On Tue, 17 Dec 2024 14:54:03 GMT, Julian Waters <jwat...@openjdk.org> wrote:

>> This is a general cleanup and improvement of LTO, as well as a quick fix to 
>> remove a workaround in the Makefiles that disabled LTO for 
>> g1ParScanThreadState.cpp due to the old poisoning mechanism causing trouble. 
>> The -Wno-attribute-warning change here can be removed once Kim's new 
>> poisoning solution is integrated.
>> 
>> - -fno-omit-frame-pointer is added to gcc to stop the linker from emitting 
>> code without the frame pointer
>> - -flto is set to $(JOBS) instead of auto to better match what the user 
>> requested
>> - -Gy is passed to the Microsoft compiler. This does not fully fix LTO under 
>> Microsoft, but prevents warnings about -LTCG:INCREMENTAL at least
>
> Julian Waters has updated the pull request with a new target base due to a 
> merge or a rebase. The incremental webrev excludes the unrelated changes 
> brought in by the merge/rebase. The pull request contains 12 additional 
> commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into patch-16
>  - -fno-omit-frame-pointer in JvmFeatures.gmk
>  - Revert compilerWarnings_gcc.hpp
>  - General LTO fixes JvmFeatures.gmk
>  - Revert DISABLE_POISONING_STOPGAP compilerWarnings_gcc.hpp
>  - Merge branch 'openjdk:master' into patch-16
>  - Revert os.cpp
>  - Fix memory leak in jvmciEnv.cpp
>  - Stopgap fix in os.cpp
>  - Declaration fix in compilerWarnings_gcc.hpp
>  - ... and 2 more: https://git.openjdk.org/jdk/compare/873ad932...9d05cb8e

Argh, so it can't be replicated on Linux. Alright, I've troubled you enough by 
now, thank you so much for the help in testing Linux!

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PR Comment: https://git.openjdk.org/jdk/pull/22464#issuecomment-2774604658

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