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author | Kazu Hirata <kazu@google.com> | 2023-01-24 22:10:02 -0800 |
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committer | Kazu Hirata <kazu@google.com> | 2023-01-24 22:10:03 -0800 |
commit | d5248a46faed9071adffc65f82cac9bc0769b882 (patch) | |
tree | 39758a58ad5408a3720cca36c3f3e62ffc99eb5b | |
parent | b3de316420374536def0cc3bfb7d317db9fc830c (diff) | |
download | llvm-d5248a46faed9071adffc65f82cac9bc0769b882.tar.gz |
[SystemZ] Use llvm::bit_floor (NFC)
If x is known to be nonzero, findLastSet(x) returns the index of the
highest set bit counting from the LSB, so 1 << findLastSet(x) is the
same as llvm::bit_floor(x).
-rw-r--r-- | llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.cpp b/llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.cpp index 20bab8991144..4eb58e27f7ad 100644 --- a/llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.cpp +++ b/llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.cpp @@ -108,7 +108,7 @@ SDValue SystemZSelectionDAGInfo::EmitTargetCodeForMemset( if (ByteVal == 0 || ByteVal == 255 ? Bytes <= 16 && llvm::popcount(Bytes) <= 2 : Bytes <= 4) { - unsigned Size1 = Bytes == 16 ? 8 : 1 << findLastSet(Bytes); + unsigned Size1 = Bytes == 16 ? 8 : llvm::bit_floor(Bytes); unsigned Size2 = Bytes - Size1; SDValue Chain1 = memsetStore(DAG, DL, Chain, Dst, ByteVal, Size1, Alignment, DstPtrInfo); |