[llvm] 23b82bf - [X86] Add getTargetConstantPoolFromBasePtr helper. NFC.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2023-11-29T14:13:10Z
New Revision: 23b82bfdc2b6771231cc6a51e6aad9b48318cc1f

URL: https://github.com/llvm/llvm-project/commit/23b82bfdc2b6771231cc6a51e6aad9b48318cc1f
DIFF: https://github.com/llvm/llvm-project/commit/23b82bfdc2b6771231cc6a51e6aad9b48318cc1f.diff

LOG: [X86] Add getTargetConstantPoolFromBasePtr helper. NFC.

Split out of getTargetConstantFromBasePtr

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 e1c627f97e393bc..531e43ad109c6fa 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4556,15 +4556,17 @@ static SDValue getShuffleVectorZeroOrUndef(SDValue V2, int Idx,
   return DAG.getVectorShuffle(VT, SDLoc(V2), V1, V2, MaskVec);
 }
 
-static const Constant *getTargetConstantFromBasePtr(SDValue Ptr) {
+static const ConstantPoolSDNode *getTargetConstantPoolFromBasePtr(SDValue Ptr) {
   if (Ptr.getOpcode() == X86ISD::Wrapper ||
       Ptr.getOpcode() == X86ISD::WrapperRIP)
     Ptr = Ptr.getOperand(0);
+  return dyn_cast<ConstantPoolSDNode>(Ptr);
+}
 
-  auto *CNode = dyn_cast<ConstantPoolSDNode>(Ptr);
+static const Constant *getTargetConstantFromBasePtr(SDValue Ptr) {
+  const ConstantPoolSDNode *CNode = getTargetConstantPoolFromBasePtr(Ptr);
   if (!CNode || CNode->isMachineConstantPoolEntry() || CNode->getOffset() != 0)
     return nullptr;
-
   return CNode->getConstVal();
 }