[all-commits] [llvm/llvm-project] 8f0a47: [Instrumentor] Fix indirect arguments on gpu targe...

[jandrovins via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f0a479f46c98e1a098319786d0848e4b9e0a98d
      https://github.com/llvm/llvm-project/commit/8f0a479f46c98e1a098319786d0848e4b9e0a98d
  Author: jandrovins <46629861+jandrovins at users.noreply.github.com>
  Date:   2026-07-16 (Thu, 16 Jul 2026)

  Changed paths:
    M llvm/lib/Transforms/IPO/Instrumentor.cpp
    A llvm/test/Instrumentation/Instrumentor/load_store_gpu_ind.json
    A llvm/test/Instrumentation/Instrumentor/load_store_gpu_ind.ll

  Log Message:
  -----------
  [Instrumentor] Fix indirect arguments on gpu targets (#209835)

When an argument is passed indirectly,
`IRTCallDescription::createLLVMCall` spills it into a temporary alloca
and passes that alloca address to the runtime call. The alloca is
created in the target's alloca address space. On GPUs it is not address
space 0, which is what the runtime expects for indirect parameters. The
alloca pointer was passed as the argument, so its type didn't match the
call's declared parameter type, causing a "bad signature" assertion in
`CallInst::init` when instrumenting GPU code that requires indirection.
The solution is therefore to cast this pointer to address space 0 before
passing it the the instrumentor call.



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