v8/tools/check-unused-symbols.sh
Michael Starzinger d540724b99 [cleanup] Remove unused heap-symbols and add tool.
R=clemensh@chromium.org
BUG=v8:8238

Change-Id: I03454ced41da35be9d389d843026ed5c0f7131fe
Reviewed-on: https://chromium-review.googlesource.com/c/1326465
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57366}
2018-11-08 17:57:05 +00:00

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#!/bin/bash
# Copyright 2018 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)
symbols=$(
grep \
--only-matching \
--perl-regexp 'V\(_, \K([^,\)]*)' \
-- "$v8_root/src/heap-symbols.h")
# Find symbols which appear exactly once (in heap-symbols.h)
grep \
--only-matching \
--no-filename \
--recursive \
--fixed-strings "$symbols" \
-- "$v8_root/src" "$v8_root/test/cctest" \
| sort \
| uniq -u \
| sed -e 's/.*/Heap symbol "&" seems to be unused./'
echo "Kthxbye."