Revert r131664 and fix it in instcombine instead. rdar://9467055

llvm-svn: 131708

1 files changed, 0 insertions, 13 deletions

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 88f5d31f1d0..e5156f8d413 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -10939,19 +10939,6 @@ void X86TargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
     KnownZero |= APInt::getHighBitsSet(Mask.getBitWidth(),
                                        Mask.getBitWidth() - 1);
     break;
-
-  case ISD::INTRINSIC_WO_CHAIN: {
-    unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
-    switch (IntNo) {
-      default: break;
-      case Intrinsic::x86_sse42_crc64_8:
-      case Intrinsic::x86_sse42_crc64_64:
-        // crc32 with 64-bit destination zeros high 32-bit.
-        KnownZero |= APInt::getHighBitsSet(64, 32);
-        break;
-    }
-    break;
-  }
   }
 }