Integrated: 8329257: AIX: Switch HOTSPOT_TOOLCHAIN_TYPE from xlc to gcc

[Joachim Kern]

On Thu, 28 Mar 2024 16:50:20 GMT, Joachim Kern <jkern at 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

This pull request has now been integrated.

Changeset: 3f1d9c44
Author:    Joachim Kern <jkern at openjdk.org>
Committer: Martin Doerr <mdoerr at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/3f1d9c441ea98910d9483e133bccfac784db393d
Stats:     256 lines in 15 files changed: 8 ins; 212 del; 36 mod

8329257: AIX: Switch HOTSPOT_TOOLCHAIN_TYPE from xlc to gcc

Reviewed-by: jwaters, stuefe, kbarrett, mdoerr

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PR: https://git.openjdk.org/jdk/pull/18536