--- a/build/build-clang/clang-3.9-linux64.json
+++ b/build/build-clang/clang-3.9-linux64.json
@@ -1,19 +1,19 @@
 {
-    "llvm_revision": "290136",
+    "llvm_revision": "289595",
     "stages": "3",
     "build_libcxx": true,
     "build_type": "Release",
     "assertions": false,
-    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_390/final",
-    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_390/final",
-    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_390/final",
-    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_390/final",
-    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_390/final",
+    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_391/final",
+    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_391/final",
+    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_391/final",
+    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_391/final",
+    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_391/final",
     "python_path": "/usr/bin/python2.7",
     "gcc_dir": "/builds/worker/workspace/build/src/gcc",
     "cc": "/builds/worker/workspace/build/src/gcc/bin/gcc",
     "cxx": "/builds/worker/workspace/build/src/gcc/bin/g++",
     "as": "/builds/worker/workspace/build/src/gcc/bin/gcc",
     "patches": [
       "llvm-debug-frame.patch",
       "r277806.patch",

--- a/build/build-clang/clang-5-linux64.json
+++ b/build/build-clang/clang-5-linux64.json
@@ -1,19 +1,19 @@
 {
-    "llvm_revision": "312553",
+    "llvm_revision": "320874",
     "stages": "3",
     "build_libcxx": true,
     "build_type": "Release",
     "assertions": false,
-    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_500/final",
-    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_500/final",
-    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_500/final",
-    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_500/final",
-    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_500/final",
+    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_501/final",
+    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_501/final",
+    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_501/final",
+    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_501/final",
+    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_501/final",
     "python_path": "/usr/bin/python2.7",
     "gcc_dir": "/builds/worker/workspace/build/src/gcc",
     "cc": "/builds/worker/workspace/build/src/gcc/bin/gcc",
     "cxx": "/builds/worker/workspace/build/src/gcc/bin/g++",
     "as": "/builds/worker/workspace/build/src/gcc/bin/gcc",
     "patches": [
       "llvm-debug-frame-for-5.patch",
       "r313872.patch",

--- a/build/build-clang/clang-macosx64.json
+++ b/build/build-clang/clang-macosx64.json
@@ -1,20 +1,20 @@
 {
-    "llvm_revision": "290136",
+    "llvm_revision": "289595",
     "stages": "1",
     "build_libcxx": true,
     "build_type": "Release",
     "assertions": false,
     "osx_cross_compile": true,
-    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_390/final",
-    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_390/final",
-    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_390/final",
-    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_390/final",
-    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_390/final",
+    "llvm_repo": "https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_391/final",
+    "clang_repo": "https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_391/final",
+    "compiler_repo": "https://llvm.org/svn/llvm-project/compiler-rt/tags/RELEASE_391/final",
+    "libcxx_repo": "https://llvm.org/svn/llvm-project/libcxx/tags/RELEASE_391/final",
+    "libcxxabi_repo": "https://llvm.org/svn/llvm-project/libcxxabi/tags/RELEASE_391/final",
     "python_path": "/usr/bin/python2.7",
     "gcc_dir": "/builds/worker/workspace/build/src/gcc",
     "cc": "/builds/worker/workspace/build/src/clang/bin/clang",
     "cxx": "/builds/worker/workspace/build/src/clang/bin/clang++",
     "as": "/builds/worker/workspace/build/src/clang/bin/clang",
     "ar": "/builds/worker/workspace/build/src/cctools/bin/x86_64-apple-darwin11-ar",
     "ranlib": "/builds/worker/workspace/build/src/cctools/bin/x86_64-apple-darwin11-ranlib",
     "libtool": "/builds/worker/workspace/build/src/cctools/bin/x86_64-apple-darwin11-libtool",