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| author | Evan Cheng <evan.cheng@apple.com> | 2011-05-22 18:25:30 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-05-22 18:25:30 +0000 |
| commit | 2a746bfe368e839439f5d8942fdd14ed6bd8a6f5 (patch) | |
| tree | 3182c75c70e9533702f591a2b12d5e1d650ec90c /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 7c99f19d9f5919dd4809aa5a5c84f5ff7807aafd (diff) | |
| download | llvm-2a746bfe368e839439f5d8942fdd14ed6bd8a6f5.zip llvm-2a746bfe368e839439f5d8942fdd14ed6bd8a6f5.tar.gz llvm-2a746bfe368e839439f5d8942fdd14ed6bd8a6f5.tar.bz2 | |
Teach ValueTracking about x86 crc32 intrinsics.
llvm-svn: 131861
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index 8f18dd2..7b7e39f 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -670,6 +670,10 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask, KnownZero = APInt::getHighBitsSet(BitWidth, BitWidth - LowBits); break; } + case Intrinsic::x86_sse42_crc64_8: + case Intrinsic::x86_sse42_crc64_64: + KnownZero = APInt::getHighBitsSet(64, 32); + break; } } break; |