RFR: JDK-8315445: 8314748 causes crashes in x64 builds

[Andrew Haley]

The crash happens during this phase:
[2023-08-31T08:51:27,258Z] Optimizing the exploded image

This is the failure mode:

# Internal Error (src/hotspot/cpu/x86/macroAssembler_x86.cpp:2755), pid=20045, tid=20157
# assert(rscratch != noreg || always_reachable(src)) failed: missing
#
# JRE version: OpenJDK Runtime Environment (22.0+14) (fastdebug build 22-ea+14-963)
# Java VM: OpenJDK 64-Bit Server VM (fastdebug 22-ea+14-963, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x12f17b9] MacroAssembler::evmovdquq(XMMRegister, AddressLiteral, int, Register)+0x1a9

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Commit messages:
 - JDK-8315445: 8314748 causes crashes in x64 builds

Changes: https://git.openjdk.org/jdk/pull/15512/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15512&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315445
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15512.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15512/head:pull/15512

PR: https://git.openjdk.org/jdk/pull/15512