[all-commits] [llvm/llvm-project] 1409e1: [SPIRV] Add logic for OpGenericCastToPtrExplicit r...

[Justin Cai via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1409e1a5e5f878b55441c72cb1ef384405d953c7
      https://github.com/llvm/llvm-project/commit/1409e1a5e5f878b55441c72cb1ef384405d953c7
  Author: Justin Cai <justin.cai at intel.com>
  Date:   2025-07-10 (Thu, 10 Jul 2025)

  Changed paths:
    M llvm/lib/Target/SPIRV/CMakeLists.txt
    A llvm/lib/Target/SPIRV/SPIRVTargetTransformInfo.cpp
    M llvm/lib/Target/SPIRV/SPIRVTargetTransformInfo.h
    A llvm/test/Transforms/InferAddressSpaces/SPIRV/generic-cast-explicit.ll

  Log Message:
  -----------
  [SPIRV] Add logic for OpGenericCastToPtrExplicit rewriting (#146596)

This PR adds overrides in `SPIRVTTIImpl` for
`collectFlatAddressOperands` and `rewriteIntrinsicWithAddressSpace` to
enable `InferAddressSpacesPass` to rewrite the
`llvm.spv.generic.cast.to.ptr.explicit` intrinsic (corresponding to
`OpGenericCastToPtrExplicit`) when the address space of the argument can
be inferred. When the destination address space of the cast matches the
inferred address space of the argument, the call is replaced with that
argument. When they do not match, the cast is replaced with a constant
null pointer.



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