build: allow LTO with Clang 3.9.1+ #38751
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com>
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: #38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Landed in ab71af3 |
Thanks. 👍 and, FYI: This can be backported to v12, v14 and v16 branches. The change is small, and it does not change the behavior in any way for GCC LTO or non-LTO cases. |
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: #38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: #38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: #38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Bug: #38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: #38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Bug: nodejs#38568 Test: manual, - arm64-apple-darwin20.5.0 / Apple clang version 12.0.5 (clang-1205.0.22.9) - x86_64-pc-linux-gnu / Ubuntu clang version 13.0.0-++20210520052624+48780527dd68-1~exp1~20210520153429.417 Signed-off-by: Jesse Chan <jc@linux.com> PR-URL: nodejs#38751 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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Bug: #38568
Test: manual,
export AR=llvm-ar RANLIB=llvm-ranlib CC=clang CXX=clang++ (not needed on macOS) ./configure --enable-lto make -j32Note: LTO is very memory consuming, and 16GB (the largest we have for arm64 mac) is not enough. Things are A LOT slower when there is no enough memory. Don't panic, have patience and it will finish.
Signed-off-by: Jesse Chan jc@linux.com