Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.

1 files changed, 0 insertions, 50 deletions

diff --git a/contrib/llvm/lib/Support/Unix/RWMutex.inc b/contrib/llvm/lib/Support/Unix/RWMutex.inc
deleted file mode 100644
index 8b47dfa0f85c..000000000000
--- a/contrib/llvm/lib/Support/Unix/RWMutex.inc
+++ /dev/null
@@ -1,50 +0,0 @@
-//= llvm/Support/Unix/RWMutex.inc - Unix Reader/Writer Mutual Exclusion Lock  =//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the Unix specific (non-pthread) RWMutex class.
-//
-//===----------------------------------------------------------------------===//
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only generic UNIX code that
-//===          is guaranteed to work on *all* UNIX variants.
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/Mutex.h"
-
-namespace llvm {
-
-using namespace sys;
-
-// This naive implementation treats readers the same as writers.  This
-// will therefore deadlock if a thread tries to acquire a read lock
-// multiple times.
-
-RWMutexImpl::RWMutexImpl() : data_(new MutexImpl(false)) { }
-
-RWMutexImpl::~RWMutexImpl() {
-  delete static_cast<MutexImpl *>(data_);
-}
-
-bool RWMutexImpl::reader_acquire() {
-  return static_cast<MutexImpl *>(data_)->acquire();
-}
-
-bool RWMutexImpl::reader_release() {
-  return static_cast<MutexImpl *>(data_)->release();
-}
-
-bool RWMutexImpl::writer_acquire() {
-  return static_cast<MutexImpl *>(data_)->acquire();
-}
-
-bool RWMutexImpl::writer_release() {
-  return static_cast<MutexImpl *>(data_)->release();
-}
-
-}