[all-commits] [llvm/llvm-project] 531a8a: Add support for NSDI DebugScope, DebugNoScope and ...

[Manuel Carrasco via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 531a8ac4c959dbdabcb4fea4a31beecde36bcdd9
      https://github.com/llvm/llvm-project/commit/531a8ac4c959dbdabcb4fea4a31beecde36bcdd9
  Author: Manuel Carrasco <Manuel.Carrasco at amd.com>
  Date:   2026-09-09 (Wed, 09 Sep 2026)

  Changed paths:
    M llvm/lib/Target/SPIRV/SPIRVNonSemanticDebugHandler.cpp
    M llvm/lib/Target/SPIRV/SPIRVNonSemanticDebugHandler.h
    M llvm/test/CodeGen/SPIRV/debug-info/debug-function-definition-call-before-alloca.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-function-definition-calls.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-function-definition-external-call.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-inlined-at-recursive.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-inlined-at.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-block.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-calls.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-if-phi.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-loop-merge.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-loop.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-selection-merge.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line-shared.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-line.ll
    M llvm/test/CodeGen/SPIRV/debug-info/debug-no-line.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope-block.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope-no-scope-block.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope-no-scope.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope-same-line.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope-shared.ll
    A llvm/test/CodeGen/SPIRV/debug-info/debug-scope.ll

  Log Message:
  -----------
  Add support for NSDI DebugScope, DebugNoScope and DebugInlinedAt (#218959)

Add support for NSDI
[DebugScope](https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.Shader.DebugInfo.html#DebugScope),
[DebugNoScope](https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.Shader.DebugInfo.html#DebugNoScope)
and
[DebugInlinedAt](https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.Shader.DebugInfo.html#DebugInlinedAt).

DebugScope/DebugNoScope are region delimiters following the same region
rule as DebugLine/DebugNoLine. The two regions are tracked separately
because a DebugScope region could span several DebugLine regions, and
either can skip emission on a cache miss at different times.

DebugInlinedAt is not an region instruction, so it is emitted at module
scope. We allow recursive traversal when building them to support
chains.

The PR also adds a test showing a limitation in the DebugLine
deduplication that is at the DILocation pointer level which may lead to
duplicate opcodes.



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