[all-commits] [llvm/llvm-project] a4558a: [PowerPC] Implement 32-bit expansion for rldimi (#...

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a4558a4a53eda8d170bbd2c358d383bb0a13f91f
      https://github.com/llvm/llvm-project/commit/a4558a4a53eda8d170bbd2c358d383bb0a13f91f
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2024-04-09 (Tue, 09 Apr 2024)

  Changed paths:
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/lib/Sema/SemaChecking.cpp
    M clang/test/CodeGen/PowerPC/builtins-ppc-xlcompat-error.c
    M llvm/include/llvm/IR/IntrinsicsPowerPC.td
    M llvm/test/CodeGen/PowerPC/rldimi.ll

  Log Message:
  -----------
  [PowerPC] Implement 32-bit expansion for rldimi (#86783)

rldimi is 64-bit instruction, due to backward compatibility, it needs to
be expanded into series of rotate and masking in 32-bit environment. In
the future, we may improve bit permutation selector and remove such
direct codegen.



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