[llvm] 54f09be - [X86] LowerABS - use DAG::getNegative() helper. NFC.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2024-04-29T17:44:38+01:00
New Revision: 54f09be90f5e8bcb9c25b1827d11ed0ac7f3b887

URL: https://github.com/llvm/llvm-project/commit/54f09be90f5e8bcb9c25b1827d11ed0ac7f3b887
DIFF: https://github.com/llvm/llvm-project/commit/54f09be90f5e8bcb9c25b1827d11ed0ac7f3b887.diff

LOG: [X86] LowerABS - use DAG::getNegative() helper. 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 ea876307f2aef3..00cecc2b573f01 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -28151,9 +28151,8 @@ static SDValue LowerABS(SDValue Op, const X86Subtarget &Subtarget,
   // ABS(vXi64 X) --> VPBLENDVPD(X, 0-X, X).
   if ((VT == MVT::v2i64 || VT == MVT::v4i64) && Subtarget.hasSSE41()) {
     SDValue Src = Op.getOperand(0);
-    SDValue Sub =
-        DAG.getNode(ISD::SUB, DL, VT, DAG.getConstant(0, DL, VT), Src);
-    return DAG.getNode(X86ISD::BLENDV, DL, VT, Src, Sub, Src);
+    SDValue Neg = DAG.getNegative(Src, DL, VT);
+    return DAG.getNode(X86ISD::BLENDV, DL, VT, Src, Neg, Src);
   }
 
   if (VT.is256BitVector() && !Subtarget.hasInt256()) {