Spirv-fuzz: Achieve coverage of TransformationAddDeadBlock test (#4306)
Fixes #4290, by enhancing the test to get 100% of the lines covered.
diff --git a/test/fuzz/transformation_add_dead_block_test.cpp b/test/fuzz/transformation_add_dead_block_test.cpp
index 687f00c..3c9e6b4 100644
--- a/test/fuzz/transformation_add_dead_block_test.cpp
+++ b/test/fuzz/transformation_add_dead_block_test.cpp
@@ -142,6 +142,99 @@
ASSERT_TRUE(IsEqual(env, variant_shader, context.get()));
}
+TEST(TransformationAddDeadBlockTest, ApplicableWithFalseCondition) {
+ std::string reference_shader = R"(
+ OpCapability Shader
+ %1 = OpExtInstImport "GLSL.std.450"
+ OpMemoryModel Logical GLSL450
+ OpEntryPoint Fragment %6 "main"
+ OpExecutionMode %6 OriginUpperLeft
+
+; Types
+ %2 = OpTypeBool
+ %3 = OpTypeVoid
+ %4 = OpTypeFunction %3
+
+; Constants
+ %5 = OpConstantFalse %2
+
+; main function
+ %6 = OpFunction %3 None %4
+ %7 = OpLabel
+ OpSelectionMerge %11 None
+ OpBranchConditional %5 %8 %9
+ %8 = OpLabel
+ OpBranch %10
+ %9 = OpLabel
+ OpBranch %10
+ %10 = OpLabel
+ OpBranch %11
+ %11 = OpLabel
+ OpBranch %13
+ %12 = OpLabel
+ OpBranch %13
+ %13 = OpLabel
+ OpReturn
+ OpFunctionEnd
+ )";
+ const auto env = SPV_ENV_UNIVERSAL_1_4;
+ const auto consumer = nullptr;
+ const auto context =
+ BuildModule(env, consumer, reference_shader, kFuzzAssembleOption);
+ spvtools::ValidatorOptions validator_options;
+ ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
+ kConsoleMessageConsumer));
+ TransformationContext transformation_context(
+ MakeUnique<FactManager>(context.get()), validator_options);
+ auto transformation = TransformationAddDeadBlock(14, 11, false);
+
+ ASSERT_TRUE(
+ transformation.IsApplicable(context.get(), transformation_context));
+ ApplyAndCheckFreshIds(transformation, context.get(), &transformation_context);
+
+ std::string variant_shader = R"(
+ OpCapability Shader
+ %1 = OpExtInstImport "GLSL.std.450"
+ OpMemoryModel Logical GLSL450
+ OpEntryPoint Fragment %6 "main"
+ OpExecutionMode %6 OriginUpperLeft
+
+; Types
+ %2 = OpTypeBool
+ %3 = OpTypeVoid
+ %4 = OpTypeFunction %3
+
+; Constants
+ %5 = OpConstantFalse %2
+
+; main function
+ %6 = OpFunction %3 None %4
+ %7 = OpLabel
+ OpSelectionMerge %11 None
+ OpBranchConditional %5 %8 %9
+ %8 = OpLabel
+ OpBranch %10
+ %9 = OpLabel
+ OpBranch %10
+ %10 = OpLabel
+ OpBranch %11
+ %11 = OpLabel
+ OpSelectionMerge %13 None
+ OpBranchConditional %5 %14 %13
+ %14 = OpLabel
+ OpBranch %13
+ %12 = OpLabel
+ OpBranch %13
+ %13 = OpLabel
+ OpReturn
+ OpFunctionEnd
+ )";
+
+ ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(context.get(), validator_options,
+ kConsoleMessageConsumer));
+ ASSERT_TRUE(IsEqual(env, variant_shader, context.get()));
+}
+
TEST(TransformationAddDeadBlockTest, TargetBlockMustNotBeSelectionMerge) {
std::string shader = R"(
OpCapability Shader
