[all-commits] [llvm/llvm-project] 104f64: [HLSLSemanticSignatures] Implement the optimal pac...

[Finn Plummer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 104f644ddbd3891bcc5955164672dd447110bd3c
      https://github.com/llvm/llvm-project/commit/104f644ddbd3891bcc5955164672dd447110bd3c
  Author: Finn Plummer <mail at inbelic.dev>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/docs/DirectX/SemanticSignatures.md
    M llvm/include/llvm/Frontend/HLSL/SemanticSignaturePacking.h
    M llvm/lib/Frontend/HLSL/SemanticSignaturePacking.cpp
    M llvm/unittests/Frontend/HLSLSemanticSignaturePackingTest.cpp

  Log Message:
  -----------
  [HLSLSemanticSignatures] Implement the optimal packing of elements (#218064)

Implements the optimal packing algorithm by sorting the elements in an
optimal order before sorting with prefix packing. This also adds an
explicit packing stage for the clip/cull signature elements that allows
them to be packed with other compatible semantic types.

Resolves: #205874.

Assisted by: Claude Opus 5 and GPT-5.6 Sol



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