[all-commits] [llvm/llvm-project] 097a95: [PowerPC] Add custom lowering for SELECT_CC fp128 ...

[orcguru via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 097a95f2df4666df74909ab1d3bcc0c1824ace86
      https://github.com/llvm/llvm-project/commit/097a95f2df4666df74909ab1d3bcc0c1824ace86
  Author: Ting Wang <Ting.Wang.SH at ibm.com>
  Date:   2022-02-09 (Wed, 09 Feb 2022)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/PowerPC/PPCISelLowering.h
    M llvm/lib/Target/PowerPC/PPCInstrInfo.td
    M llvm/lib/Target/PowerPC/PPCInstrPrefix.td
    A llvm/test/CodeGen/PowerPC/scalar-min-max-p10.ll

  Log Message:
  -----------
  [PowerPC] Add custom lowering for SELECT_CC fp128 using xsmaxcqp

Power ISA 3.1 adds xsmaxcqp/xsmincqp for quad-precision type-c max/min selection,
and this opens the opportunity to improve instruction selection on: llvm.maxnum.f128,
llvm.minnum.f128, and select_cc ordered gt/lt and (don't care) gt/lt.

Reviewed By: nemanjai, shchenz, amyk

Differential Revision: https://reviews.llvm.org/D117006