[all-commits] [llvm/llvm-project] b159ed: [LoongArch] Emit DTPREL relocations for TLS debug ...

[hev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b159ed6fa212607ecd287fa73f4bee59802b1528
      https://github.com/llvm/llvm-project/commit/b159ed6fa212607ecd287fa73f4bee59802b1528
  Author: hev <wangrui at loongson.cn>
  Date:   2026-05-29 (Fri, 29 May 2026)

  Changed paths:
    M llvm/lib/Target/LoongArch/AsmParser/LoongArchAsmParser.cpp
    M llvm/lib/Target/LoongArch/CMakeLists.txt
    M llvm/lib/Target/LoongArch/LoongArchAsmPrinter.cpp
    M llvm/lib/Target/LoongArch/LoongArchAsmPrinter.h
    M llvm/lib/Target/LoongArch/LoongArchTargetMachine.cpp
    A llvm/lib/Target/LoongArch/LoongArchTargetObjectFile.cpp
    A llvm/lib/Target/LoongArch/LoongArchTargetObjectFile.h
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchAsmBackend.cpp
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFStreamer.cpp
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFStreamer.h
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchFixupKinds.h
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchMCAsmInfo.h
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchTargetStreamer.cpp
    M llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchTargetStreamer.h
    A llvm/test/DebugInfo/LoongArch/tls.ll
    A llvm/test/MC/LoongArch/Directives/tls.s
    M llvm/utils/gn/secondary/llvm/lib/Target/LoongArch/BUILD.gn

  Log Message:
  -----------
  [LoongArch] Emit DTPREL relocations for TLS debug info (#199326)

Teach the LoongArch backend to lower thread-local debug references using
target-specific DTPREL relocations.

This adds .dtprelword and .dtpreldword directive parsing and streaming,
introduces 32-bit and 64-bit DTPREL fixups and ELF relocation mappings,
and uses a LoongArch target object file to represent debug TLS symbols
as VK_DTPREL expressions. LoongArchAsmPrinter is updated to emit the new
directives for debug TLS values in assembly output.

Add MC and debug info tests for assembly emission and object
relocations.



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