[all-commits] [llvm/llvm-project] de0c36: [llvm][SPIRV] Add pass to lower Ctors/Dtors for SP...

[Alex Duran via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: de0c366e4b7224f33d2945194035d21501e3d636
      https://github.com/llvm/llvm-project/commit/de0c366e4b7224f33d2945194035d21501e3d636
  Author: Alex Duran <alejandro.duran at intel.com>
  Date:   2026-03-24 (Tue, 24 Mar 2026)

  Changed paths:
    M llvm/lib/Target/SPIRV/CMakeLists.txt
    M llvm/lib/Target/SPIRV/SPIRV.h
    A llvm/lib/Target/SPIRV/SPIRVCtorDtorLowering.cpp
    A llvm/lib/Target/SPIRV/SPIRVCtorDtorLowering.h
    M llvm/lib/Target/SPIRV/SPIRVTargetMachine.cpp
    A llvm/test/CodeGen/SPIRV/ctor-dtor-lowering-ir.ll
    A llvm/test/CodeGen/SPIRV/ctor-dtor-lowering.ll
    A llvm/test/CodeGen/SPIRV/ctor-dtor-no-openmp-ir.ll
    M llvm/test/CodeGen/SPIRV/llc-pipeline.ll

  Log Message:
  -----------
  [llvm][SPIRV] Add pass to lower Ctors/Dtors for SPIRV (#187509)

This PR adds a new SPIRV pass that generates a kernel named
"spirv$device$init" that iterates the pointers in the table pointed by
__init_array_start and __init_array_end and executes them. It also
generates symbols for each constructor with the form
__init_array_object_NAME_PRIORITY.

These symbols will be used by the Level Zero plugin in the liboffload
runtime (with the support introduced by #187510) to generate the
aforementioned table as spirv-link cannot create the table itself.

It also does the same thing for destructors, with the kernel name being
"spirv$device$fini", the table pointers __fini_array_start and
__fini_array_end, and the generated symbols prefix __fini_array_object.

The code was mostly generated by Claude 4.5 and has been reviewed by me
to the best of my ability.



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