Add a script that helps merge changes into a release branch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142097 91177308-0d34-0410-b5e6-96231b3b80d8

utils/release/merge.sh

@@ -0,0 +1,72 @@
+#!/bin/sh
+#===-- merge.sh - Test the LLVM release candidates -------------------------===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License.
+#
+#===------------------------------------------------------------------------===#
+#
+# Merge a revision into a project.
+#
+#===------------------------------------------------------------------------===#
+
+set -e
+
+rev=""
+proj=""
+
+function usage() {
+    echo "usage: `basename $0` [OPTIONS]"
+    echo "  -proj PROJECT  The project to merge the result into"
+    echo "  -rev NUM       The revision to merge into the project"
+}
+
+while [ $# -gt 0 ]; do
+    case $1 in
+        -rev | --rev | -r )
+            shift
+            rev=$1
+            ;;
+        -proj | --proj | -project | --project | -p )
+            shift
+            proj=$1
+            ;;
+        -h | -help | --help )
+            usage
+            ;;
+        * )
+            echo "unknown option: $1"
+            echo ""
+            usage
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+if [ "x$rev" = "x" -o "x$proj" = "x" ]; then
+    echo "error: need to specify project and revision"
+    echo
+    usage
+    exit 1
+fi
+
+if ! svn ls http://llvm.org/svn/llvm-project/$proj/trunk > /dev/null 2>&1 ; then
+    echo "error: invalid project: $proj"
+    exit 1
+fi
+
+tempfile=`mktemp /tmp/merge.XXXXXX` || exit 1
+
+echo "Merging r$rev:" > $tempfile
+svn log -c $rev http://llvm.org/svn/llvm-project/$proj/trunk >> $tempfile 2>&1
+
+cd $proj.src
+echo "# Merging r$rev into $proj"
+svn merge -c $rev https://llvm.org/svn/llvm-project/$proj/trunk . || exit 1
+echo "# Committing changes"
+svn commit -F $tempfile || exit 1
+rm -f $tempfile
+exit 0