RFR: 8327247: C2 uses up to 2GB of RAM to compile complex string concat in extreme cases [v4]

[Claes Redestad]

On Fri, 26 Apr 2024 09:42:06 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> Splitting out the ASM-based version from #18690 to push that first under the JBS (to help backporting). Keeping #18690 open to rebase and follow-up on this as a subtask. See discussion in that #18690 for more details, discussion and motivation for this.
>
> Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix nits, use iconst as intended

Running another round of sanity testing (tier1+2) before integration.

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PR Comment: https://git.openjdk.org/jdk/pull/18953#issuecomment-2079038010