diff options
| author | Benjamin Kramer <benny.kra@googlemail.com> | 2011-10-24 13:50:56 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2011-10-24 13:50:56 +0000 |
| commit | 812da49172d19efed8dadf4edc0f17c6a29e7f10 (patch) | |
| tree | 10963e766905a3e0e04c1f15c71538bbddc9bf25 /llvm/unittests/Support/BlockFrequencyTest.cpp | |
| parent | 7111f4564cf32410227255e7817c486d30d49fd7 (diff) | |
| download | bcm5719-llvm-812da49172d19efed8dadf4edc0f17c6a29e7f10.tar.gz bcm5719-llvm-812da49172d19efed8dadf4edc0f17c6a29e7f10.zip | |
Implement comparison operators for BranchProbability in a way that can't overflow INT64_MAX.
Add a test case for the edge case that triggers this. Thanks to Chandler for bringing this to my attention.
llvm-svn: 142794
Diffstat (limited to 'llvm/unittests/Support/BlockFrequencyTest.cpp')
| -rw-r--r-- | llvm/unittests/Support/BlockFrequencyTest.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/unittests/Support/BlockFrequencyTest.cpp b/llvm/unittests/Support/BlockFrequencyTest.cpp index ac3cedf1869..df256424b82 100644 --- a/llvm/unittests/Support/BlockFrequencyTest.cpp +++ b/llvm/unittests/Support/BlockFrequencyTest.cpp @@ -71,6 +71,15 @@ TEST(BlockFrequencyTest, ProbabilityCompare) { EXPECT_TRUE(B > C); EXPECT_FALSE(B <= C); EXPECT_TRUE(B >= C); + + BranchProbability BigZero(0, UINT32_MAX); + BranchProbability BigOne(UINT32_MAX, UINT32_MAX); + EXPECT_FALSE(BigZero == BigOne); + EXPECT_TRUE(BigZero != BigOne); + EXPECT_TRUE(BigZero < BigOne); + EXPECT_FALSE(BigZero > BigOne); + EXPECT_TRUE(BigZero <= BigOne); + EXPECT_FALSE(BigZero >= BigOne); } } |
