[PATCH] D79304: [DAG] Fold (mul(abs(x),abs(x))) -> (mul(x,x)) (PR39476)

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:3527-3530
+  // fold mul(abs(x),abs(x)) -> mul(x,x)
+  if (N0 == N1)
+    if (SDValue AbsSrc = MatchABS(N0.getNode()))
+      return DAG.getNode(ISD::MUL, SDLoc(N), VT, AbsSrc, AbsSrc);
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This LG


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  https://reviews.llvm.org/D79304/new/

https://reviews.llvm.org/D79304