1 #include "llvm/Support/BlockFrequency.h"
2 #include "llvm/Support/BranchProbability.h"
3 #include "llvm/Support/DataTypes.h"
4 #include "gtest/gtest.h"
11 TEST(BlockFrequencyTest, OneToZero) {
12 BlockFrequency Freq(1);
13 BranchProbability Prob(UINT32_MAX - 1, UINT32_MAX);
15 EXPECT_EQ(Freq.getFrequency(), 0u);
18 TEST(BlockFrequencyTest, OneToOne) {
19 BlockFrequency Freq(1);
20 BranchProbability Prob(UINT32_MAX, UINT32_MAX);
22 EXPECT_EQ(Freq.getFrequency(), 1u);
25 TEST(BlockFrequencyTest, ThreeToOne) {
26 BlockFrequency Freq(3);
27 BranchProbability Prob(3000000, 9000000);
29 EXPECT_EQ(Freq.getFrequency(), 1u);
32 TEST(BlockFrequencyTest, MaxToHalfMax) {
33 BlockFrequency Freq(UINT64_MAX);
34 BranchProbability Prob(UINT32_MAX / 2, UINT32_MAX);
36 EXPECT_EQ(Freq.getFrequency(), 9223372034707292159ULL);
39 TEST(BlockFrequencyTest, BigToBig) {
40 const uint64_t Big = 387246523487234346LL;
41 const uint32_t P = 123456789;
42 BlockFrequency Freq(Big);
43 BranchProbability Prob(P, P);
45 EXPECT_EQ(Freq.getFrequency(), Big);
48 TEST(BlockFrequencyTest, MaxToMax) {
49 BlockFrequency Freq(UINT64_MAX);
50 BranchProbability Prob(UINT32_MAX, UINT32_MAX);
52 EXPECT_EQ(Freq.getFrequency(), UINT64_MAX);
55 TEST(BlockFrequencyTest, ProbabilityCompare) {
56 BranchProbability A(4, 5);
57 BranchProbability B(4U << 29, 5U << 29);
58 BranchProbability C(3, 4);
74 BranchProbability BigZero(0, UINT32_MAX);
75 BranchProbability BigOne(UINT32_MAX, UINT32_MAX);
76 EXPECT_FALSE(BigZero == BigOne);
77 EXPECT_TRUE(BigZero != BigOne);
78 EXPECT_TRUE(BigZero < BigOne);
79 EXPECT_FALSE(BigZero > BigOne);
80 EXPECT_TRUE(BigZero <= BigOne);
81 EXPECT_FALSE(BigZero >= BigOne);