Must be in
|
|
// the corresponding vector range.
|
|
uint32 scalar_position = 5;
|
|
|
|
}
|