[all-commits] [llvm/llvm-project] a18953: [PowerPC] Fix RM operands for some instructions

[Zhang Kang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a18953c1c05e520406783acbb5e6b06954f9150d
      https://github.com/llvm/llvm-project/commit/a18953c1c05e520406783acbb5e6b06954f9150d
  Author: Kang Zhang <shkzhang at cn.ibm.com>
  Date:   2020-07-30 (Thu, 30 Jul 2020)

  Changed paths:
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp
    M llvm/lib/Target/PowerPC/PPCInstrInfo.td
    M llvm/lib/Target/PowerPC/PPCInstrVSX.td
    A llvm/test/CodeGen/PowerPC/rounding-rm-flag.ll
    M llvm/test/CodeGen/PowerPC/setrnd.ll

  Log Message:
  -----------
  [PowerPC] Fix RM operands for some instructions

Summary:
Some instructions have set the wrong [RM] flag, this patch is to fix it.

Instructions x(v|s)r(d|s)pi[zmp]? and fri[npzm] use fixed rounding
directions without referencing current rounding mode.

Also, the SETRNDi, SETRND, BCLRn, MTFSFI, MTFSB0, MTFSB1, MTFSFb,
MTFSFI, MTFSFI_rec, MTFSF, MTFSF_rec should also fix the RM flag.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D81360