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* 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.
This commit is contained in:
Bob Wilson 2005-12-20 18:13:32 +00:00
parent 0bcc32ae3b
commit 65738a7dbc
3 changed files with 15 additions and 7 deletions
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7
gas/ChangeLog
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@ -1,3 +1,10 @@
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.
2005-12-20 Nathan Sidwell <nathan@codesourcery.com>
* doc/t-mt.texi: Update MS1 to MT.

13
gas/config/tc-xtensa.c
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@ -6403,6 +6403,9 @@ xg_find_narrowest_format (vliw_insn *vinsn)
vliw_insn v_copy = *vinsn;
xtensa_opcode nop_opcode = xtensa_nop_opcode;
if (vinsn->num_slots == 1)
return xg_get_single_format (vinsn->slots[0].opcode);
for (format = 0; format < xtensa_isa_num_formats (isa); format++)
{
v_copy = *vinsn;
@ -11417,8 +11420,6 @@ xg_init_vinsn (vliw_insn *v)
for (i = 0; i < MAX_SLOTS; i++)
{
tinsn_init (&v->slots[i]);
v->slots[i].opcode = XTENSA_UNDEFINED;
v->slotbuf[i] = xtensa_insnbuf_alloc (isa);
if (v->slotbuf[i] == NULL)
as_fatal (_("out of memory"));
@ -11430,6 +11431,9 @@ static void
xg_clear_vinsn (vliw_insn *v)
{
int i;
memset (v, 0, offsetof (vliw_insn, insnbuf));
v->format = XTENSA_UNDEFINED;
v->num_slots = 0;
v->inside_bundle = FALSE;
@ -11438,10 +11442,7 @@ xg_clear_vinsn (vliw_insn *v)
debug_type = xt_saved_debug_type;
for (i = 0; i < MAX_SLOTS; i++)
{
memset (&v->slots[i], 0, sizeof (TInsn));
v->slots[i].opcode = XTENSA_UNDEFINED;
}
v->slots[i].opcode = XTENSA_UNDEFINED;
}

2
gas/config/xtensa-istack.h
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@ -89,10 +89,10 @@ expressionS *tinsn_get_tok (TInsn *, int);
typedef struct vliw_insn
{
xtensa_format format;
xtensa_insnbuf insnbuf;
int num_slots;
unsigned int inside_bundle;
TInsn slots[MAX_SLOTS];
xtensa_insnbuf insnbuf;
xtensa_insnbuf slotbuf[MAX_SLOTS];
} vliw_insn;