mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 03:20:14 +00:00
28c415500d
Creates a pass that removes redundant instructions within the same basic block. This will be implemented using a hash based value numbering algorithm. Added a number of functions that check for the Vulkan descriptor types. These are used to determine if we are variables are read-only or not. Implemented a function to check if loads and variables are read-only. Implemented kernel specific and shader specific versions. A big change is that the Combinator analysis in ADCE is factored out into the IRContext as an analysis. This was done because it is being reused in the value number table.
513 lines
18 KiB
C++
513 lines
18 KiB
C++
// Copyright (c) 2016 Google 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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#include "opt/instruction.h"
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#include "opt/ir_context.h"
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#include "gmock/gmock.h"
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#include "spirv-tools/libspirv.h"
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#include "unit_spirv.h"
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#include "pass_fixture.h"
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#include "pass_utils.h"
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namespace {
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using namespace spvtools;
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using spvtest::MakeInstruction;
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using ir::Instruction;
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using ir::IRContext;
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using ir::Operand;
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using ::testing::Eq;
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using DescriptorTypeTest = PassTest<::testing::Test>;
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TEST(InstructionTest, CreateTrivial) {
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Instruction empty;
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EXPECT_EQ(SpvOpNop, empty.opcode());
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EXPECT_EQ(0u, empty.type_id());
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EXPECT_EQ(0u, empty.result_id());
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EXPECT_EQ(0u, empty.NumOperands());
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EXPECT_EQ(0u, empty.NumOperandWords());
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EXPECT_EQ(0u, empty.NumInOperandWords());
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EXPECT_EQ(empty.cend(), empty.cbegin());
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EXPECT_EQ(empty.end(), empty.begin());
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}
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TEST(InstructionTest, CreateWithOpcodeAndNoOperands) {
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IRContext context(nullptr);
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Instruction inst(&context, SpvOpReturn);
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EXPECT_EQ(SpvOpReturn, inst.opcode());
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EXPECT_EQ(0u, inst.type_id());
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EXPECT_EQ(0u, inst.result_id());
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EXPECT_EQ(0u, inst.NumOperands());
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EXPECT_EQ(0u, inst.NumOperandWords());
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EXPECT_EQ(0u, inst.NumInOperandWords());
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EXPECT_EQ(inst.cend(), inst.cbegin());
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EXPECT_EQ(inst.end(), inst.begin());
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}
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// The words for an OpTypeInt for 32-bit signed integer resulting in Id 44.
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uint32_t kSampleInstructionWords[] = {(4 << 16) | uint32_t(SpvOpTypeInt), 44,
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32, 1};
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// The operands that would be parsed from kSampleInstructionWords
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spv_parsed_operand_t kSampleParsedOperands[] = {
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{1, 1, SPV_OPERAND_TYPE_RESULT_ID, SPV_NUMBER_NONE, 0},
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{2, 1, SPV_OPERAND_TYPE_LITERAL_INTEGER, SPV_NUMBER_UNSIGNED_INT, 32},
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{3, 1, SPV_OPERAND_TYPE_LITERAL_INTEGER, SPV_NUMBER_UNSIGNED_INT, 1},
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};
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// A valid parse of kSampleParsedOperands.
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spv_parsed_instruction_t kSampleParsedInstruction = {kSampleInstructionWords,
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uint16_t(4),
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uint16_t(SpvOpTypeInt),
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SPV_EXT_INST_TYPE_NONE,
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0, // type id
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44, // result id
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kSampleParsedOperands,
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3};
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// The words for an OpAccessChain instruction.
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uint32_t kSampleAccessChainInstructionWords[] = {
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(7 << 16) | uint32_t(SpvOpAccessChain), 100, 101, 102, 103, 104, 105};
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// The operands that would be parsed from kSampleAccessChainInstructionWords.
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spv_parsed_operand_t kSampleAccessChainOperands[] = {
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{1, 1, SPV_OPERAND_TYPE_RESULT_ID, SPV_NUMBER_NONE, 0},
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{2, 1, SPV_OPERAND_TYPE_TYPE_ID, SPV_NUMBER_NONE, 0},
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{3, 1, SPV_OPERAND_TYPE_ID, SPV_NUMBER_NONE, 0},
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{4, 1, SPV_OPERAND_TYPE_ID, SPV_NUMBER_NONE, 0},
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{5, 1, SPV_OPERAND_TYPE_ID, SPV_NUMBER_NONE, 0},
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{6, 1, SPV_OPERAND_TYPE_ID, SPV_NUMBER_NONE, 0},
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};
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// A valid parse of kSampleAccessChainInstructionWords
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spv_parsed_instruction_t kSampleAccessChainInstruction = {
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kSampleAccessChainInstructionWords,
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uint16_t(7),
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uint16_t(SpvOpAccessChain),
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SPV_EXT_INST_TYPE_NONE,
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100, // type id
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101, // result id
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kSampleAccessChainOperands,
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6};
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// The words for an OpControlBarrier instruction.
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uint32_t kSampleControlBarrierInstructionWords[] = {
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(4 << 16) | uint32_t(SpvOpControlBarrier), 100, 101, 102};
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// The operands that would be parsed from kSampleControlBarrierInstructionWords.
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spv_parsed_operand_t kSampleControlBarrierOperands[] = {
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{1, 1, SPV_OPERAND_TYPE_SCOPE_ID, SPV_NUMBER_NONE, 0}, // Execution
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{2, 1, SPV_OPERAND_TYPE_SCOPE_ID, SPV_NUMBER_NONE, 0}, // Memory
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{3, 1, SPV_OPERAND_TYPE_MEMORY_SEMANTICS_ID, SPV_NUMBER_NONE,
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0}, // Semantics
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};
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// A valid parse of kSampleControlBarrierInstructionWords
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spv_parsed_instruction_t kSampleControlBarrierInstruction = {
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kSampleControlBarrierInstructionWords,
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uint16_t(4),
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uint16_t(SpvOpControlBarrier),
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SPV_EXT_INST_TYPE_NONE,
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0, // type id
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0, // result id
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kSampleControlBarrierOperands,
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3};
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TEST(InstructionTest, CreateWithOpcodeAndOperands) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleParsedInstruction);
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EXPECT_EQ(SpvOpTypeInt, inst.opcode());
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EXPECT_EQ(0u, inst.type_id());
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EXPECT_EQ(44u, inst.result_id());
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EXPECT_EQ(3u, inst.NumOperands());
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EXPECT_EQ(3u, inst.NumOperandWords());
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EXPECT_EQ(2u, inst.NumInOperandWords());
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}
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TEST(InstructionTest, GetOperand) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleParsedInstruction);
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EXPECT_THAT(inst.GetOperand(0).words, Eq(std::vector<uint32_t>{44}));
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EXPECT_THAT(inst.GetOperand(1).words, Eq(std::vector<uint32_t>{32}));
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EXPECT_THAT(inst.GetOperand(2).words, Eq(std::vector<uint32_t>{1}));
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}
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TEST(InstructionTest, GetInOperand) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleParsedInstruction);
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EXPECT_THAT(inst.GetInOperand(0).words, Eq(std::vector<uint32_t>{32}));
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EXPECT_THAT(inst.GetInOperand(1).words, Eq(std::vector<uint32_t>{1}));
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}
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TEST(InstructionTest, OperandConstIterators) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleParsedInstruction);
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// Spot check iteration across operands.
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auto cbegin = inst.cbegin();
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auto cend = inst.cend();
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EXPECT_NE(cend, inst.cbegin());
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auto citer = inst.cbegin();
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for (int i = 0; i < 3; ++i, ++citer) {
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const auto& operand = *citer;
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EXPECT_THAT(operand.type, Eq(kSampleParsedOperands[i].type));
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EXPECT_THAT(operand.words,
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Eq(std::vector<uint32_t>{kSampleInstructionWords[i + 1]}));
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EXPECT_NE(cend, citer);
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}
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EXPECT_EQ(cend, citer);
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// Check that cbegin and cend have not changed.
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EXPECT_EQ(cbegin, inst.cbegin());
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EXPECT_EQ(cend, inst.cend());
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// Check arithmetic.
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const Operand& operand2 = *(inst.cbegin() + 2);
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EXPECT_EQ(SPV_OPERAND_TYPE_LITERAL_INTEGER, operand2.type);
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}
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TEST(InstructionTest, OperandIterators) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleParsedInstruction);
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// Spot check iteration across operands, with mutable iterators.
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auto begin = inst.begin();
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auto end = inst.end();
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EXPECT_NE(end, inst.begin());
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auto iter = inst.begin();
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for (int i = 0; i < 3; ++i, ++iter) {
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const auto& operand = *iter;
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EXPECT_THAT(operand.type, Eq(kSampleParsedOperands[i].type));
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EXPECT_THAT(operand.words,
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Eq(std::vector<uint32_t>{kSampleInstructionWords[i + 1]}));
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EXPECT_NE(end, iter);
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}
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EXPECT_EQ(end, iter);
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// Check that begin and end have not changed.
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EXPECT_EQ(begin, inst.begin());
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EXPECT_EQ(end, inst.end());
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// Check arithmetic.
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Operand& operand2 = *(inst.begin() + 2);
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EXPECT_EQ(SPV_OPERAND_TYPE_LITERAL_INTEGER, operand2.type);
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// Check mutation through an iterator.
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operand2.type = SPV_OPERAND_TYPE_TYPE_ID;
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EXPECT_EQ(SPV_OPERAND_TYPE_TYPE_ID, (*(inst.cbegin() + 2)).type);
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}
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TEST(InstructionTest, ForInIdStandardIdTypes) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleAccessChainInstruction);
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std::vector<uint32_t> ids;
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inst.ForEachInId([&ids](const uint32_t* idptr) { ids.push_back(*idptr); });
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EXPECT_THAT(ids, Eq(std::vector<uint32_t>{102, 103, 104, 105}));
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ids.clear();
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inst.ForEachInId([&ids](uint32_t* idptr) { ids.push_back(*idptr); });
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EXPECT_THAT(ids, Eq(std::vector<uint32_t>{102, 103, 104, 105}));
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}
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TEST(InstructionTest, ForInIdNonstandardIdTypes) {
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IRContext context(nullptr);
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Instruction inst(&context, kSampleControlBarrierInstruction);
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std::vector<uint32_t> ids;
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inst.ForEachInId([&ids](const uint32_t* idptr) { ids.push_back(*idptr); });
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EXPECT_THAT(ids, Eq(std::vector<uint32_t>{100, 101, 102}));
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ids.clear();
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inst.ForEachInId([&ids](uint32_t* idptr) { ids.push_back(*idptr); });
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EXPECT_THAT(ids, Eq(std::vector<uint32_t>{100, 101, 102}));
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}
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TEST(InstructionTest, UniqueIds) {
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IRContext context(nullptr);
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Instruction inst1(&context);
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Instruction inst2(&context);
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EXPECT_NE(inst1.unique_id(), inst2.unique_id());
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}
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TEST(InstructionTest, CloneUniqueIdDifferent) {
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IRContext context(nullptr);
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Instruction inst(&context);
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std::unique_ptr<Instruction> clone(inst.Clone(&context));
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EXPECT_EQ(inst.context(), clone->context());
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EXPECT_NE(inst.unique_id(), clone->unique_id());
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}
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TEST(InstructionTest, CloneDifferentContext) {
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IRContext c1(nullptr);
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IRContext c2(nullptr);
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Instruction inst(&c1);
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std::unique_ptr<Instruction> clone(inst.Clone(&c2));
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EXPECT_EQ(&c1, inst.context());
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EXPECT_EQ(&c2, clone->context());
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EXPECT_NE(&c1, &c2);
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}
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TEST(InstructionTest, CloneDifferentContextDifferentUniqueId) {
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IRContext c1(nullptr);
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IRContext c2(nullptr);
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Instruction inst(&c1);
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Instruction other(&c2);
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std::unique_ptr<Instruction> clone(inst.Clone(&c2));
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EXPECT_EQ(&c2, clone->context());
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EXPECT_NE(other.unique_id(), clone->unique_id());
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}
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TEST(InstructionTest, EqualsEqualsOperator) {
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IRContext context(nullptr);
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Instruction i1(&context);
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Instruction i2(&context);
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std::unique_ptr<Instruction> clone(i1.Clone(&context));
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EXPECT_TRUE(i1 == i1);
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EXPECT_FALSE(i1 == i2);
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EXPECT_FALSE(i1 == *clone);
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EXPECT_FALSE(i2 == *clone);
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}
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TEST(InstructionTest, LessThanOperator) {
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IRContext context(nullptr);
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Instruction i1(&context);
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Instruction i2(&context);
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std::unique_ptr<Instruction> clone(i1.Clone(&context));
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EXPECT_TRUE(i1 < i2);
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EXPECT_TRUE(i1 < *clone);
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EXPECT_TRUE(i2 < *clone);
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}
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TEST_F(DescriptorTypeTest, StorageImage) {
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %2 "main"
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OpExecutionMode %2 OriginUpperLeft
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OpSource GLSL 430
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OpName %3 "myStorageImage"
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OpDecorate %3 DescriptorSet 0
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OpDecorate %3 Binding 0
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%4 = OpTypeVoid
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%5 = OpTypeFunction %4
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%6 = OpTypeFloat 32
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%7 = OpTypeImage %6 2D 0 0 0 2 R32f
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%8 = OpTypePointer UniformConstant %7
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%3 = OpVariable %8 UniformConstant
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%2 = OpFunction %4 None %5
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%9 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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std::unique_ptr<ir::IRContext> context =
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BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
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Instruction* type = context->get_def_use_mgr()->GetDef(8);
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EXPECT_TRUE(type->IsVulkanStorageImage());
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EXPECT_FALSE(type->IsVulkanSampledImage());
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EXPECT_FALSE(type->IsVulkanStorageTexelBuffer());
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EXPECT_FALSE(type->IsVulkanStorageBuffer());
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EXPECT_FALSE(type->IsVulkanUniformBuffer());
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Instruction* variable = context->get_def_use_mgr()->GetDef(3);
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EXPECT_FALSE(variable->IsReadOnlyVariable());
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}
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TEST_F(DescriptorTypeTest, SampledImage) {
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %2 "main"
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OpExecutionMode %2 OriginUpperLeft
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OpSource GLSL 430
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OpName %3 "myStorageImage"
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OpDecorate %3 DescriptorSet 0
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OpDecorate %3 Binding 0
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%4 = OpTypeVoid
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%5 = OpTypeFunction %4
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%6 = OpTypeFloat 32
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%7 = OpTypeImage %6 2D 0 0 0 1 Unknown
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%8 = OpTypePointer UniformConstant %7
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%3 = OpVariable %8 UniformConstant
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%2 = OpFunction %4 None %5
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%9 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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std::unique_ptr<ir::IRContext> context =
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BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
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Instruction* type = context->get_def_use_mgr()->GetDef(8);
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EXPECT_FALSE(type->IsVulkanStorageImage());
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EXPECT_TRUE(type->IsVulkanSampledImage());
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EXPECT_FALSE(type->IsVulkanStorageTexelBuffer());
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EXPECT_FALSE(type->IsVulkanStorageBuffer());
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EXPECT_FALSE(type->IsVulkanUniformBuffer());
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Instruction* variable = context->get_def_use_mgr()->GetDef(3);
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EXPECT_TRUE(variable->IsReadOnlyVariable());
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}
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TEST_F(DescriptorTypeTest, StorageTexelBuffer) {
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %2 "main"
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OpExecutionMode %2 OriginUpperLeft
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OpSource GLSL 430
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OpName %3 "myStorageImage"
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OpDecorate %3 DescriptorSet 0
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OpDecorate %3 Binding 0
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%4 = OpTypeVoid
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%5 = OpTypeFunction %4
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%6 = OpTypeFloat 32
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%7 = OpTypeImage %6 Buffer 0 0 0 2 R32f
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%8 = OpTypePointer UniformConstant %7
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%3 = OpVariable %8 UniformConstant
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%2 = OpFunction %4 None %5
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%9 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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std::unique_ptr<ir::IRContext> context =
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BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
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Instruction* type = context->get_def_use_mgr()->GetDef(8);
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EXPECT_FALSE(type->IsVulkanStorageImage());
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EXPECT_FALSE(type->IsVulkanSampledImage());
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EXPECT_TRUE(type->IsVulkanStorageTexelBuffer());
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EXPECT_FALSE(type->IsVulkanStorageBuffer());
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EXPECT_FALSE(type->IsVulkanUniformBuffer());
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Instruction* variable = context->get_def_use_mgr()->GetDef(3);
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EXPECT_FALSE(variable->IsReadOnlyVariable());
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}
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TEST_F(DescriptorTypeTest, StorageBuffer) {
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %2 "main"
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OpExecutionMode %2 OriginUpperLeft
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OpSource GLSL 430
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OpName %3 "myStorageImage"
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OpDecorate %3 DescriptorSet 0
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OpDecorate %3 Binding 0
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OpDecorate %9 BufferBlock
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%4 = OpTypeVoid
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%5 = OpTypeFunction %4
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%6 = OpTypeFloat 32
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%7 = OpTypeVector %6 4
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%8 = OpTypeRuntimeArray %7
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%9 = OpTypeStruct %8
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%10 = OpTypePointer Uniform %9
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%3 = OpVariable %10 Uniform
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%2 = OpFunction %4 None %5
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%11 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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std::unique_ptr<ir::IRContext> context =
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BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
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Instruction* type = context->get_def_use_mgr()->GetDef(10);
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EXPECT_FALSE(type->IsVulkanStorageImage());
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EXPECT_FALSE(type->IsVulkanSampledImage());
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EXPECT_FALSE(type->IsVulkanStorageTexelBuffer());
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EXPECT_TRUE(type->IsVulkanStorageBuffer());
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EXPECT_FALSE(type->IsVulkanUniformBuffer());
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Instruction* variable = context->get_def_use_mgr()->GetDef(3);
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EXPECT_FALSE(variable->IsReadOnlyVariable());
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}
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TEST_F(DescriptorTypeTest, UniformBuffer) {
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %2 "main"
|
|
OpExecutionMode %2 OriginUpperLeft
|
|
OpSource GLSL 430
|
|
OpName %3 "myStorageImage"
|
|
OpDecorate %3 DescriptorSet 0
|
|
OpDecorate %3 Binding 0
|
|
OpDecorate %9 Block
|
|
%4 = OpTypeVoid
|
|
%5 = OpTypeFunction %4
|
|
%6 = OpTypeFloat 32
|
|
%7 = OpTypeVector %6 4
|
|
%8 = OpTypeRuntimeArray %7
|
|
%9 = OpTypeStruct %8
|
|
%10 = OpTypePointer Uniform %9
|
|
%3 = OpVariable %10 Uniform
|
|
%2 = OpFunction %4 None %5
|
|
%11 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
std::unique_ptr<ir::IRContext> context =
|
|
BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
|
|
Instruction* type = context->get_def_use_mgr()->GetDef(10);
|
|
EXPECT_FALSE(type->IsVulkanStorageImage());
|
|
EXPECT_FALSE(type->IsVulkanSampledImage());
|
|
EXPECT_FALSE(type->IsVulkanStorageTexelBuffer());
|
|
EXPECT_FALSE(type->IsVulkanStorageBuffer());
|
|
EXPECT_TRUE(type->IsVulkanUniformBuffer());
|
|
|
|
Instruction* variable = context->get_def_use_mgr()->GetDef(3);
|
|
EXPECT_TRUE(variable->IsReadOnlyVariable());
|
|
}
|
|
|
|
TEST_F(DescriptorTypeTest, NonWritableIsReadOnly) {
|
|
const std::string text = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %2 "main"
|
|
OpExecutionMode %2 OriginUpperLeft
|
|
OpSource GLSL 430
|
|
OpName %3 "myStorageImage"
|
|
OpDecorate %3 DescriptorSet 0
|
|
OpDecorate %3 Binding 0
|
|
OpDecorate %9 BufferBlock
|
|
OpDecorate %3 NonWritable
|
|
%4 = OpTypeVoid
|
|
%5 = OpTypeFunction %4
|
|
%6 = OpTypeFloat 32
|
|
%7 = OpTypeVector %6 4
|
|
%8 = OpTypeRuntimeArray %7
|
|
%9 = OpTypeStruct %8
|
|
%10 = OpTypePointer Uniform %9
|
|
%3 = OpVariable %10 Uniform
|
|
%2 = OpFunction %4 None %5
|
|
%11 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
std::unique_ptr<ir::IRContext> context =
|
|
BuildModule(SPV_ENV_UNIVERSAL_1_2, nullptr, text);
|
|
Instruction* variable = context->get_def_use_mgr()->GetDef(3);
|
|
EXPECT_TRUE(variable->IsReadOnlyVariable());
|
|
}
|
|
} // anonymous namespace
|