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| author | Dan Gohman <gohman@apple.com> | 2008-04-01 20:56:18 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-04-01 20:56:18 +0000 |
| commit | cb9f8f6e4e45b2e41260f9b825620a9609ec2e3b (patch) | |
| tree | 9f9da936cad597a06249da258309050de4416a33 | |
| parent | bf1a7c64409a056cbf0d6081f66585ae77e5a416 (diff) | |
| download | bcm5719-llvm-cb9f8f6e4e45b2e41260f9b825620a9609ec2e3b.tar.gz bcm5719-llvm-cb9f8f6e4e45b2e41260f9b825620a9609ec2e3b.zip | |
Don't use __bzero for memset if the second argument isn't zero.
llvm-svn: 49050
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index f4ec6afd540..162979b8039 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -4562,8 +4562,9 @@ SDOperand X86TargetLowering::LowerMEMSET(SDOperand Op, SelectionDAG &DAG) { (I && I->getValue() > Subtarget->getMaxInlineSizeThreshold())) { // Check to see if there is a specialized entry-point for memory zeroing. - const char *bzeroEntry = Subtarget->getBZeroEntry(); ConstantSDNode *V = dyn_cast<ConstantSDNode>(Op.getOperand(2)); + const char *bzeroEntry = + V && V->isNullValue() ? Subtarget->getBZeroEntry() : 0; MVT::ValueType IntPtr = getPointerTy(); const Type *IntPtrTy = getTargetData()->getIntPtrType(); |
