On Tue, 2 Apr 2024 16:14:12 GMT, Joachim Kern <jk...@openjdk.org> wrote:

>> As of [JDK-8325880](https://bugs.openjdk.org/browse/JDK-8325880), building 
>> the JDK requires version 17 of IBM Open XL C/C++ (xlc). This is in effect 
>> clang by another name, and it uses the clang toolchain in the JDK build. 
>> Thus the old xlc toolchain was removed by 
>> [JDK-8327701](https://bugs.openjdk.org/browse/JDK-8327701).
>> Now we also switch the HOTSPOT_TOOLCHAIN_TYPE from xlc to gcc, removing the 
>> last xlc rudiment.
>> This means merging the AIX specific content of 
>> utilities/globalDefinitions_xlc.hpp and utilities/compilerWarnings_xlc.hpp 
>> into the corresponding gcc files on the on side and removing the 
>> defined(TARGET_COMPILER_xlc) blocks in the code, because the 
>> defined(TARGET_COMPILER_gcc) blocks work out of the box for the new AIX 
>> compiler.
>> The rest of the changes are needed because of using 
>> utilities/compilerWarnings_gcc.hpp the compiler is much more nagging about 
>> ill formatted printf
>
> Joachim Kern has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   version check not needed anymore

The build change look trivially fine. And allow me to show my appreciation for 
the hotspot code cleanup! (But note that this is not a review of that part).

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PR Review: https://git.openjdk.org/jdk/pull/18536#pullrequestreview-1976222691

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