[all-commits] [llvm/llvm-project] e3d2a7: [libc] Compile the GPU functions with '-fconvergen...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e3d2a7d0a51b7836d70e580aaf1b08ea5da45a3b
      https://github.com/llvm/llvm-project/commit/e3d2a7d0a51b7836d70e580aaf1b08ea5da45a3b
  Author: Joseph Huber <35342157+jhuber6 at users.noreply.github.com>
  Date:   2023-10-25 (Wed, 25 Oct 2023)

  Changed paths:
    M libc/cmake/modules/LLVMLibCObjectRules.cmake

  Log Message:
  -----------
  [libc] Compile the GPU functions with '-fconvergent-functions' (#70229)

Summary:
This patch simply adds the `-fconvergent-functions` flag to the GPU
compilation. This is in relation to the behaviour of SIMT
architectures under divergence. With the flag, we assume every function
is convergent by default and rely on the compiler's divergence analysis
to transform it if possible.

Fixes: https://github.com/llvm/llvm-project/issues/63853