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

[Guoxiong Li]

Changeset: 49726ee3
Author:    Guoxiong Li <gli at openjdk.org>
Date:      2023-04-18 08:01:32 +0000
URL:       https://git.openjdk.org/jdk/commit/49726ee3a95023a912aacad0e3714eae146eed21

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

Reviewed-by: kvn, thartmann

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