[libcxx-commits] [libcxx] [libcxxabi] Adding Separate OpenMP Offloading Backend to `libcxx/include/__algorithm/pstl_backends` (PR #66968)

[Louis Dionne via libcxx-commits]

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@@ -30,6 +30,14 @@ if (LLVM_USE_SANITIZER)
   serialize_lit_string_param(SERIALIZED_LIT_PARAMS use_sanitizer "${LLVM_USE_SANITIZER}")
 endif()
 
+# If the OpenMP PSTL backend was enabled, the OpenMP compilation toolchain must
+# also be enabled for the LIT tests
+if (DEFINED LIBCXX_PSTL_BACKEND)
+  if (LIBCXX_PSTL_BACKEND STREQUAL "openmp")
+    serialize_lit_string_param(SERIALIZED_LIT_PARAMS openmp_pstl_backend "ON")
+  endif()
+endif()
+
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ldionne wrote:

This should go away. We should detect from the Lit setup that `__config_site` defines `_LIBCPP_PSTL_BACKEND_OPENMP`, and add the right flags based on that.

https://github.com/llvm/llvm-project/pull/66968