| commit | cb559c1270a773de2c97c99700dcd5456f24a732 | [log] [tgz] |
|---|---|---|
| author | Evan Cheng <evan.cheng@apple.com> | Sun May 22 18:25:30 2011 +0000 |
| committer | Evan Cheng <evan.cheng@apple.com> | Sun May 22 18:25:30 2011 +0000 |
| tree | fad3556b5d6c6c1595c2c0ef1ee942e565bfb355 | |
| parent | 1add46ddfa38f23669cb02de342fdb59a8709245 [diff] [blame] |
Teach ValueTracking about x86 crc32 intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131861 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 8f18dd2..7b7e39f 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/lib/Analysis/ValueTracking.cpp
@@ -670,6 +670,10 @@ 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;