hg: hsx/hotspot-comp/hotspot: 7079626: x64 emits unnecessary REX prefix

[christian.thalinger at oracle.com]

Changeset: 381bf869f784
Author:    twisti
Date:      2011-08-17 05:14 -0700
URL:       http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/381bf869f784

7079626: x64 emits unnecessary REX prefix
Reviewed-by: kvn, iveresov, never

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