mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-26 01:31:06 +00:00
19dc86c48c
Debug[No]Line are tracked and optimized using the same mechanism that tracks
and optimizes Op[No]Line.
Also:
- Fix missing DebugScope at top of block.
- Allow scalar replacement of access chain in DebugDeclare
387 lines
16 KiB
C++
387 lines
16 KiB
C++
// Copyright (c) 2015-2016 The Khronos Group Inc.
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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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// Source code for logical layout validation as described in section 2.4
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#include <cassert>
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#include "DebugInfo.h"
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#include "NonSemanticShaderDebugInfo100.h"
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#include "OpenCLDebugInfo100.h"
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#include "source/diagnostic.h"
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#include "source/opcode.h"
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#include "source/operand.h"
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#include "source/val/function.h"
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#include "source/val/instruction.h"
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#include "source/val/validate.h"
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#include "source/val/validation_state.h"
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namespace spvtools {
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namespace val {
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namespace {
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// Module scoped instructions are processed by determining if the opcode
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// is part of the current layout section. If it is not then the next sections is
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// checked.
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spv_result_t ModuleScopedInstructions(ValidationState_t& _,
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const Instruction* inst, SpvOp opcode) {
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switch (opcode) {
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case SpvOpExtInst:
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if (spvExtInstIsDebugInfo(inst->ext_inst_type())) {
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const uint32_t ext_inst_index = inst->word(4);
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bool local_debug_info = false;
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if (inst->ext_inst_type() == SPV_EXT_INST_TYPE_OPENCL_DEBUGINFO_100) {
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const OpenCLDebugInfo100Instructions ext_inst_key =
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OpenCLDebugInfo100Instructions(ext_inst_index);
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if (ext_inst_key == OpenCLDebugInfo100DebugScope ||
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ext_inst_key == OpenCLDebugInfo100DebugNoScope ||
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ext_inst_key == OpenCLDebugInfo100DebugDeclare ||
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ext_inst_key == OpenCLDebugInfo100DebugValue) {
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local_debug_info = true;
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}
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} else if (inst->ext_inst_type() ==
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SPV_EXT_INST_TYPE_NONSEMANTIC_SHADER_DEBUGINFO_100) {
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const NonSemanticShaderDebugInfo100Instructions ext_inst_key =
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NonSemanticShaderDebugInfo100Instructions(ext_inst_index);
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if (ext_inst_key == NonSemanticShaderDebugInfo100DebugScope ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugNoScope ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugDeclare ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugValue ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugLine ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugNoLine ||
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ext_inst_key ==
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NonSemanticShaderDebugInfo100DebugFunctionDefinition) {
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local_debug_info = true;
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}
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} else {
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const DebugInfoInstructions ext_inst_key =
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DebugInfoInstructions(ext_inst_index);
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if (ext_inst_key == DebugInfoDebugScope ||
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ext_inst_key == DebugInfoDebugNoScope ||
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ext_inst_key == DebugInfoDebugDeclare ||
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ext_inst_key == DebugInfoDebugValue) {
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local_debug_info = true;
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}
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}
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if (local_debug_info) {
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if (_.in_function_body() == false) {
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// DebugScope, DebugNoScope, DebugDeclare, DebugValue must
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// appear in a function body.
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "DebugScope, DebugNoScope, DebugDeclare, DebugValue "
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<< "of debug info extension must appear in a function "
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<< "body";
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}
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} else {
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// Debug info extinst opcodes other than DebugScope, DebugNoScope,
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// DebugDeclare, DebugValue must be placed between section 9 (types,
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// constants, global variables) and section 10 (function
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// declarations).
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if (_.current_layout_section() < kLayoutTypes ||
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_.current_layout_section() >= kLayoutFunctionDeclarations) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Debug info extension instructions other than "
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<< "DebugScope, DebugNoScope, DebugDeclare, DebugValue "
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<< "must appear between section 9 (types, constants, "
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<< "global variables) and section 10 (function "
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<< "declarations)";
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}
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}
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} else if (spvExtInstIsNonSemantic(inst->ext_inst_type())) {
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// non-semantic extinst opcodes are allowed beginning in the types
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// section, but since they must name a return type they cannot be the
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// first instruction in the types section. Therefore check that we are
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// already in it.
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if (_.current_layout_section() < kLayoutTypes) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Non-semantic OpExtInst must not appear before types "
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<< "section";
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}
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} else {
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// otherwise they must be used in a block
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if (_.current_layout_section() < kLayoutFunctionDefinitions) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode) << " must appear in a block";
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}
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}
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break;
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default:
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break;
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}
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while (_.IsOpcodeInCurrentLayoutSection(opcode) == false) {
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if (_.IsOpcodeInPreviousLayoutSection(opcode)) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode) << " is in an invalid layout section";
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}
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_.ProgressToNextLayoutSectionOrder();
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switch (_.current_layout_section()) {
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case kLayoutMemoryModel:
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if (opcode != SpvOpMemoryModel) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode)
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<< " cannot appear before the memory model instruction";
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}
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break;
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case kLayoutFunctionDeclarations:
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// All module sections have been processed. Recursively call
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// ModuleLayoutPass to process the next section of the module
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return ModuleLayoutPass(_, inst);
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default:
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break;
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}
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}
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return SPV_SUCCESS;
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}
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// Function declaration validation is performed by making sure that the
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// FunctionParameter and FunctionEnd instructions only appear inside of
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// functions. It also ensures that the Function instruction does not appear
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// inside of another function. This stage ends when the first label is
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// encountered inside of a function.
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spv_result_t FunctionScopedInstructions(ValidationState_t& _,
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const Instruction* inst, SpvOp opcode) {
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// Make sure we advance into the function definitions when we hit
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// non-function declaration instructions.
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if (_.current_layout_section() == kLayoutFunctionDeclarations &&
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!_.IsOpcodeInCurrentLayoutSection(opcode)) {
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_.ProgressToNextLayoutSectionOrder();
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if (_.in_function_body()) {
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if (auto error = _.current_function().RegisterSetFunctionDeclType(
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FunctionDecl::kFunctionDeclDefinition)) {
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return error;
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}
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}
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}
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if (_.IsOpcodeInCurrentLayoutSection(opcode)) {
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switch (opcode) {
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case SpvOpFunction: {
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if (_.in_function_body()) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Cannot declare a function in a function body";
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}
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auto control_mask = inst->GetOperandAs<SpvFunctionControlMask>(2);
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if (auto error =
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_.RegisterFunction(inst->id(), inst->type_id(), control_mask,
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inst->GetOperandAs<uint32_t>(3)))
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return error;
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if (_.current_layout_section() == kLayoutFunctionDefinitions) {
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if (auto error = _.current_function().RegisterSetFunctionDeclType(
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FunctionDecl::kFunctionDeclDefinition))
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return error;
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}
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} break;
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case SpvOpFunctionParameter:
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if (_.in_function_body() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Function parameter instructions must be in a "
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"function body";
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}
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if (_.current_function().block_count() != 0) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Function parameters must only appear immediately after "
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"the function definition";
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}
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if (auto error = _.current_function().RegisterFunctionParameter(
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inst->id(), inst->type_id()))
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return error;
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break;
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case SpvOpFunctionEnd:
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if (_.in_function_body() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Function end instructions must be in a function body";
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}
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if (_.in_block()) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Function end cannot be called in blocks";
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}
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if (_.current_function().block_count() == 0 &&
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_.current_layout_section() == kLayoutFunctionDefinitions) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Function declarations must appear before "
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"function definitions.";
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}
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if (_.current_layout_section() == kLayoutFunctionDeclarations) {
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if (auto error = _.current_function().RegisterSetFunctionDeclType(
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FunctionDecl::kFunctionDeclDeclaration))
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return error;
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}
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if (auto error = _.RegisterFunctionEnd()) return error;
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break;
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case SpvOpLine:
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case SpvOpNoLine:
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break;
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case SpvOpLabel:
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// If the label is encountered then the current function is a
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// definition so set the function to a declaration and update the
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// module section
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if (_.in_function_body() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Label instructions must be in a function body";
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}
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if (_.in_block()) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "A block must end with a branch instruction.";
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}
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break;
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case SpvOpExtInst:
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if (spvExtInstIsDebugInfo(inst->ext_inst_type())) {
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const uint32_t ext_inst_index = inst->word(4);
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bool local_debug_info = false;
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if (inst->ext_inst_type() == SPV_EXT_INST_TYPE_OPENCL_DEBUGINFO_100) {
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const OpenCLDebugInfo100Instructions ext_inst_key =
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OpenCLDebugInfo100Instructions(ext_inst_index);
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if (ext_inst_key == OpenCLDebugInfo100DebugScope ||
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ext_inst_key == OpenCLDebugInfo100DebugNoScope ||
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ext_inst_key == OpenCLDebugInfo100DebugDeclare ||
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ext_inst_key == OpenCLDebugInfo100DebugValue) {
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local_debug_info = true;
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}
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} else if (inst->ext_inst_type() ==
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SPV_EXT_INST_TYPE_NONSEMANTIC_SHADER_DEBUGINFO_100) {
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const NonSemanticShaderDebugInfo100Instructions ext_inst_key =
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NonSemanticShaderDebugInfo100Instructions(ext_inst_index);
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if (ext_inst_key == NonSemanticShaderDebugInfo100DebugScope ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugNoScope ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugDeclare ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugValue ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugLine ||
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ext_inst_key == NonSemanticShaderDebugInfo100DebugNoLine ||
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ext_inst_key ==
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NonSemanticShaderDebugInfo100DebugFunctionDefinition) {
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local_debug_info = true;
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}
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} else {
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const DebugInfoInstructions ext_inst_key =
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DebugInfoInstructions(ext_inst_index);
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if (ext_inst_key == DebugInfoDebugScope ||
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ext_inst_key == DebugInfoDebugNoScope ||
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ext_inst_key == DebugInfoDebugDeclare ||
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ext_inst_key == DebugInfoDebugValue) {
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local_debug_info = true;
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}
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}
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if (local_debug_info) {
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if (_.in_function_body() == false) {
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// DebugScope, DebugNoScope, DebugDeclare, DebugValue must
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// appear in a function body.
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "DebugScope, DebugNoScope, DebugDeclare, DebugValue "
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<< "of debug info extension must appear in a function "
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<< "body";
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}
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} else {
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// Debug info extinst opcodes other than DebugScope, DebugNoScope,
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// DebugDeclare, DebugValue must be placed between section 9 (types,
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// constants, global variables) and section 10 (function
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// declarations).
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if (_.current_layout_section() < kLayoutTypes ||
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_.current_layout_section() >= kLayoutFunctionDeclarations) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Debug info extension instructions other than "
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<< "DebugScope, DebugNoScope, DebugDeclare, DebugValue "
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<< "must appear between section 9 (types, constants, "
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<< "global variables) and section 10 (function "
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<< "declarations)";
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}
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}
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} else if (spvExtInstIsNonSemantic(inst->ext_inst_type())) {
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// non-semantic extinst opcodes are allowed beginning in the types
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// section, but must either be placed outside a function declaration,
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// or inside a block.
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if (_.current_layout_section() < kLayoutTypes) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Non-semantic OpExtInst must not appear before types "
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<< "section";
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} else if (_.in_function_body() && _.in_block() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "Non-semantic OpExtInst within function definition must "
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"appear in a block";
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}
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} else {
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// otherwise they must be used in a block
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if (_.in_block() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode) << " must appear in a block";
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}
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}
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break;
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default:
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if (_.current_layout_section() == kLayoutFunctionDeclarations &&
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_.in_function_body()) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< "A function must begin with a label";
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} else {
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if (_.in_block() == false) {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode) << " must appear in a block";
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}
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}
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break;
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}
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} else {
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return _.diag(SPV_ERROR_INVALID_LAYOUT, inst)
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<< spvOpcodeString(opcode)
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<< " cannot appear in a function declaration";
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}
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return SPV_SUCCESS;
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}
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} // namespace
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// TODO(umar): Check linkage capabilities for function declarations
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// TODO(umar): Better error messages
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// NOTE: This function does not handle CFG related validation
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// Performs logical layout validation. See Section 2.4
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spv_result_t ModuleLayoutPass(ValidationState_t& _, const Instruction* inst) {
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const SpvOp opcode = inst->opcode();
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switch (_.current_layout_section()) {
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case kLayoutCapabilities:
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case kLayoutExtensions:
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case kLayoutExtInstImport:
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case kLayoutMemoryModel:
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case kLayoutEntryPoint:
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case kLayoutExecutionMode:
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case kLayoutDebug1:
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case kLayoutDebug2:
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case kLayoutDebug3:
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case kLayoutAnnotations:
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case kLayoutTypes:
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if (auto error = ModuleScopedInstructions(_, inst, opcode)) return error;
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break;
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case kLayoutFunctionDeclarations:
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case kLayoutFunctionDefinitions:
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if (auto error = FunctionScopedInstructions(_, inst, opcode)) {
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return error;
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}
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break;
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}
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return SPV_SUCCESS;
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}
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} // namespace val
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} // namespace spvtools
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