[all-commits] [llvm/llvm-project] a554a1: [DirectX] Generate shader debug file name part in ...

[Vladislav Dzhidzhoev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a554a1989f60ebb292b198bbbe084b5a34f880c5
      https://github.com/llvm/llvm-project/commit/a554a1989f60ebb292b198bbbe084b5a34f880c5
  Author: Vladislav Dzhidzhoev <vdzhidzhoev at accesssoftek.com>
  Date:   2026-05-28 (Thu, 28 May 2026)

  Changed paths:
    A clang/test/Driver/dxc_section_emission.hlsl
    M llvm/lib/Target/DirectX/DXContainerGlobals.cpp
    A llvm/test/CodeGen/DirectX/ContainerData/DebugName-DXIL.ll
    M llvm/test/CodeGen/DirectX/lit.local.cfg

  Log Message:
  -----------
  [DirectX] Generate shader debug file name part in llc (#199555)

This change modifies DXContainerGlobals pass to generate debug name
(ILDN) part in DXContainer. ILDN part allows consumers to find PDB file
containing shader debug info.

As ILDB emission PR is not merged yet, and PDB file creation is not
upstreamed yet, debug name is generated based on MD5-hash of bitcode
module in DXIL part.
This corresponds to DXC behavior when a shader is compiled with `/Zi
/Qembed_debug /Zsb` flags (with `/Qembed_debug`, DXC does not produce an
actual PDB file, but still emits ILDN, `/Zsb` tells DXC to use bitcode
from DXIL to compute hash).
However, here ILDN is emitted for any debug info flag configuration.
assuming that it won't break debug info consumers, and that PDB creation
will be added later.



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