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reginfo.c (max_regno_since_last_resize): New.

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2012-09-27  Vladimir Makarov  <vmakarov@redhat.com>

	* reginfo.c (max_regno_since_last_resize): New.
	(reg_preferred_class, reg_alternate_class): Add assert.
	(allocate_reg_info): Initialize allocated reg info.
	(resize_reg_info): Make bigger reg_info and initialize new memory.
	(reginfo_init): Initialize max_regno_since_last_resize.
	(setup_reg_classes): Change assert.

From-SVN: r192047
This commit is contained in:
Vladimir Makarov 2012-10-03 19:13:01 +00:00 • committed by Vladimir Makarov
parent 953ac96606
commit dfc0f53a96
2 changed files with 43 additions and 10 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2012-09-27 Vladimir Makarov <vmakarov@redhat.com>
* reginfo.c (max_regno_since_last_resize): New.
(reg_preferred_class, reg_alternate_class): Add assert.
(allocate_reg_info): Initialize allocated reg info.
(resize_reg_info): Make bigger reg_info and initialize new memory.
(reginfo_init): Initialize max_regno_since_last_resize.
(setup_reg_classes): Change assert.
2012-10-03 Andrew W. Nosenko <andrew.w.nosenko@gmail.com>
* config/i386/driver-i386.c (host_detect_local_cpu): Fix logic

44
gcc/reginfo.c
View file

@ -839,6 +839,8 @@ static struct reg_pref *reg_pref;
/* Current size of reg_info. */
static int reg_info_size;
/* Max_reg_num still last resize_reg_info call. */
static int max_regno_since_last_resize;
/* Return the reg_class in which pseudo reg number REGNO is best allocated.
This function is sometimes called before the info has been computed.
@ -849,6 +851,7 @@ reg_preferred_class (int regno)
if (reg_pref == 0)
return GENERAL_REGS;
gcc_assert (regno < reg_info_size);
return (enum reg_class) reg_pref[regno].prefclass;
}
@ -858,6 +861,7 @@ reg_alternate_class (int regno)
if (reg_pref == 0)
return ALL_REGS;
gcc_assert (regno < reg_info_size);
return (enum reg_class) reg_pref[regno].altclass;
}
@ -868,45 +872,64 @@ reg_allocno_class (int regno)
if (reg_pref == 0)
return NO_REGS;
gcc_assert (regno < reg_info_size);
return (enum reg_class) reg_pref[regno].allocnoclass;
}
/* Allocate space for reg info. */
/* Allocate space for reg info and initilize it. */
static void
allocate_reg_info (void)
{
reg_info_size = max_reg_num ();
int i;
max_regno_since_last_resize = max_reg_num ();
reg_info_size = max_regno_since_last_resize * 3 / 2 + 1;
gcc_assert (! reg_pref && ! reg_renumber);
reg_renumber = XNEWVEC (short, reg_info_size);
reg_pref = XCNEWVEC (struct reg_pref, reg_info_size);
memset (reg_renumber, -1, reg_info_size * sizeof (short));
for (i = 0; i < reg_info_size; i++)
{
reg_pref[i].prefclass = GENERAL_REGS;
reg_pref[i].altclass = ALL_REGS;
reg_pref[i].allocnoclass = GENERAL_REGS;
}
}
/* Resize reg info. The new elements will be uninitialized. Return
TRUE if new elements (for new pseudos) were added. */
/* Resize reg info. The new elements will be initialized. Return TRUE
if new pseudos were added since the last call. */
bool
resize_reg_info (void)
{
int old;
int old, i;
bool change_p;
if (reg_pref == NULL)
{
allocate_reg_info ();
return true;
}
if (reg_info_size == max_reg_num ())
return false;
change_p = max_regno_since_last_resize != max_reg_num ();
max_regno_since_last_resize = max_reg_num ();
if (reg_info_size >= max_reg_num ())
return change_p;
old = reg_info_size;
reg_info_size = max_reg_num ();
reg_info_size = max_reg_num () * 3 / 2 + 1;
gcc_assert (reg_pref && reg_renumber);
reg_renumber = XRESIZEVEC (short, reg_renumber, reg_info_size);
reg_pref = XRESIZEVEC (struct reg_pref, reg_pref, reg_info_size);
memset (reg_pref + old, -1,
(reg_info_size - old) * sizeof (struct reg_pref));
memset (reg_renumber + old, -1, (reg_info_size - old) * sizeof (short));
for (i = old; i < reg_info_size; i++)
{
reg_pref[i].prefclass = GENERAL_REGS;
reg_pref[i].altclass = ALL_REGS;
reg_pref[i].allocnoclass = GENERAL_REGS;
}
return true;
}
@ -938,6 +961,7 @@ reginfo_init (void)
/* This prevents dump_reg_info from losing if called
before reginfo is run. */
reg_pref = NULL;
reg_info_size = max_regno_since_last_resize = 0;
/* No more global register variables may be declared. */
no_global_reg_vars = 1;
return 1;
@ -964,7 +988,7 @@ struct rtl_opt_pass pass_reginfo_init =
/* Set up preferred, alternate, and cover classes for REGNO as
/* Set up preferred, alternate, and allocno classes for REGNO as
PREFCLASS, ALTCLASS, and ALLOCNOCLASS. */
void
setup_reg_classes (int regno,
@ -973,7 +997,7 @@ setup_reg_classes (int regno,
{
if (reg_pref == NULL)
return;
gcc_assert (reg_info_size == max_reg_num ());
gcc_assert (reg_info_size >= max_reg_num ());
reg_pref[regno].prefclass = prefclass;
reg_pref[regno].altclass = altclass;
reg_pref[regno].allocnoclass = allocnoclass;