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| author | dim <dim@FreeBSD.org> | 2011-10-20 21:10:27 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2011-10-20 21:10:27 +0000 |
| commit | 7b3392326c40c3c20697816acae597ba7b3144eb (patch) | |
| tree | 2cbcf22585e99f8a87d12d5ff94f392c0d266819 /unittests/Support/BlockFrequencyTest.cpp | |
| parent | 1176aa52646fe641a4243a246aa7f960c708a274 (diff) | |
| download | FreeBSD-src-7b3392326c40c3c20697816acae597ba7b3144eb.zip FreeBSD-src-7b3392326c40c3c20697816acae597ba7b3144eb.tar.gz | |
Vendor import of llvm release_30 branch r142614:
http://llvm.org/svn/llvm-project/llvm/branches/release_30@142614
Diffstat (limited to 'unittests/Support/BlockFrequencyTest.cpp')
| -rw-r--r-- | unittests/Support/BlockFrequencyTest.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/unittests/Support/BlockFrequencyTest.cpp b/unittests/Support/BlockFrequencyTest.cpp new file mode 100644 index 0000000..edeea9b --- /dev/null +++ b/unittests/Support/BlockFrequencyTest.cpp @@ -0,0 +1,56 @@ +#include "llvm/Support/DataTypes.h" +#include "llvm/Support/BlockFrequency.h" +#include "llvm/Support/BranchProbability.h" + +#include "gtest/gtest.h" +#include <climits> + +using namespace llvm; + +namespace { + +TEST(BlockFrequencyTest, OneToZero) { + BlockFrequency Freq(1); + BranchProbability Prob(UINT32_MAX - 1, UINT32_MAX); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), 0u); +} + +TEST(BlockFrequencyTest, OneToOne) { + BlockFrequency Freq(1); + BranchProbability Prob(UINT32_MAX, UINT32_MAX); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), 1u); +} + +TEST(BlockFrequencyTest, ThreeToOne) { + BlockFrequency Freq(3); + BranchProbability Prob(3000000, 9000000); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), 1u); +} + +TEST(BlockFrequencyTest, MaxToHalfMax) { + BlockFrequency Freq(UINT64_MAX); + BranchProbability Prob(UINT32_MAX / 2, UINT32_MAX); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), 9223372034707292159LLu); +} + +TEST(BlockFrequencyTest, BigToBig) { + const uint64_t Big = 387246523487234346LL; + const uint32_t P = 123456789; + BlockFrequency Freq(Big); + BranchProbability Prob(P, P); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), Big); +} + +TEST(BlockFrequencyTest, MaxToMax) { + BlockFrequency Freq(UINT64_MAX); + BranchProbability Prob(UINT32_MAX, UINT32_MAX); + Freq *= Prob; + EXPECT_EQ(Freq.getFrequency(), UINT64_MAX); +} + +} |
