[all-commits] [llvm/llvm-project] 492c1f: [PowerPC] Merge rotate and clear into single instr...

[stefanp-ibm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 492c1f3d7cf672a1ae4df85350daf05f82f558c6
      https://github.com/llvm/llvm-project/commit/492c1f3d7cf672a1ae4df85350daf05f82f558c6
  Author: Stefan Pintilie <stefanp at ca.ibm.com>
  Date:   2023-09-07 (Thu, 07 Sep 2023)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
    M llvm/test/CodeGen/PowerPC/ppc-rotate-clear.ll

  Log Message:
  -----------
  [PowerPC] Merge rotate and clear into single instruction.

This patch tries to catch a codegen opportunity where the rotate and
mask can be merged into a single RLDCL instruction.

Reviewed By: lei, amyk

Differential Revision: https://reviews.llvm.org/D158328