1 #include "llvm/Support/DataTypes.h" 2 #include "llvm/Support/BlockFrequency.h" 3 #include "llvm/Support/BranchProbability.h" 4 5 #include "gtest/gtest.h" 6 #include <climits> 7 8 using namespace llvm; 9 10 namespace { 11 12 TEST(BlockFrequencyTest, OneToZero) { 13 BlockFrequency Freq(1); 14 BranchProbability Prob(UINT32_MAX - 1, UINT32_MAX); 15 Freq *= Prob; 16 EXPECT_EQ(Freq.getFrequency(), 0u); 17 } 18 19 TEST(BlockFrequencyTest, OneToOne) { 20 BlockFrequency Freq(1); 21 BranchProbability Prob(UINT32_MAX, UINT32_MAX); 22 Freq *= Prob; 23 EXPECT_EQ(Freq.getFrequency(), 1u); 24 } 25 26 TEST(BlockFrequencyTest, ThreeToOne) { 27 BlockFrequency Freq(3); 28 BranchProbability Prob(3000000, 9000000); 29 Freq *= Prob; 30 EXPECT_EQ(Freq.getFrequency(), 1u); 31 } 32 33 TEST(BlockFrequencyTest, MaxToHalfMax) { 34 BlockFrequency Freq(UINT64_MAX); 35 BranchProbability Prob(UINT32_MAX / 2, UINT32_MAX); 36 Freq *= Prob; 37 EXPECT_EQ(Freq.getFrequency(), 9223372034707292159LLu); 38 } 39 40 TEST(BlockFrequencyTest, BigToBig) { 41 const uint64_t Big = 387246523487234346LL; 42 const uint32_t P = 123456789; 43 BlockFrequency Freq(Big); 44 BranchProbability Prob(P, P); 45 Freq *= Prob; 46 EXPECT_EQ(Freq.getFrequency(), Big); 47 } 48 49 TEST(BlockFrequencyTest, MaxToMax) { 50 BlockFrequency Freq(UINT64_MAX); 51 BranchProbability Prob(UINT32_MAX, UINT32_MAX); 52 Freq *= Prob; 53 EXPECT_EQ(Freq.getFrequency(), UINT64_MAX); 54 } 55 56 } 57
