1 #include "llvm/Support/DataTypes.h"
2 #include "llvm/Support/BlockFrequency.h"
3 #include "llvm/Support/BranchProbability.h"
5 #include "gtest/gtest.h"
12 TEST(BlockFrequencyTest, OneToZero) {
13 BlockFrequency Freq(1);
14 BranchProbability Prob(UINT32_MAX - 1, UINT32_MAX);
16 EXPECT_EQ(Freq.getFrequency(), 0u);
19 TEST(BlockFrequencyTest, OneToOne) {
20 BlockFrequency Freq(1);
21 BranchProbability Prob(UINT32_MAX, UINT32_MAX);
23 EXPECT_EQ(Freq.getFrequency(), 1u);
26 TEST(BlockFrequencyTest, ThreeToOne) {
27 BlockFrequency Freq(3);
28 BranchProbability Prob(3000000, 9000000);
30 EXPECT_EQ(Freq.getFrequency(), 1u);
33 TEST(BlockFrequencyTest, MaxToHalfMax) {
34 BlockFrequency Freq(UINT64_MAX);
35 BranchProbability Prob(UINT32_MAX / 2, UINT32_MAX);
37 EXPECT_EQ(Freq.getFrequency(), 9223372034707292159LLu);
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);
46 EXPECT_EQ(Freq.getFrequency(), Big);
49 TEST(BlockFrequencyTest, MaxToMax) {
50 BlockFrequency Freq(UINT64_MAX);
51 BranchProbability Prob(UINT32_MAX, UINT32_MAX);
53 EXPECT_EQ(Freq.getFrequency(), UINT64_MAX);
56 TEST(BlockFrequencyTest, ProbabilityCompare) {
57 BranchProbability A(4, 5);
58 BranchProbability B(4U << 29, 5U << 29);
59 BranchProbability C(3, 4);