RFR: 8248411: [aarch64] Insufficient error handling when CodeBuffer is exhausted

[Patric Hedlin]

On Tue, 20 Oct 2020 13:31:59 GMT, Patric Hedlin <phedlin at openjdk.org> wrote:

> Trampoline call generation (in the macro-assembler) may run out of CodeBuffer space without the proper error handling,
> resulting in asserts such as: #  Internal Error (.../open/src/hotspot/share/asm/codeBuffer.hpp:198), pid=845, tid=859
> #  assert(allocates2(pc)) failed: relocation addr must be in this section
> This update extends the error handling for such error cases to cover all uses of `trampoline_call()`, direct and
> indirect. Failure registration/recording is retained in the "**aarch64.ad**" file.

Testing tier1-3
Repeated testing with hs-tier1-3 using `-XX:+StressCodeBuffers`.
Repeated testing with `jtreg:compiler/profiling/spectrapredefineclass/Launcher.java` using `-XX:+StressCodeBuffers`.

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PR: https://git.openjdk.java.net/jdk/pull/765