diff --git a/llvm/utils/release/test-release.sh b/llvm/utils/release/test-release.sh
--- a/llvm/utils/release/test-release.sh
+++ b/llvm/utils/release/test-release.sh
@@ -22,6 +22,7 @@
 Release=""
 Release_no_dot=""
 RC=""
+Runtimes=""
 Triple=""
 use_gzip="no"
 do_checkout="yes"
@@ -49,6 +50,7 @@
     echo ""
     echo " -release X.Y.Z       The release version to test."
     echo " -rc NUM              The pre-release candidate number."
+    echo " -runtimes PROJECTS   Projects to be built as apart of runtimes (semicolon separated list)."
     echo " -final               The final release candidate."
     echo " -triple TRIPLE       The target triple for this machine."
     echo " -j NUM               Number of compile jobs to run. [default: 3]"
@@ -86,6 +88,10 @@
             shift
             RC="rc$1"
             ;;
+        -runtimes | --runtimes )
+            shift
+            Runtimes="$1"
+            ;;
         -final | --final )
             RC=final
             ;;
@@ -236,15 +242,15 @@
 
 # Projects list
 projects="llvm clang clang-tools-extra"
-if [ $do_rt = "yes" ]; then
+if [ $do_rt = "yes" ] && [[ $Runtimes != *"compiler-rt"* ]]; then
   projects="$projects compiler-rt"
 fi
-if [ $do_libs = "yes" ]; then
+if [ $do_libs = "yes" ] && [[ $Runtimes != *"libcxx"* ]]; then
   projects="$projects libcxx"
-  if [ $do_libcxxabi = "yes" ]; then
+  if [ $do_libcxxabi = "yes" ] && [[ $Runtimes != *"libcxxabi"* ]]; then
     projects="$projects libcxxabi"
   fi
-  if [ $do_libunwind = "yes" ]; then
+  if [ $do_libunwind = "yes" ] && [[ $Runtimes != *"libunwind"* ]]; then
     projects="$projects libunwind"
   fi
 fi
@@ -387,12 +393,14 @@
         cmake -G "$generator" \
         -DCMAKE_BUILD_TYPE=$BuildType -DLLVM_ENABLE_ASSERTIONS=$Assertions \
         -DLLVM_ENABLE_PROJECTS="$project_list" \
+        -DLLVM_ENABLE_RUNTIMES="$Runtimes" \
         $ExtraConfigureFlags $BuildDir/llvm-project/llvm \
         2>&1 | tee $LogDir/llvm.configure-Phase$Phase-$Flavor.log
     env CC="$c_compiler" CXX="$cxx_compiler" \
         cmake -G "$generator" \
         -DCMAKE_BUILD_TYPE=$BuildType -DLLVM_ENABLE_ASSERTIONS=$Assertions \
         -DLLVM_ENABLE_PROJECTS="$project_list" \
+        -DLLVM_ENABLE_RUNTIMES="$Runtimes" \
         $ExtraConfigureFlags $BuildDir/llvm-project/llvm \
         2>&1 | tee $LogDir/llvm.configure-Phase$Phase-$Flavor.log