diff options
Diffstat (limited to 'llvm/unittests/Support/MathExtrasTest.cpp')
| -rw-r--r-- | llvm/unittests/Support/MathExtrasTest.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/unittests/Support/MathExtrasTest.cpp b/llvm/unittests/Support/MathExtrasTest.cpp index cf055c6..b9ed0df 100644 --- a/llvm/unittests/Support/MathExtrasTest.cpp +++ b/llvm/unittests/Support/MathExtrasTest.cpp @@ -180,6 +180,18 @@ TEST(MathExtras, isShiftedMask_32) { EXPECT_TRUE(isShiftedMask_32(0xf0000000)); EXPECT_TRUE(isShiftedMask_32(0xffff0000)); EXPECT_TRUE(isShiftedMask_32(0xff << 1)); + + unsigned MaskIdx, MaskLen; + EXPECT_FALSE(isShiftedMask_32(0x01010101, MaskIdx, MaskLen)); + EXPECT_TRUE(isShiftedMask_32(0xf0000000, MaskIdx, MaskLen)); + EXPECT_EQ(28, MaskIdx); + EXPECT_EQ(4, MaskLen); + EXPECT_TRUE(isShiftedMask_32(0xffff0000, MaskIdx, MaskLen)); + EXPECT_EQ(16, MaskIdx); + EXPECT_EQ(16, MaskLen); + EXPECT_TRUE(isShiftedMask_32(0xff << 1, MaskIdx, MaskLen)); + EXPECT_EQ(1, MaskIdx); + EXPECT_EQ(8, MaskLen); } TEST(MathExtras, isShiftedMask_64) { @@ -187,6 +199,18 @@ TEST(MathExtras, isShiftedMask_64) { EXPECT_TRUE(isShiftedMask_64(0xf000000000000000ull)); EXPECT_TRUE(isShiftedMask_64(0xffff000000000000ull)); EXPECT_TRUE(isShiftedMask_64(0xffull << 55)); + + unsigned MaskIdx, MaskLen; + EXPECT_FALSE(isShiftedMask_64(0x0101010101010101ull, MaskIdx, MaskLen)); + EXPECT_TRUE(isShiftedMask_64(0xf000000000000000ull, MaskIdx, MaskLen)); + EXPECT_EQ(60, MaskIdx); + EXPECT_EQ(4, MaskLen); + EXPECT_TRUE(isShiftedMask_64(0xffff000000000000ull, MaskIdx, MaskLen)); + EXPECT_EQ(48, MaskIdx); + EXPECT_EQ(16, MaskLen); + EXPECT_TRUE(isShiftedMask_64(0xffull << 55, MaskIdx, MaskLen)); + EXPECT_EQ(55, MaskIdx); + EXPECT_EQ(8, MaskLen); } TEST(MathExtras, isPowerOf2_32) { |