speed up Xtensa GAS port
Bob Wilson
bwilson@tensilica.com
Tue Dec 20 18:13:00 GMT 2005
I'm committing this patch to speed up the Xtensa port of GAS. It makes a minor
change to the order of fields in the "vliw_insn" structure so that most of the
fields can be zero'ed with a single memset call. It also adds a small
optimization for the common case of an instruction with a single operation slot.
Tested with no regressions for an xtensa-elf target.
2005-12-20 Sterling Augustine <sterling@tensilica.com>
* config/tc-xtensa.c (xg_find_narrowest_format): Optimize 1 slot case.
(xg_init_vinsn): Remove redundant initialization.
(xg_clear_vinsn): Zero all the slots with a single memset.
* config/xtensa-istack.h (vliw_insn): Move insnbuf field after slots.
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