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Issue 1809273002: Enable whole-program virtual function optimization in LTO mode. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 4 years, 8 months ago
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1 # Copyright 2015 The Chromium Authors. All rights reserved. 1 # Copyright 2015 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be 2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file. 3 # found in the LICENSE file.
4 4
5 # Toolchain-related configuration that may be needed outside the context of the 5 # Toolchain-related configuration that may be needed outside the context of the
6 # toolchain() rules themselves. 6 # toolchain() rules themselves.
7 7
8 declare_args() {
9 # Enable Link Time Optimization in optimized builds (output programs run
10 # faster, but linking is up to 5-20x slower).
11 #
12 # TODO(pcc): Remove this flag if/when LTO is enabled in official builds.
13 allow_posix_link_time_opt = false
14 }
15
8 # Subdirectory within root_out_dir for shared library files. 16 # Subdirectory within root_out_dir for shared library files.
9 # TODO(agrieve): GYP sets this to "lib" for Linux & Android, but this won't work 17 # TODO(agrieve): GYP sets this to "lib" for Linux & Android, but this won't work
10 # in GN until support for loadable_module() is added. 18 # in GN until support for loadable_module() is added.
11 # See: https://codereview.chromium.org/1236503002/ 19 # See: https://codereview.chromium.org/1236503002/
12 shlib_subdir = "." 20 shlib_subdir = "."
13 21
14 # Root out dir for shared library files. 22 # Root out dir for shared library files.
15 root_shlib_dir = root_out_dir 23 root_shlib_dir = root_out_dir
16 if (shlib_subdir != ".") { 24 if (shlib_subdir != ".") {
17 root_shlib_dir += "/$shlib_subdir" 25 root_shlib_dir += "/$shlib_subdir"
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48 stamp_description = "STAMP {{output}}" 56 stamp_description = "STAMP {{output}}"
49 copy_description = "COPY {{source}} {{output}}" 57 copy_description = "COPY {{source}} {{output}}"
50 if (host_os == "win") { 58 if (host_os == "win") {
51 stamp_command = "$python_path gyp-win-tool stamp {{output}}" 59 stamp_command = "$python_path gyp-win-tool stamp {{output}}"
52 copy_command = 60 copy_command =
53 "$python_path gyp-win-tool recursive-mirror {{source}} {{output}}" 61 "$python_path gyp-win-tool recursive-mirror {{source}} {{output}}"
54 } else { 62 } else {
55 stamp_command = "touch {{output}}" 63 stamp_command = "touch {{output}}"
56 copy_command = "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})" 64 copy_command = "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})"
57 } 65 }
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