[all-commits] [llvm/llvm-project] 99c40f: [SPIR-V] Introduce a command line option to suppor...

[Vyacheslav Levytskyy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 99c40f6ba60ea6e5dbd3f015956c7d2f6e25e54c
      https://github.com/llvm/llvm-project/commit/99c40f6ba60ea6e5dbd3f015956c7d2f6e25e54c
  Author: Vyacheslav Levytskyy <vyacheslav.levytskyy at intel.com>
  Date:   2024-03-25 (Mon, 25 Mar 2024)

  Changed paths:
    M llvm/lib/Target/SPIRV/SPIRVSubtarget.cpp
    M llvm/test/CodeGen/SPIRV/instructions/ptrcmp.ll

  Log Message:
  -----------
  [SPIR-V] Introduce a command line option to support compatibility with Khronos SPIRV Translator (#86101)

SPIRV-LLVM-Translator project
(https://github.com/KhronosGroup/SPIRV-LLVM-Translator) from Khronos
Group is a tool and a library for bi-directional translation between
SPIR-V and LLVM IR. In its backward translation from SPIR-V to LLVM IR
SPIRV-LLVM-Translator isn't necessarily able to cover the same SPIR-V
patterns/instructions set that SPIRV Backend produces, even if we target
the same SPIR-V version in both SPIRV-LLVM-Translator and SPIRV Backend
projects.

To improve interoperability and ability to apply SPIRV Backend output in
different products this PR introduces a notion of a mode of SPIR-V
output that is compatible with a subset of SPIR-V supported by
SPIRV-LLVM-Translator. This includes a new command line option that
doesn't influence default behavior of SPIRV Backend and one test case
that demonstrates how this command line option may be used to get a
practical benefit of producing that one of two possible and similar
output options that can be understood by SPIRV-LLVM-Translator.



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