[llvm] 0a42db6 - [SelectionDAG] Simplify creation of getStoreVP in WidenVecOp_STORE. NFC

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2025-05-21T17:46:08-07:00
New Revision: 0a42db682aa01a66eb99d08063fbc6e6124792f7

URL: https://github.com/llvm/llvm-project/commit/0a42db682aa01a66eb99d08063fbc6e6124792f7
DIFF: https://github.com/llvm/llvm-project/commit/0a42db682aa01a66eb99d08063fbc6e6124792f7.diff

LOG: [SelectionDAG] Simplify creation of getStoreVP in WidenVecOp_STORE. NFC

We can use the offset from the original store instead of creating
a new undef offset.

We didn't check if the offset was undef already so we really shouldn't
drop it if it isn't.

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 59a9dced6cf03..1fd171c24a6f0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -7216,8 +7216,7 @@ SDValue DAGTypeLegalizer::WidenVecOp_STORE(SDNode *N) {
     SDValue EVL = DAG.getElementCount(DL, TLI.getVPExplicitVectorLengthTy(),
                                       StVT.getVectorElementCount());
     return DAG.getStoreVP(ST->getChain(), DL, StVal, ST->getBasePtr(),
-                          DAG.getUNDEF(ST->getBasePtr().getValueType()), Mask,
-                          EVL, StVT, ST->getMemOperand(),
+                          ST->getOffset(), Mask, EVL, StVT, ST->getMemOperand(),
                           ST->getAddressingMode());
   }