[all-commits] [llvm/llvm-project] 609899: [flang][cuda] Avoid stack corruption when setting ...

[khaki3 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 609899f443223ccc977c25293931067e73ad76db
      https://github.com/llvm/llvm-project/commit/609899f443223ccc977c25293931067e73ad76db
  Author: khaki3 <47756807+khaki3 at users.noreply.github.com>
  Date:   2024-12-10 (Tue, 10 Dec 2024)

  Changed paths:
    M flang/lib/Optimizer/Transforms/CUFGPUToLLVMConversion.cpp
    M flang/test/Fir/CUDA/cuda-gpu-launch-func.mlir

  Log Message:
  -----------
  [flang][cuda] Avoid stack corruption when setting kernel launch parameters (#119469)

In order to get the pointer to a structure member, `getelementptr`
typically requires two indices: one to indicate the structure itself,
and another to specify the member's position. We are missing the former
in `GPULaunchKernelConversion`, so generated code may cause stack
corruption. This PR corrects the indices of a structure used as a kernel
launch temp.



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