[llvm] e173631 - [X86][AVX] SimplifyDemandedVectorEltsForTargetNode - use getBROADCAST_LOAD helper. NFCI.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-11-02T14:07:22Z
New Revision: e173631dd1f17f8f26ae84079bc059df2e633eb1

URL: https://github.com/llvm/llvm-project/commit/e173631dd1f17f8f26ae84079bc059df2e633eb1
DIFF: https://github.com/llvm/llvm-project/commit/e173631dd1f17f8f26ae84079bc059df2e633eb1.diff

LOG: [X86][AVX] SimplifyDemandedVectorEltsForTargetNode - use getBROADCAST_LOAD helper. NFCI.

Reduce width of X86ISD::SUBV_BROADCAST_LOAD node.

Added: 
    

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

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 0f71dbda120f..26ea0d59a2f4 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -40122,15 +40122,11 @@ bool X86TargetLowering::SimplifyDemandedVectorEltsForTargetNode(
         SDLoc DL(Op);
         EVT BcstVT = EVT::getVectorVT(*TLO.DAG.getContext(), VT.getScalarType(),
                                       ExtSizeInBits / VT.getScalarSizeInBits());
-        SDVTList Tys = TLO.DAG.getVTList(BcstVT, MVT::Other);
-        SDValue Ops[] = {MemIntr->getOperand(0), MemIntr->getOperand(1)};
-        SDValue Bcst =
-            TLO.DAG.getMemIntrinsicNode(X86ISD::SUBV_BROADCAST_LOAD, DL, Tys,
-                                        Ops, MemVT, MemIntr->getMemOperand());
-        TLO.DAG.makeEquivalentMemoryOrdering(SDValue(MemIntr, 1),
-                                             Bcst.getValue(1));
-        return TLO.CombineTo(Op, insertSubVector(TLO.DAG.getUNDEF(VT), Bcst, 0,
-                                                 TLO.DAG, DL, ExtSizeInBits));
+        if (SDValue BcstLd =
+                getBROADCAST_LOAD(Opc, DL, BcstVT, MemVT, MemIntr, 0, TLO.DAG))
+          return TLO.CombineTo(Op,
+                               insertSubVector(TLO.DAG.getUNDEF(VT), BcstLd, 0,
+                                               TLO.DAG, DL, ExtSizeInBits));
       }
       break;
     }