[all-commits] [llvm/llvm-project] 0529e2: [InstrInfo] Use 64-bit immediates for analyzeCompa...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0529e2e01888129b21becd1fe3a61d9cb07c6fcd
      https://github.com/llvm/llvm-project/commit/0529e2e01888129b21becd1fe3a61d9cb07c6fcd
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2021-08-30 (Mon, 30 Aug 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetInstrInfo.h
    M llvm/lib/CodeGen/PeepholeOptimizer.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.h
    M llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
    M llvm/lib/Target/ARM/ARMBaseInstrInfo.h
    M llvm/lib/Target/Hexagon/HexagonHardwareLoops.cpp
    M llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
    M llvm/lib/Target/Hexagon/HexagonInstrInfo.h
    M llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
    M llvm/lib/Target/Lanai/LanaiInstrInfo.cpp
    M llvm/lib/Target/Lanai/LanaiInstrInfo.h
    M llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
    M llvm/lib/Target/PowerPC/PPCInstrInfo.h
    M llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
    M llvm/lib/Target/SystemZ/SystemZInstrInfo.h
    M llvm/lib/Target/X86/X86InstrInfo.cpp
    M llvm/lib/Target/X86/X86InstrInfo.h

  Log Message:
  -----------
  [InstrInfo] Use 64-bit immediates for analyzeCompare() (NFCI)

The backend generally uses 64-bit immediates (e.g. what
MachineOperand::getImm() returns), so use that for analyzeCompare()
and optimizeCompareInst() as well. This avoids truncation for
targets that support immediates larger 32-bit. In particular, we
can avoid the bugprone value normalization hack in the AArch64
target.

This is a followup to D108076.

Differential Revision: https://reviews.llvm.org/D108875