git: openjdk/jdk17u-dev: 8305690: [X86] Do not emit two REX prefixes in Assembler::prefix

[Jie Fu]

Changeset: 6a849743
Author:    Guoxiong Li <gli at openjdk.org>
Committer: Jie Fu <jiefu at openjdk.org>
Date:      2023-05-09 07:33:34 +0000
URL:       https://git.openjdk.org/jdk17u-dev/commit/6a8497437ad11c8afbe7f02390ab5491a9390277

8305690: [X86] Do not emit two REX prefixes in Assembler::prefix

Backport-of: 49726ee3a95023a912aacad0e3714eae146eed21

! src/hotspot/cpu/x86/assembler_x86.cpp