X86: Remove "i.rex" to eliminate extra conditional branch
Resulting code will do better without the extra conditional branch.
Remove "i.rex" to eliminate extra conditional branch.
gas/ChangeLog:
* config/tc-i386.c (establish_rex): Remove i.rex.
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index dc6d8bb..cb3d464 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -4308,7 +4308,7 @@
&& (i.op[first].regs->reg_flags & RegRex64) != 0)
|| (i.types[last].bitfield.class == Reg && i.types[last].bitfield.byte
&& (i.op[last].regs->reg_flags & RegRex64) != 0))
- && !i.rex && !is_apx_rex2_encoding () && !is_any_vex_encoding (&i.tm))
+ && !is_apx_rex2_encoding () && !is_any_vex_encoding (&i.tm))
i.rex |= REX_OPCODE;
/* For REX/REX2/EVEX prefix instructions, we need to convert old registers
