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loop.c (loop_optimize): Allocate loop_info structure for each loop prior to calling scan_loop.

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* loop.c (loop_optimize): Allocate loop_info structure for each loop
	prior to calling scan_loop.

From-SVN: r31508
This commit is contained in:
Michael Hayes 2000-01-19 20:10:00 +00:00 committed by Michael Hayes
parent eda44c7832
commit 7845896296
2 changed files with 14 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-01-20 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* loop.c (loop_optimize): Allocate loop_info structure for each loop
prior to calling scan_loop.
Wed Jan 19 19:54:38 2000 J"orn Rennecke <amylaar@cygnus.co.uk> Wed Jan 19 19:54:38 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
* sh.c (prepare_scc_operands): Abort if no compare insn is available. * sh.c (prepare_scc_operands): Abort if no compare insn is available.

12
gcc/loop.c
View File

@ -510,15 +510,21 @@ loop_optimize (f, dumpfile, unroll_p, bct_p)
this prevents low overhead loop instructions from being used. */ this prevents low overhead loop instructions from being used. */
indirect_jump_in_function = indirect_jump_in_function_p (f); indirect_jump_in_function = indirect_jump_in_function_p (f);
/* Now scan the loops, last ones first, since this means inner ones are done /* Allocate and initialize auxiliary loop information. */
before outer ones. */
for (i = max_loop_num - 1; i >= 0; i--) for (i = max_loop_num - 1; i >= 0; i--)
{ {
struct loop *loop = &loops->array[i]; struct loop *loop = &loops->array[i];
loop->info = (struct loop_info *) alloca (sizeof (struct loop_info)); loop->info = (struct loop_info *) alloca (sizeof (struct loop_info));
memset (loop->info, 0, sizeof (struct loop_info)); memset (loop->info, 0, sizeof (struct loop_info));
}
/* Now scan the loops, last ones first, since this means inner ones are done
before outer ones. */
for (i = max_loop_num - 1; i >= 0; i--)
{
struct loop *loop = &loops->array[i];
if (! loop->invalid && loop->end) if (! loop->invalid && loop->end)
scan_loop (loop, unroll_p, bct_p); scan_loop (loop, unroll_p, bct_p);
} }