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| author | Roman Lebedev <lebedev.ri@gmail.com> | 2019-10-25 18:17:48 +0300 |
|---|---|---|
| committer | Roman Lebedev <lebedev.ri@gmail.com> | 2019-10-25 18:20:00 +0300 |
| commit | 1cc8e1e1d7d78fc3f2185c5ba207cd21f227fa1c (patch) | |
| tree | 23ed419b7338aceb2b0b098502c476e27b1a061d /llvm/unittests/ADT/APIntTest.cpp | |
| parent | b2c184458e990c8faeffd5047e7086e4f7ff07a6 (diff) | |
| download | bcm5719-llvm-1cc8e1e1d7d78fc3f2185c5ba207cd21f227fa1c.tar.gz bcm5719-llvm-1cc8e1e1d7d78fc3f2185c5ba207cd21f227fa1c.zip | |
[APInt] Add saturating left-shift ops
Summary:
There are `*_ov()` functions already, so at least for consistency it may be good to also have saturating variants.
These may or may not be needed for `ConstantRange`'s `shlWithNoWrap()`
Reviewers: spatel, nikic
Reviewed By: nikic
Subscribers: hiraditya, dexonsmith, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69398
Diffstat (limited to 'llvm/unittests/ADT/APIntTest.cpp')
| -rw-r--r-- | llvm/unittests/ADT/APIntTest.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/APIntTest.cpp b/llvm/unittests/ADT/APIntTest.cpp index f45a4e6b52c..5130b9420d6 100644 --- a/llvm/unittests/ADT/APIntTest.cpp +++ b/llvm/unittests/ADT/APIntTest.cpp @@ -1215,6 +1215,23 @@ TEST(APIntTest, SaturatingMath) { EXPECT_EQ(APInt(8, -128), APInt(8, 25).smul_sat(APInt(8, -6))); EXPECT_EQ(APInt(8, 127), APInt(8, -25).smul_sat(APInt(8, -6))); EXPECT_EQ(APInt(8, 127), APInt(8, 25).smul_sat(APInt(8, 6))); + + EXPECT_EQ(APInt(8, 128), APInt(8, 4).ushl_sat(APInt(8, 5))); + EXPECT_EQ(APInt(8, 255), APInt(8, 4).ushl_sat(APInt(8, 6))); + EXPECT_EQ(APInt(8, 128), APInt(8, 1).ushl_sat(APInt(8, 7))); + EXPECT_EQ(APInt(8, 255), APInt(8, 1).ushl_sat(APInt(8, 8))); + EXPECT_EQ(APInt(8, 255), APInt(8, -128).ushl_sat(APInt(8, 2))); + EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, 2))); + EXPECT_EQ(APInt(8, 255), APInt(8, 64).ushl_sat(APInt(8, -2))); + + EXPECT_EQ(APInt(8, 64), APInt(8, 4).sshl_sat(APInt(8, 4))); + EXPECT_EQ(APInt(8, 127), APInt(8, 4).sshl_sat(APInt(8, 5))); + EXPECT_EQ(APInt(8, 127), APInt(8, 1).sshl_sat(APInt(8, 8))); + EXPECT_EQ(APInt(8, -64), APInt(8, -4).sshl_sat(APInt(8, 4))); + EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 5))); + EXPECT_EQ(APInt(8, -128), APInt(8, -4).sshl_sat(APInt(8, 6))); + EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 7))); + EXPECT_EQ(APInt(8, -128), APInt(8, -1).sshl_sat(APInt(8, 8))); } TEST(APIntTest, FromArray) { |
