[PATCH] D138922: [SPARC] Lower SELECT_CC to MOVr on 64-bit target whenever possible

[Koakuma via Phabricator via llvm-commits]

koakuma created this revision.
koakuma added reviewers: arsenm, MaskRay, dcederman, brad.
Herald added subscribers: StephenFan, jrtc27, fedor.sergeev, hiraditya, jyknight.
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Herald added subscribers: llvm-commits, wdng.
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On 64-bit target, when doing i64 SELECT_CC where one of the comparison operands is a constant zero, try to fold the compare and MOVcc into a MOVr instruction.

For all integers, EQ and NE comparison are available, additionally for signed integers, GT, GE, LT, and LE is also available.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138922

Files:
  llvm/lib/Target/Sparc/MCTargetDesc/SparcInstPrinter.cpp
  llvm/lib/Target/Sparc/Sparc.h
  llvm/lib/Target/Sparc/SparcISelLowering.cpp
  llvm/lib/Target/Sparc/SparcISelLowering.h
  llvm/lib/Target/Sparc/SparcInstr64Bit.td
  llvm/lib/Target/Sparc/SparcInstrAliases.td
  llvm/lib/Target/Sparc/SparcInstrFormats.td
  llvm/lib/Target/Sparc/SparcInstrInfo.cpp
  llvm/lib/Target/Sparc/SparcInstrInfo.td
  llvm/test/CodeGen/SPARC/64bit.ll
  llvm/test/CodeGen/SPARC/64cond.ll
  llvm/test/CodeGen/SPARC/smulo-128-legalisation-lowering.ll
  llvm/test/CodeGen/SPARC/umulo-128-legalisation-lowering.ll

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