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regs.h (reg_n_max): Don't declare.

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* regs.h (reg_n_max): Don't declare.
	* flow.c (reg_n_max): Don't define.
	* regclass.c (renumber): Don't initialize to zero.
	(regno_allocated): Likewise.
	(reg_n_max): Define.
	(allocate_reg_info): Don't initialize unnecessarily.

From-SVN: r33374
This commit is contained in:
Mark Mitchell 2000-04-24 07:48:12 +00:00 committed by Mark Mitchell
parent 214701e2c3
commit da668e9c92
4 changed files with 35 additions and 32 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2000-04-24 Mark Mitchell <mark@codesourcery.com>
* regs.h (reg_n_max): Don't declare.
* flow.c (reg_n_max): Don't define.
* regclass.c (renumber): Don't initialize to zero.
(regno_allocated): Likewise.
(reg_n_max): Define.
(allocate_reg_info): Don't initialize unnecessarily.
Mon Apr 24 00:21:36 2000 Jeffrey A Law (law@cygnus.com)
* genattrtab.c (find_attr): Initialize unsigned_p, func_units_p

4
gcc/flow.c
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@ -221,10 +221,6 @@ int max_regno;
varray_type reg_n_info;
/* Size of the reg_n_info table. */
unsigned int reg_n_max;
/* Size of a regset for the current function,
in (1) bytes and (2) elements. */

52
gcc/regclass.c
View File

@ -1983,8 +1983,9 @@ auto_inc_dec_reg_p (reg, mode)
}
#endif
static short *renumber = (short *)0;
static size_t regno_allocated = 0;
static short *renumber;
static size_t regno_allocated;
static unsigned int reg_n_max;
/* Allocate enough space to hold NUM_REGS registers for the tables used for
reg_scan and flow_analysis that are indexed by the register number. If
@ -2003,7 +2004,6 @@ allocate_reg_info (num_regs, new_p, renumber_p)
size_t size_renumber;
size_t min = (new_p) ? 0 : reg_n_max;
struct reg_info_data *reg_data;
struct reg_info_data *reg_next;
if (num_regs > regno_allocated)
{
@ -2056,34 +2056,34 @@ allocate_reg_info (num_regs, new_p, renumber_p)
{
/* Loop through each of the segments allocated for the actual
reg_info pages, and set up the pointers, zero the pages, etc. */
for (reg_data = reg_info_head; reg_data; reg_data = reg_next)
for (reg_data = reg_info_head;
reg_data && reg_data->max_index >= min;
reg_data = reg_data->next)
{
size_t min_index = reg_data->min_index;
size_t max_index = reg_data->max_index;
size_t max = MIN (max_index, num_regs);
size_t local_min = min - min_index;
size_t i;
reg_next = reg_data->next;
if (min <= max_index)
if (reg_data->min_index > num_regs)
continue;
if (min < min_index)
local_min = 0;
if (!reg_data->used_p) /* page just allocated with calloc */
reg_data->used_p = 1; /* no need to zero */
else
bzero ((char *) &reg_data->data[local_min],
sizeof (reg_info) * (max - min_index - local_min + 1));
for (i = min_index+local_min; i <= max; i++)
{
size_t max = max_index;
size_t local_min = min - min_index;
size_t i;
if (min < min_index)
local_min = 0;
if (!reg_data->used_p) /* page just allocated with calloc */
reg_data->used_p = 1; /* no need to zero */
else
bzero ((char *) &reg_data->data[local_min],
sizeof (reg_info) * (max - min_index - local_min + 1));
for (i = min_index+local_min; i <= max; i++)
{
VARRAY_REG (reg_n_info, i) = &reg_data->data[i-min_index];
REG_BASIC_BLOCK (i) = REG_BLOCK_UNKNOWN;
renumber[i] = -1;
reg_pref_buffer[i].prefclass = (char) NO_REGS;
reg_pref_buffer[i].altclass = (char) NO_REGS;
}
VARRAY_REG (reg_n_info, i) = &reg_data->data[i-min_index];
REG_BASIC_BLOCK (i) = REG_BLOCK_UNKNOWN;
renumber[i] = -1;
reg_pref_buffer[i].prefclass = (char) NO_REGS;
reg_pref_buffer[i].altclass = (char) NO_REGS;
}
}
}

2
gcc/regs.h
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@ -60,8 +60,6 @@ typedef struct reg_info_def
extern varray_type reg_n_info;
extern unsigned int reg_n_max;
/* Indexed by n, gives number of times (REG n) is used or set.
References within loops may be counted more times. */