[PATCH] D103323: [DAGCombiner] Add support for mulhi const folding in DAGCombiner

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:5090
+    unsigned FullWidth = C1.getBitWidth() * 2;
+    APInt C1Ext = C1.sextOrTrunc(FullWidth);
+    APInt C2Ext = C2.sextOrTrunc(FullWidth);
----------------
You don't need "OrTrunc" here and below.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103323/new/

https://reviews.llvm.org/D103323