[all-commits] [llvm/llvm-project] 699e22: [ISEL] Move trivial step_vector folds to FoldConst...

[sdesmalen-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 699e22a083f2bae120e68ce7254fcddb4aaf97b3
      https://github.com/llvm/llvm-project/commit/699e22a083f2bae120e68ce7254fcddb4aaf97b3
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2022-01-24 (Mon, 24 Jan 2022)

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

  Log Message:
  -----------
  [ISEL] Move trivial step_vector folds to FoldConstantArithmetic.

Given that step_vector is practically a constant, doing this early
helps with DAGCombine folds that happen before type legalization.

There is currently no way to test this happens earlier, although existing
tests for step_vector folds continue protect the folds happening at all.

Reviewed By: david-arm

Differential Revision: https://reviews.llvm.org/D117863