[llvm] 1fe6a8a - [X86] Use llvm::isOneConstant (NFC)

[Kazu Hirata via llvm-commits]

Author: Kazu Hirata
Date: 2023-03-22T00:25:13-07:00
New Revision: 1fe6a8a584fe7f377a61f56af57fc1f3e8b3f82a

URL: https://github.com/llvm/llvm-project/commit/1fe6a8a584fe7f377a61f56af57fc1f3e8b3f82a
DIFF: https://github.com/llvm/llvm-project/commit/1fe6a8a584fe7f377a61f56af57fc1f3e8b3f82a.diff

LOG: [X86] Use llvm::isOneConstant (NFC)

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86ISelLowering.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index e9a069b7295e1..a491ba84bf705 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -56700,11 +56700,9 @@ static SDValue combineScalarToVector(SDNode *N, SelectionDAG &DAG) {
   // This occurs frequently in our masked scalar intrinsic code and our
   // floating point select lowering with AVX512.
   // TODO: SimplifyDemandedBits instead?
-  if (VT == MVT::v1i1 && Src.getOpcode() == ISD::AND && Src.hasOneUse())
-    if (auto *C = dyn_cast<ConstantSDNode>(Src.getOperand(1)))
-      if (C->getAPIntValue().isOne())
-        return DAG.getNode(ISD::SCALAR_TO_VECTOR, DL, MVT::v1i1,
-                           Src.getOperand(0));
+  if (VT == MVT::v1i1 && Src.getOpcode() == ISD::AND && Src.hasOneUse() &&
+      isOneConstant(Src.getOperand(1)))
+    return DAG.getNode(ISD::SCALAR_TO_VECTOR, DL, MVT::v1i1, Src.getOperand(0));
 
   // Combine scalar_to_vector of an extract_vector_elt into an extract_subvec.
   if (VT == MVT::v1i1 && Src.getOpcode() == ISD::EXTRACT_VECTOR_ELT &&