RFR: 8270179: Rename Amalloc_4

Sun Jul 11 23:35:02 UTC 2021

On Sun, 11 Jul 2021 23:27:33 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This renames Amalloc_4 to AmallocWords.  While I had to fix internal_malloc_4, which is a copy of Amalloc_4 (except with UseMallocOnly handling), I also made the change for
> JDK-8270217 Fix Arena::Amalloc to check for overflow better
> Tested with tier1 - all Oracle platforms and tier1-3 on linux-x64.

Why do we still have UseMallocOnly? There's one test for it but why.

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PR: https://git.openjdk.java.net/jdk/pull/4750