diff options
| -rw-r--r-- | unittests/VMCore/IRBuilderTest.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/unittests/VMCore/IRBuilderTest.cpp b/unittests/VMCore/IRBuilderTest.cpp index 9f26936df4..0f3e48d76c 100644 --- a/unittests/VMCore/IRBuilderTest.cpp +++ b/unittests/VMCore/IRBuilderTest.cpp @@ -31,6 +31,8 @@ protected: /*isVarArg=*/false); F = Function::Create(FTy, Function::ExternalLinkage, "", M.get()); BB = BasicBlock::Create(getGlobalContext(), "", F); + GV = new GlobalVariable(Type::getFloatTy(getGlobalContext()), true, + GlobalValue::ExternalLinkage); } virtual void TearDown() { @@ -41,6 +43,7 @@ protected: OwningPtr<Module> M; Function *F; BasicBlock *BB; + GlobalVariable *GV; }; TEST_F(IRBuilderTest, Lifetime) { @@ -108,4 +111,59 @@ TEST_F(IRBuilderTest, GetIntTy) { EXPECT_EQ(IntPtrTy, IntegerType::get(getGlobalContext(), IntPtrBitSize)); } +TEST_F(IRBuilderTest, FastMathFlags) { + IRBuilder<> Builder(BB); + Value *F; + Instruction *FDiv, *FAdd; + + F = Builder.CreateLoad(GV); + F = Builder.CreateFAdd(F, F); + + EXPECT_FALSE(Builder.GetFastMathFlags().any()); + ASSERT_TRUE(isa<Instruction>(F)); + FAdd = cast<Instruction>(F); + EXPECT_FALSE(FAdd->hasNoNaNs()); + + FastMathFlags FMF; + Builder.SetFastMathFlags(FMF); + + F = Builder.CreateFAdd(F, F); + EXPECT_FALSE(Builder.GetFastMathFlags().any()); + + FMF.UnsafeAlgebra = true; + Builder.SetFastMathFlags(FMF); + + F = Builder.CreateFAdd(F, F); + EXPECT_TRUE(Builder.GetFastMathFlags().any()); + ASSERT_TRUE(isa<Instruction>(F)); + FAdd = cast<Instruction>(F); + EXPECT_TRUE(FAdd->hasNoNaNs()); + + F = Builder.CreateFDiv(F, F); + EXPECT_TRUE(Builder.GetFastMathFlags().any()); + EXPECT_TRUE(Builder.GetFastMathFlags().UnsafeAlgebra); + ASSERT_TRUE(isa<Instruction>(F)); + FDiv = cast<Instruction>(F); + EXPECT_TRUE(FDiv->hasAllowReciprocal()); + + Builder.ClearFastMathFlags(); + + F = Builder.CreateFDiv(F, F); + ASSERT_TRUE(isa<Instruction>(F)); + FDiv = cast<Instruction>(F); + EXPECT_FALSE(FDiv->hasAllowReciprocal()); + + FMF.clear(); + FMF.AllowReciprocal = true; + Builder.SetFastMathFlags(FMF); + + F = Builder.CreateFDiv(F, F); + EXPECT_TRUE(Builder.GetFastMathFlags().any()); + EXPECT_TRUE(Builder.GetFastMathFlags().AllowReciprocal); + ASSERT_TRUE(isa<Instruction>(F)); + FDiv = cast<Instruction>(F); + EXPECT_TRUE(FDiv->hasAllowReciprocal()); + +} + } |