--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/countloc.sh	Mon May 25 11:07:02 2020 +0900
@@ -0,0 +1,39 @@
+#!/bin/sh
+##===- utils/countloc.sh - Counts Lines Of Code --------------*- Script -*-===##
+# 
+# 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 script finds all the source code files in the source code directories
+# (excluding certain things), runs "wc -l" on them to get the number of lines in
+# each file and then sums up and prints the total with awk. 
+#
+# The script takes one optional option, -topdir, which specifies the top llvm
+# source directory. If it is not specified then the llvm-config tool is 
+# consulted to find top source dir.  
+#
+# Note that the implementation is based on llvmdo. See that script for more
+# details.
+##===----------------------------------------------------------------------===##
+
+if test $# -gt 1 ; then
+  if test "$1" = "-topdir" ; then
+    TOPDIR="$2"
+    shift; shift;
+  else
+    TOPDIR=`llvm-config --src-root`
+  fi
+fi
+
+if test -d "$TOPDIR" ; then
+  cd $TOPDIR
+  ./utils/llvmdo -topdir "$TOPDIR" -dirs "include lib tools test utils examples" -code-only wc -l | awk '\
+      BEGIN { loc=0; } \
+      { loc += $1; } \
+      END { print loc; }'
+else
+  echo "Can't find LLVM top directory"
+fi