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3fde6b116f
This change adds a GN template which creates a size report card across
a set of different toolchains. The toolchains are defined in a build
variable, each with an optional linker script and Bloaty config. The
size report template builds a base and diff executable with each of the
toolchains and compares the size difference of each.
Example output for the host target:
simple_bloat_toolchain
──────────────────────
┌───────────┬─────────┬────────┬───────┬───────┐
│ Label │ Segment │ Before │ Delta │ After │
├═══════════┼═════════┼════════┼═══════┼═══════┤
│ gcc -Og │ CODE │ 413 │ +32 │ 445 │
│ │ RAM │ 576 │ +8 │ 584 │
├───────────┼─────────┼────────┼───────┼───────┤
│ gcc -Os │ CODE │ 429 │ +16 │ 445 │
│ │ RAM │ 576 │ +8 │ 584 │
├───────────┼─────────┼────────┼───────┼───────┤
│ gcc -O2 │ CODE │ 429 │ +32 │ 461 │
│ │ RAM │ 576 │ +8 │ 584 │
├───────────┼─────────┼────────┼───────┼───────┤
│ clang -Og │ CODE │ 448 │ +32 │ 480 │
│ │ RAM │ 113 │ +15 │ 128 │
├───────────┼─────────┼────────┼───────┼───────┤
│ clang -Os │ CODE │ 432 │ +16 │ 448 │
│ │ RAM │ 113 │ +15 │ 128 │
├───────────┼─────────┼────────┼───────┼───────┤
│ clang -O2 │ CODE │ 448 │ +80 │ 528 │
│ │ RAM │ 113 │ +15 │ 128 │
└───────────┴─────────┴────────┴───────┴───────┘
Change-Id: I2c65f4d4f61354b9779628f207297eacd04470b9
38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
# Copyright 2019 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""Outputs a ReST warning about the size toolchains variable being empty."""
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import os
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import sys
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_NO_TOOLCHAIN_ERROR: str = '''
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.. warning::
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The ``pw_size_report_toolchains`` build variable is empty for this target.
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Size reports will not be generated.
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See :ref:`bloat-howto` for details on how to set up size reports.
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'''
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def main() -> int:
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os.makedirs(os.path.dirname(sys.argv[1]), exist_ok=True)
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with open(sys.argv[1], 'w') as fd:
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fd.write(_NO_TOOLCHAIN_ERROR)
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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