[all-commits] [llvm/llvm-project] 127a4c: [LLDB] RISCV feature attribute support and allows...

[Santhosh Kumar Ellendula via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 127a4c1a883d333033470c1a243dc60e8b064f1c
      https://github.com/llvm/llvm-project/commit/127a4c1a883d333033470c1a243dc60e8b064f1c
  Author: Santhosh Kumar Ellendula <quic_sellendu at quicinc.com>
  Date:   2026-06-10 (Wed, 10 Jun 2026)

  Changed paths:
    M lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp
    M lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.h
    M lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
    M lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
    A lldb/test/Shell/Disassemble/TestDisassembleRISCVInstructions.test
    M lldb/test/Shell/lit.cfg.py
    M lldb/test/Shell/lit.site.cfg.py.in
    M lldb/unittests/Disassembler/RISCV/TestMCDisasmInstanceRISCV.cpp

  Log Message:
  -----------
  [LLDB]  RISCV feature attribute support and allows overriding additional(default) feature (#147990)

Parse ELF attributes to automatically set disassembler features.
llvm-objdump calls ELFObjectFile::getFeatures, then turns that into a
cstr to pass to createMCSubtargetInfo.
The lldb disassembler builds features for various architectures manually
and adds in the value from the command line.
If this is empty, it uses the default. then it turns that into a cstr
and passes it to createMCSubtargetInfo.

For Hexagon and RISC-V, parse the attributes, set up features, add
anything else needed.
If this is empty, pick the default.
Then turn into a cstr and pass to createMCSubtargetInfo (via
MCDisasmInstance::Create).

This patch adds RISCV feature attribute support and allows overriding
additional(default) feature.

---------

Co-authored-by: Santhosh Kumar Ellendula <sellendu at hu-sellendu-hyd.qualcomm.com>
Co-authored-by: Santhosh Kumar Ellendula <sellendu at hu-sellendu-lv.qualcomm.com>



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