OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

loop.h (LOOP_INFO): New accessor macro. 

2000-01-25  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

	* loop.h (LOOP_INFO): New accessor macro.
	* basic-block.h (struct loop): Rename field `info' to `aux'.
	* loop.c (scan_loop): Replace loop->info with LOOP_INFO (loop).
	(prescan_loop, strength_reduce, check_dbra_loop, insert_bct): Likewise.
	* unroll.c (loop_iterations, unroll_loop): Likewise.

From-SVN: r31596
This commit is contained in:
Michael Hayes 2000-01-25 00:38:09 +00:00 committed by Michael Hayes
parent a1e3399aef
commit 52b3806475
5 changed files with 22 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2000-01-25 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* loop.h (LOOP_INFO): New accessor macro.
* basic-block.h (struct loop): Rename field `info' to `aux'.
* loop.c (scan_loop): Replace loop->info with LOOP_INFO (loop).
(prescan_loop, strength_reduce, check_dbra_loop, insert_bct): Likewise.
* unroll.c (loop_iterations, unroll_loop): Likewise.
2000-01-24 Christopher Faylor <cgf@cygnus.com>
* config/i386/t-cygwin: Accomodate new winsup directory layout

2
gcc/basic-block.h
View File

@ -274,7 +274,7 @@ struct loop
int invalid;
/* Auxiliary info specific to a pass. */
void *info;
void *aux;
/* The following are currently used by loop.c but they are likely to
disappear as loop.c is converted to use the CFG. */

16
gcc/loop.c
View File

@ -467,7 +467,7 @@ loop_optimize (f, dumpfile, unroll_p, bct_p)
/* Allocate and initialize auxiliary loop information. */
loops_info = xcalloc (loops->num, sizeof (struct loop_info));
for (i = 0; i < loops->num; i++)
loops->array[i].info = loops_info + i;
loops->array[i].aux = loops_info + i;
/* Now find all register lifetimes. This must be done after
find_and_verify_loops, because it might reorder the insns in the
@ -590,7 +590,7 @@ scan_loop (loop, unroll_p, bct_p)
register int i;
rtx loop_start = loop->start;
rtx loop_end = loop->end;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
rtx p;
/* 1 if we are scanning insns that could be executed zero times. */
int maybe_never = 0;
@ -2366,7 +2366,7 @@ constant_high_bytes (p, loop_start)
#endif
/* Scan a loop setting the elements `cont', `vtop', `loops_enclosed',
`has_call', `has_volatile', and `has_tablejump' within LOOP_INFO.
`has_call', `has_volatile', and `has_tablejump' within LOOP.
Set the global variables `unknown_address_altered',
`unknown_constant_address_altered', and `num_mem_sets'. Also, fill
in the array `loop_mems' and the list `loop_store_mems'. */
@ -2377,7 +2377,7 @@ prescan_loop (loop)
{
register int level = 1;
rtx insn;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
rtx start = loop->start;
rtx end = loop->end;
/* The label after END. Jumping here is just like falling off the
@ -3716,7 +3716,7 @@ strength_reduce (loop, insn_count, unroll_p, bct_p)
int past_loop_latch = 0;
/* Temporary list pointers for traversing loop_iv_list. */
struct iv_class *bl, **backbl;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
/* Ratio of extra register life span we can justify
for saving an instruction. More if loop doesn't call subroutines
since in that case saving an insn makes more difference
@ -7854,7 +7854,7 @@ check_dbra_loop (loop, insn_count)
int compare_and_branch;
rtx loop_start = loop->start;
rtx loop_end = loop->end;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
/* If last insn is a conditional branch, and the insn before tests a
register value, try to optimize it. Otherwise, we can't do anything. */
@ -9278,7 +9278,7 @@ insert_bct (loop)
unsigned HOST_WIDE_INT n_iterations;
rtx loop_start = loop->start;
rtx loop_end = loop->end;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
int loop_num = loop->num;
#if 0
@ -9374,7 +9374,7 @@ insert_bct (loop)
/* Mark all enclosing loops that they cannot use count register. */
for (outer_loop = loop; outer_loop; outer_loop = outer_loop->outer)
{
outer_loop_info = outer_loop->info;
outer_loop_info = LOOP_INFO (outer_loop);
outer_loop_info->used_count_register = 1;
}
instrument_loop_bct (loop_start, loop_end, GEN_INT (n_iterations));

3
gcc/loop.h
View File

@ -21,6 +21,9 @@ Boston, MA 02111-1307, USA. */
#include "varray.h"
#include "basic-block.h"
/* Get the loop info pointer of a loop. */
#define LOOP_INFO(LOOP) ((struct loop_info *) (LOOP)->aux)
/* Get the luid of an insn. Catch the error of trying to reference the LUID
of an insn added during loop, since these don't have LUIDs. */

4
gcc/unroll.c
View File

@ -256,7 +256,7 @@ unroll_loop (loop, insn_count, end_insert_before, strength_reduce_p)
rtx last_loop_insn;
rtx loop_start = loop->start;
rtx loop_end = loop->end;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
/* Don't bother unrolling huge loops. Since the minimum factor is
two, loops greater than one half of MAX_UNROLLED_INSNS will never
@ -3635,7 +3635,7 @@ loop_iterations (loop)
int unsigned_p, compare_dir, final_larger;
rtx last_loop_insn;
rtx reg_term;
struct loop_info *loop_info = loop->info;
struct loop_info *loop_info = LOOP_INFO (loop);
loop_info->n_iterations = 0;
loop_info->initial_value = 0;