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SPIRV-Tools/test/reduce/merge_blocks_test.cpp

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Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
// Copyright (c) 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "source/reduce/merge_blocks_reduction_opportunity_finder.h"
reduce: miscellaneous fixes (#2494) * Fix .gitignore * Add missing reduction pass: RemoveBlockReductionOpportunityFinder * Add DumpShader functions in test_reduce for debugging * Add DumpShader functions in spirv-reduce for debugging * Fix include style * Don't use "using namespace"
2019-04-08 18:37:17 +00:00
#include "source/opt/build_module.h"
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
#include "source/reduce/reduction_opportunity.h"
reduce: miscellaneous fixes (#2494) * Fix .gitignore * Add missing reduction pass: RemoveBlockReductionOpportunityFinder * Add DumpShader functions in test_reduce for debugging * Add DumpShader functions in spirv-reduce for debugging * Fix include style * Don't use "using namespace"
2019-04-08 18:37:17 +00:00
#include "test/reduce/reduce_test_util.h"
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
namespace spvtools {
namespace reduce {
namespace {
TEST(MergeBlocksReductionPassTest, BasicCheck) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpBranch %13
%13 = OpLabel
OpStore %8 %9
OpBranch %14
%14 = OpLabel
OpStore %8 %10
OpBranch %15
%15 = OpLabel
OpStore %8 %11
OpBranch %16
%16 = OpLabel
OpStore %8 %12
OpBranch %17
%17 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, shader, kReduceAssembleOption);
const auto ops =
MergeBlocksReductionOpportunityFinder().GetAvailableOpportunities(
spirv-reduce: Support reducing a specific function (#3774) Motivated by integrating spirv-reduce into spirv-fuzz, so that an added function can be made smaller during shrinking, this adds support in spirv-reduce for asking reduction to be restricted to the instructions of a single specified function.
2020-09-11 05:29:43 +00:00
context.get(), 0);
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
ASSERT_EQ(5, ops.size());
// Try order 3, 0, 2, 4, 1
ASSERT_TRUE(ops[3]->PreconditionHolds());
ops[3]->TryToApply();
std::string after_op_3 = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpBranch %13
%13 = OpLabel
OpStore %8 %9
OpBranch %14
%14 = OpLabel
OpStore %8 %10
OpBranch %15
%15 = OpLabel
OpStore %8 %11
OpStore %8 %12
OpBranch %17
%17 = OpLabel
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after_op_3, context.get());
ASSERT_TRUE(ops[0]->PreconditionHolds());
ops[0]->TryToApply();
std::string after_op_0 = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpStore %8 %9
OpBranch %14
%14 = OpLabel
OpStore %8 %10
OpBranch %15
%15 = OpLabel
OpStore %8 %11
OpStore %8 %12
OpBranch %17
%17 = OpLabel
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after_op_0, context.get());
ASSERT_TRUE(ops[2]->PreconditionHolds());
ops[2]->TryToApply();
std::string after_op_2 = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpStore %8 %9
OpBranch %14
%14 = OpLabel
OpStore %8 %10
OpStore %8 %11
OpStore %8 %12
OpBranch %17
%17 = OpLabel
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after_op_2, context.get());
ASSERT_TRUE(ops[4]->PreconditionHolds());
ops[4]->TryToApply();
std::string after_op_4 = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpStore %8 %9
OpBranch %14
%14 = OpLabel
OpStore %8 %10
OpStore %8 %11
OpStore %8 %12
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after_op_4, context.get());
ASSERT_TRUE(ops[1]->PreconditionHolds());
ops[1]->TryToApply();
std::string after_op_1 = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%10 = OpConstant %6 2
%11 = OpConstant %6 3
%12 = OpConstant %6 4
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
OpStore %8 %9
OpStore %8 %10
OpStore %8 %11
OpStore %8 %12
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after_op_1, context.get());
}
TEST(MergeBlocksReductionPassTest, Loops) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
OpName %10 "i"
OpName %29 "i"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%11 = OpConstant %6 0
%18 = OpConstant %6 10
%19 = OpTypeBool
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%10 = OpVariable %7 Function
%29 = OpVariable %7 Function
OpStore %8 %9
OpBranch %45
%45 = OpLabel
OpStore %10 %11
OpBranch %12
%12 = OpLabel
OpLoopMerge %14 %15 None
OpBranch %16
%16 = OpLabel
%17 = OpLoad %6 %10
OpBranch %46
%46 = OpLabel
%20 = OpSLessThan %19 %17 %18
OpBranchConditional %20 %13 %14
%13 = OpLabel
%21 = OpLoad %6 %10
OpBranch %47
%47 = OpLabel
%22 = OpLoad %6 %8
%23 = OpIAdd %6 %22 %21
OpStore %8 %23
%24 = OpLoad %6 %10
%25 = OpLoad %6 %8
%26 = OpIAdd %6 %25 %24
OpStore %8 %26
OpBranch %48
%48 = OpLabel
OpBranch %15
%15 = OpLabel
%27 = OpLoad %6 %10
%28 = OpIAdd %6 %27 %9
OpStore %10 %28
OpBranch %12
%14 = OpLabel
OpStore %29 %11
OpBranch %49
%49 = OpLabel
OpBranch %30
%30 = OpLabel
OpLoopMerge %32 %33 None
OpBranch %34
%34 = OpLabel
%35 = OpLoad %6 %29
%36 = OpSLessThan %19 %35 %18
OpBranch %50
%50 = OpLabel
OpBranchConditional %36 %31 %32
%31 = OpLabel
%37 = OpLoad %6 %29
%38 = OpLoad %6 %8
%39 = OpIAdd %6 %38 %37
OpStore %8 %39
%40 = OpLoad %6 %29
%41 = OpLoad %6 %8
%42 = OpIAdd %6 %41 %40
OpStore %8 %42
OpBranch %33
%33 = OpLabel
%43 = OpLoad %6 %29
%44 = OpIAdd %6 %43 %9
OpBranch %51
%51 = OpLabel
OpStore %29 %44
OpBranch %30
%32 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, shader, kReduceAssembleOption);
const auto ops =
MergeBlocksReductionOpportunityFinder().GetAvailableOpportunities(
spirv-reduce: Support reducing a specific function (#3774) Motivated by integrating spirv-reduce into spirv-fuzz, so that an added function can be made smaller during shrinking, this adds support in spirv-reduce for asking reduction to be restricted to the instructions of a single specified function.
2020-09-11 05:29:43 +00:00
context.get(), 0);
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
ASSERT_EQ(11, ops.size());
for (auto& ri : ops) {
ASSERT_TRUE(ri->PreconditionHolds());
ri->TryToApply();
}
std::string after = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
OpName %10 "i"
OpName %29 "i"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%11 = OpConstant %6 0
%18 = OpConstant %6 10
%19 = OpTypeBool
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%10 = OpVariable %7 Function
%29 = OpVariable %7 Function
OpStore %8 %9
OpStore %10 %11
OpBranch %12
%12 = OpLabel
%17 = OpLoad %6 %10
%20 = OpSLessThan %19 %17 %18
OpLoopMerge %14 %13 None
OpBranchConditional %20 %13 %14
%13 = OpLabel
%21 = OpLoad %6 %10
%22 = OpLoad %6 %8
%23 = OpIAdd %6 %22 %21
OpStore %8 %23
%24 = OpLoad %6 %10
%25 = OpLoad %6 %8
%26 = OpIAdd %6 %25 %24
OpStore %8 %26
%27 = OpLoad %6 %10
%28 = OpIAdd %6 %27 %9
OpStore %10 %28
OpBranch %12
%14 = OpLabel
OpStore %29 %11
OpBranch %30
%30 = OpLabel
%35 = OpLoad %6 %29
%36 = OpSLessThan %19 %35 %18
OpLoopMerge %32 %31 None
OpBranchConditional %36 %31 %32
%31 = OpLabel
%37 = OpLoad %6 %29
%38 = OpLoad %6 %8
%39 = OpIAdd %6 %38 %37
OpStore %8 %39
%40 = OpLoad %6 %29
%41 = OpLoad %6 %8
%42 = OpIAdd %6 %41 %40
OpStore %8 %42
%43 = OpLoad %6 %29
%44 = OpIAdd %6 %43 %9
OpStore %29 %44
OpBranch %30
%32 = OpLabel
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after, context.get());
}
TEST(MergeBlocksReductionPassTest, MergeWithOpPhi) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
OpName %10 "y"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%10 = OpVariable %7 Function
OpStore %8 %9
%11 = OpLoad %6 %8
OpBranch %12
%12 = OpLabel
%13 = OpPhi %6 %11 %5
OpStore %10 %13
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, shader, kReduceAssembleOption);
const auto ops =
MergeBlocksReductionOpportunityFinder().GetAvailableOpportunities(
spirv-reduce: Support reducing a specific function (#3774) Motivated by integrating spirv-reduce into spirv-fuzz, so that an added function can be made smaller during shrinking, this adds support in spirv-reduce for asking reduction to be restricted to the instructions of a single specified function.
2020-09-11 05:29:43 +00:00
context.get(), 0);
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
ASSERT_EQ(1, ops.size());
ASSERT_TRUE(ops[0]->PreconditionHolds());
ops[0]->TryToApply();
std::string after = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 310
OpName %4 "main"
OpName %8 "x"
OpName %10 "y"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeInt 32 1
%7 = OpTypePointer Function %6
%9 = OpConstant %6 1
%4 = OpFunction %2 None %3
%5 = OpLabel
%8 = OpVariable %7 Function
%10 = OpVariable %7 Function
OpStore %8 %9
%11 = OpLoad %6 %8
OpStore %10 %11
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after, context.get());
}
Fix merge blocks opportunity to check if still enabled (#2370) Fix MergeBlocksReductionOpportunity so it checks whether it is still enabled Fixes #2369. Added tests.
2019-02-11 21:26:37 +00:00
void MergeBlocksReductionPassTest_LoopReturn_Helper(bool reverse) {
// A merge block opportunity stores a block that can be merged with its
// predecessor.
// Given blocks A -> B -> C:
// This test demonstrates how merging B->C can invalidate
// the opportunity of merging A->B, and vice-versa. E.g.
// B->C are merged: B is now terminated with OpReturn.
// A->B can now no longer be merged because A is a loop header, which
// cannot be terminated with OpReturn.
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %2 "main"
OpExecutionMode %2 OriginUpperLeft
OpSource ESSL 310
OpName %2 "main"
%3 = OpTypeVoid
%4 = OpTypeFunction %3
%5 = OpTypeInt 32 1
%6 = OpTypePointer Function %5
%7 = OpTypeBool
%8 = OpConstantFalse %7
%2 = OpFunction %3 None %4
%9 = OpLabel
OpBranch %10
%10 = OpLabel ; A (loop header)
OpLoopMerge %13 %12 None
OpBranch %11
%12 = OpLabel ; (unreachable continue block)
OpBranch %10
%11 = OpLabel ; B
OpBranch %15
%15 = OpLabel ; C
OpReturn
%13 = OpLabel ; (unreachable merge block)
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, shader, kReduceAssembleOption);
ASSERT_NE(context.get(), nullptr);
auto opportunities =
MergeBlocksReductionOpportunityFinder().GetAvailableOpportunities(
spirv-reduce: Support reducing a specific function (#3774) Motivated by integrating spirv-reduce into spirv-fuzz, so that an added function can be made smaller during shrinking, this adds support in spirv-reduce for asking reduction to be restricted to the instructions of a single specified function.
2020-09-11 05:29:43 +00:00
context.get(), 0);
Fix merge blocks opportunity to check if still enabled (#2370) Fix MergeBlocksReductionOpportunity so it checks whether it is still enabled Fixes #2369. Added tests.
2019-02-11 21:26:37 +00:00
// A->B and B->C
ASSERT_EQ(opportunities.size(), 2);
// Test applying opportunities in both orders.
if (reverse) {
std::reverse(opportunities.begin(), opportunities.end());
}
size_t num_applied = 0;
for (auto& ri : opportunities) {
if (ri->PreconditionHolds()) {
ri->TryToApply();
++num_applied;
}
}
// Only 1 opportunity can be applied, as both disable each other.
ASSERT_EQ(num_applied, 1);
std::string after = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %2 "main"
OpExecutionMode %2 OriginUpperLeft
OpSource ESSL 310
OpName %2 "main"
%3 = OpTypeVoid
%4 = OpTypeFunction %3
%5 = OpTypeInt 32 1
%6 = OpTypePointer Function %5
%7 = OpTypeBool
%8 = OpConstantFalse %7
%2 = OpFunction %3 None %4
%9 = OpLabel
OpBranch %10
%10 = OpLabel ; A-B (loop header)
OpLoopMerge %13 %12 None
OpBranch %15
%12 = OpLabel ; (unreachable continue block)
OpBranch %10
%15 = OpLabel ; C
OpReturn
%13 = OpLabel ; (unreachable merge block)
OpReturn
OpFunctionEnd
)";
// The only difference is the labels.
std::string after_reversed = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %2 "main"
OpExecutionMode %2 OriginUpperLeft
OpSource ESSL 310
OpName %2 "main"
%3 = OpTypeVoid
%4 = OpTypeFunction %3
%5 = OpTypeInt 32 1
%6 = OpTypePointer Function %5
%7 = OpTypeBool
%8 = OpConstantFalse %7
%2 = OpFunction %3 None %4
%9 = OpLabel
OpBranch %10
%10 = OpLabel ; A (loop header)
OpLoopMerge %13 %12 None
OpBranch %11
%12 = OpLabel ; (unreachable continue block)
OpBranch %10
%11 = OpLabel ; B-C
OpReturn
%13 = OpLabel ; (unreachable merge block)
OpReturn
OpFunctionEnd
)";
CheckEqual(env, reverse ? after_reversed : after, context.get());
}
TEST(MergeBlocksReductionPassTest, LoopReturn) {
MergeBlocksReductionPassTest_LoopReturn_Helper(false);
}
TEST(MergeBlocksReductionPassTest, LoopReturnReverse) {
MergeBlocksReductionPassTest_LoopReturn_Helper(true);
}
spirv-reduce: Allow merging unreachable blocks (#4303) This change allows the reducer to merge together blocks even when they are unreachable, but keeps the restriction of reachability in place for the optimizer. Fixes #4302.
2021-06-28 22:05:30 +00:00
TEST(MergeBlocksReductionPassTest, MergeUnreachable) {
std::string shader = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 320
OpName %4 "main"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%11 = OpTypeBool
%12 = OpConstantFalse %11
%4 = OpFunction %2 None %3
%5 = OpLabel
OpReturn
%9 = OpLabel
OpBranch %100
%100 = OpLabel
OpReturn
OpFunctionEnd
)";
const auto env = SPV_ENV_UNIVERSAL_1_3;
const auto consumer = nullptr;
const auto context =
BuildModule(env, consumer, shader, kReduceAssembleOption);
const auto ops =
MergeBlocksReductionOpportunityFinder().GetAvailableOpportunities(
context.get(), 0);
ASSERT_EQ(1, ops.size());
ASSERT_TRUE(ops[0]->PreconditionHolds());
ops[0]->TryToApply();
std::string after = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main"
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 320
OpName %4 "main"
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%11 = OpTypeBool
%12 = OpConstantFalse %11
%4 = OpFunction %2 None %3
%5 = OpLabel
OpReturn
%9 = OpLabel
OpReturn
OpFunctionEnd
)";
CheckEqual(env, after, context.get());
}
Merge blocks in reducer (#2353) Fixes #2120 Enhanced the reducer so that it can merge blocks together, leveraging the functionality extracted from the block_merge pass in the optimizer.
2019-02-01 14:56:54 +00:00
} // namespace
} // namespace reduce
} // namespace spvtools
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