[all-commits] [llvm/llvm-project] d03744: [DAG] visitSHL - use FoldConstantArithmetic to fol...

Simon Pilgrim via All-commits all-commits at lists.llvm.org
Tue Aug 29 10:52:49 PDT 2023

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d037445f3a2c6dc1842b5bfc1d5d81988c2f223d
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2023-08-29 (Tue, 29 Aug 2023)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

  Log Message:
  [DAG] visitSHL - use FoldConstantArithmetic to fold constants in (shl (add x, c1), c2) -> (add (shl x, c2), c1 << c2) fold

Matches what we do in the (shl (mul x, c1), c2) -> (mul x, c1 << c2) fold as well as inside visitShiftByConstant

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