[all-commits] [llvm/llvm-project] d0f955: [PowerPC] Enable fast-isel on AIX 64 subtarget

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d0f9553ef564de1ea0749ee3519d5505920dc29f
      https://github.com/llvm/llvm-project/commit/d0f9553ef564de1ea0749ee3519d5505920dc29f
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2021-09-03 (Fri, 03 Sep 2021)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCFastISel.cpp
    M llvm/test/CodeGen/PowerPC/fast-isel-GEP-coalesce.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-binary.ll
    A llvm/test/CodeGen/PowerPC/fast-isel-branch.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-const.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-crash.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-ext.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-fold.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-i64offset.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-indirectbr.ll
    M llvm/test/CodeGen/PowerPC/fast-isel-shifter.ll

  Log Message:
  -----------
  [PowerPC] Enable fast-isel on AIX 64 subtarget

This patch basically enables fast-isel for AIX 64-bit subtarget
(previously enabled only for ELF 64). The initial motivation is to
introduce branch folding to AIX generated code for correct debug
behavior. I also saw some compiling time improvement in a few LLVM
test-suite benchmarks. (toast, dbms, cjpeg, burg, etc.)

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D98844