[all-commits] [llvm/llvm-project] 2e55bc: [PowerPC] Set the special DSCR with a compiler opt...

[stefanp-ibm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2e55bc9f3c233679535e237623539195e6492ec1
      https://github.com/llvm/llvm-project/commit/2e55bc9f3c233679535e237623539195e6492ec1
  Author: Stefan Pintilie <stefanp at ca.ibm.com>
  Date:   2022-03-31 (Thu, 31 Mar 2022)

  Changed paths:
    M llvm/lib/Target/PowerPC/P10InstrResources.td
    M llvm/lib/Target/PowerPC/P9InstrResources.td
    M llvm/lib/Target/PowerPC/PPCInstrInfo.td
    M llvm/lib/Target/PowerPC/PPCPreEmitPeephole.cpp
    A llvm/test/CodeGen/PowerPC/dscr-set.ll
    M llvm/test/MC/Disassembler/PowerPC/ppc64-encoding.txt
    M llvm/test/MC/PowerPC/ppc64-encoding-ext.s

  Log Message:
  -----------
  [PowerPC] Set the special DSCR with a compiler option.

Add a compiler option and the instructions required to set the
special Data Stream Control Register (DSCR). The special register will
not be set by default.

Original patch by: Muhammad Usman

Reviewed By: nemanjai, #powerpc

Differential Revision: https://reviews.llvm.org/D117013