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Fixed bad test case 

llvm-svn: 168815
This commit is contained in:
Michael Ilseman 2012-11-28 21:19:52 +00:00
parent 018530268d
commit 1833e000a3
1 changed files with 55 additions and 0 deletions
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55
llvm/unittests/VMCore/IRBuilderTest.cpp
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@ -166,4 +166,59 @@ TEST_F(IRBuilderTest, FastMathFlags) {
} }
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());
}
} }