[all-commits] [llvm/llvm-project] 1d4602: [LoongArch] Support LA V1.1 feature ld-seq-sa that...

[tangaac via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1d4602070f96c9a6921d51a3b907f90cd2e3ae32
      https://github.com/llvm/llvm-project/commit/1d4602070f96c9a6921d51a3b907f90cd2e3ae32
  Author: tangaac <tangyan01 at loongson.cn>
  Date:   2024-11-22 (Fri, 22 Nov 2024)

  Changed paths:
    M clang/include/clang/Driver/Options.td
    M clang/lib/Basic/Targets/LoongArch.cpp
    M clang/lib/Basic/Targets/LoongArch.h
    M clang/lib/Driver/ToolChains/Arch/LoongArch.cpp
    M clang/test/Driver/loongarch-march.c
    A clang/test/Driver/loongarch-mld-seq-sa.c
    M clang/test/Preprocessor/init-loongarch.c
    M llvm/include/llvm/TargetParser/LoongArchTargetParser.def
    M llvm/include/llvm/TargetParser/LoongArchTargetParser.h
    M llvm/lib/Target/LoongArch/LoongArch.td
    M llvm/lib/Target/LoongArch/LoongArchExpandAtomicPseudoInsts.cpp
    M llvm/lib/TargetParser/Host.cpp
    M llvm/lib/TargetParser/LoongArchTargetParser.cpp
    M llvm/test/CodeGen/LoongArch/ir-instruction/atomic-cmpxchg.ll

  Log Message:
  -----------
  [LoongArch] Support LA V1.1 feature ld-seq-sa that don't generate dbar 0x700. (#116762)

Two options for clang
-mld-seq-sa: Do not generate load-load barrier instructions (dbar 0x700)
-mno-ld-seq-sa: Generate load-load barrier instructions (dbar 0x700)
The default is -mno-ld-seq-sa



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