[all-commits] [llvm/llvm-project] 0c21d6: [libclc] Fix commands in compile_to_bc are execute...

[Wenju He via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0c21d6b4c8ad7310b0cd81bbefa06b2947b671f9
      https://github.com/llvm/llvm-project/commit/0c21d6b4c8ad7310b0cd81bbefa06b2947b671f9
  Author: Wenju He <wenju.he at intel.com>
  Date:   2025-04-14 (Mon, 14 Apr 2025)

  Changed paths:
    M libclc/cmake/modules/AddLibclc.cmake

  Log Message:
  -----------
  [libclc] Fix commands in compile_to_bc are executed sequentially (#130755)

In libclc, we observe that compiling OpenCL source files to bitcode is
executed sequentially on Windows, which increases debug build time by
about an hour.
add_custom_command may introduce additional implicit dependencies, see
https://gitlab.kitware.com/cmake/cmake/-/issues/17097
This PR adds a target for each command, enabling parallel builds of
OpenCL source files.
CMake 3.27 has fixed above issue with DEPENDS_EXPLICIT_ONLY. When LLVM
upgrades cmake vertion to 3.7, we can switch to DEPENDS_EXPLICIT_ONLY.



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