mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-20 12:00:05 +00:00
fcb22ecf0f
Adds a virtual method, GetFreshIds(), to Transformation. Every transformation uses this to indicate which ids in its protobuf message are fresh ids. This means that when replaying a sequence of transformations the replayer can obtain a smallest id that is not in use by the module already and that will not be used by any transformation by necessity. Ids greater than or equal to this id can be used as overflow ids. Fixes #3851.
293 lines
9.7 KiB
C++
293 lines
9.7 KiB
C++
// Copyright (c) 2020 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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#include "source/fuzz/transformation_add_loop_preheader.h"
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#include "test/fuzz/fuzz_test_util.h"
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namespace spvtools {
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namespace fuzz {
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namespace {
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TEST(TransformationAddLoopPreheaderTest, SimpleTest) {
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std::string shader = 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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeBool
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%7 = OpConstantFalse %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpSelectionMerge %10 None
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OpBranchConditional %7 %8 %9
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%8 = OpLabel
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OpBranch %10
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%9 = OpLabel
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OpBranch %10
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%10 = OpLabel
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OpLoopMerge %12 %11 None
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OpBranch %11
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%11 = OpLabel
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OpBranchConditional %7 %10 %12
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%12 = OpLabel
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OpLoopMerge %14 %13 None
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OpBranch %13
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%13 = OpLabel
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OpBranchConditional %7 %14 %12
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%15 = OpLabel
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OpLoopMerge %17 %16 None
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OpBranch %16
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%16 = OpLabel
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OpBranchConditional %7 %15 %17
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%17 = OpLabel
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OpBranch %14
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%14 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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ASSERT_TRUE(IsValid(env, context.get()));
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// %9 is not a loop header
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ASSERT_FALSE(TransformationAddLoopPreheader(9, 15, {}).IsApplicable(
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context.get(), transformation_context));
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// The id %12 is not fresh
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ASSERT_FALSE(TransformationAddLoopPreheader(10, 12, {})
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.IsApplicable(context.get(), transformation_context));
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// Loop header %15 is not reachable (the only predecessor is the back-edge
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// block)
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ASSERT_FALSE(TransformationAddLoopPreheader(15, 100, {})
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.IsApplicable(context.get(), transformation_context));
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auto transformation1 = TransformationAddLoopPreheader(10, 20, {});
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ASSERT_TRUE(
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transformation1.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation1, context.get(),
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&transformation_context);
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auto transformation2 = TransformationAddLoopPreheader(12, 21, {});
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ASSERT_TRUE(
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transformation2.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation2, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_transformations = 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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeBool
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%7 = OpConstantFalse %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpSelectionMerge %20 None
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OpBranchConditional %7 %8 %9
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%8 = OpLabel
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OpBranch %20
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%9 = OpLabel
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OpBranch %20
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%20 = OpLabel
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OpBranch %10
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%10 = OpLabel
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OpLoopMerge %21 %11 None
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OpBranch %11
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%11 = OpLabel
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OpBranchConditional %7 %10 %21
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%21 = OpLabel
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OpBranch %12
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%12 = OpLabel
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OpLoopMerge %14 %13 None
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OpBranch %13
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%13 = OpLabel
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OpBranchConditional %7 %14 %12
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%15 = OpLabel
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OpLoopMerge %17 %16 None
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OpBranch %16
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%16 = OpLabel
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OpBranchConditional %7 %15 %17
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%17 = OpLabel
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OpBranch %14
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%14 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_transformations, context.get()));
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}
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TEST(TransformationAddLoopPreheaderTest, OpPhi) {
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std::string shader = 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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeBool
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%7 = OpConstantFalse %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%20 = OpCopyObject %6 %7
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OpBranch %8
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%8 = OpLabel
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%31 = OpPhi %6 %20 %5 %21 %9
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OpLoopMerge %10 %9 None
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OpBranch %9
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%9 = OpLabel
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%21 = OpCopyObject %6 %7
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OpBranchConditional %7 %8 %10
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%10 = OpLabel
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OpSelectionMerge %13 None
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OpBranchConditional %7 %11 %12
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%11 = OpLabel
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%22 = OpCopyObject %6 %7
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OpBranch %13
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%12 = OpLabel
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%23 = OpCopyObject %6 %7
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OpBranch %13
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%13 = OpLabel
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%32 = OpPhi %6 %22 %11 %23 %12 %24 %14
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%33 = OpPhi %6 %7 %11 %7 %12 %24 %14
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OpLoopMerge %15 %14 None
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OpBranch %14
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%14 = OpLabel
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%24 = OpCopyObject %6 %7
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OpBranchConditional %7 %13 %15
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%15 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_5;
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const auto consumer = nullptr;
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const auto context = BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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ASSERT_TRUE(IsValid(env, context.get()));
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auto transformation1 = TransformationAddLoopPreheader(8, 40, {});
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ASSERT_TRUE(
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transformation1.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation1, context.get(),
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&transformation_context);
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// Not enough ids for the OpPhi instructions are given
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ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {})
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.IsApplicable(context.get(), transformation_context));
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// Not enough ids for the OpPhi instructions are given
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ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {42})
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.IsApplicable(context.get(), transformation_context));
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// One of the ids is not fresh
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ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {31, 42})
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.IsApplicable(context.get(), transformation_context));
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// One of the ids is repeated
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ASSERT_FALSE(TransformationAddLoopPreheader(13, 41, {41, 42})
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.IsApplicable(context.get(), transformation_context));
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auto transformation2 = TransformationAddLoopPreheader(13, 41, {42, 43});
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ASSERT_TRUE(
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transformation2.IsApplicable(context.get(), transformation_context));
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ApplyAndCheckFreshIds(transformation2, context.get(),
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&transformation_context);
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ASSERT_TRUE(IsValid(env, context.get()));
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std::string after_transformations = 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 %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeBool
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%7 = OpConstantFalse %6
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%20 = OpCopyObject %6 %7
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OpBranch %40
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%40 = OpLabel
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OpBranch %8
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%8 = OpLabel
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%31 = OpPhi %6 %20 %40 %21 %9
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OpLoopMerge %10 %9 None
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OpBranch %9
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%9 = OpLabel
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%21 = OpCopyObject %6 %7
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OpBranchConditional %7 %8 %10
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%10 = OpLabel
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OpSelectionMerge %41 None
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OpBranchConditional %7 %11 %12
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%11 = OpLabel
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%22 = OpCopyObject %6 %7
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OpBranch %41
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%12 = OpLabel
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%23 = OpCopyObject %6 %7
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OpBranch %41
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%41 = OpLabel
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%42 = OpPhi %6 %22 %11 %23 %12
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%43 = OpPhi %6 %7 %11 %7 %12
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OpBranch %13
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%13 = OpLabel
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%32 = OpPhi %6 %42 %41 %24 %14
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%33 = OpPhi %6 %43 %41 %24 %14
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OpLoopMerge %15 %14 None
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OpBranch %14
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%14 = OpLabel
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%24 = OpCopyObject %6 %7
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OpBranchConditional %7 %13 %15
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%15 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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ASSERT_TRUE(IsEqual(env, after_transformations, context.get()));
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}
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} // namespace
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} // namespace fuzz
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} // namespace spvtools
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