[llvm] r367903 - [libc++] Take 2: Integrate the PSTL into libc++

[Louis Dionne via llvm-commits]

Author: ldionne
Date: Mon Aug  5 11:29:14 2019
New Revision: 367903

URL: http://llvm.org/viewvc/llvm-project?rev=367903&view=rev
Log:
[libc++] Take 2: Integrate the PSTL into libc++

Summary:
This commit allows specifying LIBCXX_ENABLE_PARALLEL_ALGORITHMS when
configuring libc++ in CMake. When that option is enabled, libc++ will
assume that the PSTL can be found somewhere on the CMake module path,
and it will provide the C++17 parallel algorithms based on the PSTL
(that is assumed to be available).

The commit also adds support for running the PSTL tests as part of
the libc++ test suite.

The first attempt to commit this failed because it exposed a bug in the
tests for modules. Now that this has been fixed, it should be safe to
commit this.

Reviewers: EricWF

Subscribers: mgorny, christof, jkorous, dexonsmith, libcxx-commits, mclow.lists, EricWF

Tags: #libc

Differential Revision: https://reviews.llvm.org/D60480

Modified:
    llvm/trunk/projects/CMakeLists.txt

Modified: llvm/trunk/projects/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/projects/CMakeLists.txt?rev=367903&r1=367902&r2=367903&view=diff
==============================================================================
--- llvm/trunk/projects/CMakeLists.txt (original)
+++ llvm/trunk/projects/CMakeLists.txt Mon Aug  5 11:29:14 2019
@@ -30,8 +30,8 @@ if(${LLVM_BUILD_RUNTIME})
     # Add the projects in reverse order of their dependencies so that the
     # dependent projects can see the target names of their dependencies.
     add_llvm_external_project(libunwind)
-    add_llvm_external_project(libcxxabi)
     add_llvm_external_project(pstl)
+    add_llvm_external_project(libcxxabi)
     add_llvm_external_project(libcxx)
   endif()
   if(NOT LLVM_BUILD_EXTERNAL_COMPILER_RT)