[all-commits] [llvm/llvm-project] 6590a3: [SPARC] Lower BR_CC to BPr on 64-bit target whenev...

[Koakuma via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6590a372fa3f4582c04b4b179f90a3c728e75025
      https://github.com/llvm/llvm-project/commit/6590a372fa3f4582c04b4b179f90a3c728e75025
  Author: Koakuma <koachan at protonmail.com>
  Date:   2023-03-11 (Sat, 11 Mar 2023)

  Changed paths:
    M llvm/lib/Target/Sparc/MCTargetDesc/SparcInstPrinter.cpp
    M llvm/lib/Target/Sparc/SparcISelLowering.cpp
    M llvm/lib/Target/Sparc/SparcISelLowering.h
    M llvm/lib/Target/Sparc/SparcInstr64Bit.td
    M llvm/lib/Target/Sparc/SparcInstrAliases.td
    M llvm/lib/Target/Sparc/SparcInstrFormats.td
    M llvm/lib/Target/Sparc/SparcInstrInfo.cpp
    M llvm/lib/Target/Sparc/SparcInstrInfo.td
    M llvm/test/CodeGen/SPARC/branches-relax.ll
    M llvm/test/CodeGen/SPARC/branches-v9.ll
    M llvm/test/CodeGen/SPARC/missinglabel.ll

  Log Message:
  -----------
  [SPARC] Lower BR_CC to BPr on 64-bit target whenever possible

On 64-bit target, when doing i64 BR_CC where one of the comparison operands is a
constant zero, try to fold the compare and BPcc into a BPr instruction.

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

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D142461