[llvm] 651b405 - [DAG] visitABS - use FoldConstantArithmetic to perform constant folding.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2023-03-21T17:23:27Z
New Revision: 651b4054a019cb681bb879e31a01054a3105ea90

URL: https://github.com/llvm/llvm-project/commit/651b4054a019cb681bb879e31a01054a3105ea90
DIFF: https://github.com/llvm/llvm-project/commit/651b4054a019cb681bb879e31a01054a3105ea90.diff

LOG: [DAG] visitABS - use FoldConstantArithmetic to perform constant folding.

Avoid needing to perform extra isConstantIntBuildVectorOrConstantInt checks

Added: 
    

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

Removed: 
    


################################################################################
diff  --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 5a331ceb96d64..4a34d4724ae8f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -10617,8 +10617,8 @@ SDValue DAGCombiner::visitABS(SDNode *N) {
   EVT VT = N->getValueType(0);
 
   // fold (abs c1) -> c2
-  if (DAG.isConstantIntBuildVectorOrConstantInt(N0))
-    return DAG.getNode(ISD::ABS, SDLoc(N), VT, N0);
+  if (SDValue C = DAG.FoldConstantArithmetic(ISD::ABS, SDLoc(N), VT, {N0}))
+    return C;
   // fold (abs (abs x)) -> (abs x)
   if (N0.getOpcode() == ISD::ABS)
     return N0;