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re PR rtl-optimization/45570 (ICE: in cfg_preds_1, at sel-sched-ir.c:4584)

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PR rtl-optimization/45570
	* sel-sched-ir.c (cfg_preds_1): When walking out of the region, assert
	that we are pipelining outer loops.  Allow returning zero predecessors.
	* gcc.dg/pr45570.c: New test.

From-SVN: r165454
This commit is contained in:
Andrey Belevantsev 2010-10-14 11:56:47 +04:00 committed by Andrey Belevantsev
parent 262d82326e
commit 3e6a3f6fc3
4 changed files with 79 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2010-10-14 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/45570
* sel-sched-ir.c (cfg_preds_1): When walking out of the region,
assert that we are pipelining outer loops. Allow returning
zero predecessors.
2010-10-14 Andrey Belevantsev <abel@ispras.ru>
* sel-sched-ir.c (maybe_tidy_empty_bb): Simplify comment.

12
gcc/sel-sched-ir.c
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@ -4578,8 +4578,12 @@ cfg_preds_1 (basic_block bb, insn_t **preds, int *n, int *size)
basic_block pred_bb = e->src;
insn_t bb_end = BB_END (pred_bb);
/* ??? This code is not supposed to walk out of a region. */
gcc_assert (in_current_region_p (pred_bb));
if (!in_current_region_p (pred_bb))
{
gcc_assert (flag_sel_sched_pipelining_outer_loops
&& current_loop_nest);
continue;
}
if (sel_bb_empty_p (pred_bb))
cfg_preds_1 (pred_bb, preds, n, size);
@ -4592,7 +4596,9 @@ cfg_preds_1 (basic_block bb, insn_t **preds, int *n, int *size)
}
}
gcc_assert (*n != 0);
gcc_assert (*n != 0
|| (flag_sel_sched_pipelining_outer_loops
&& current_loop_nest));
}
/* Find all predecessors of BB and record them in PREDS and their number

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-10-14 Andrey Belevantsev <abel@ispras.ru>
PR rtl-optimization/45570
* gcc.dg/pr45570.c: New test.
2010-10-13 H.J. Lu <hongjiu.lu@intel.com>
* gcc.target/i386/recip-vec-sqrtf-avx.c: New.

58
gcc/testsuite/gcc.dg/pr45570.c Normal file
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@ -0,0 +1,58 @@
/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
/* { dg-options "O3 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops -ftracer" } */
void
parser_get_next_char (char c, int qm, char *p)
{
int quote_mode = 0;
for (; *p; p++)
{
if (qm)
{
if (quote_mode == 0 && *p == '"' && *(p - 1))
{
quote_mode = 1;
continue;
}
if (quote_mode && *p == '"' && *(p - 1))
quote_mode = 0;
}
if (quote_mode == 0 && *p == c && *(p - 1))
break;
}
}
void
parser_get_next_parameter (char *p)
{
parser_get_next_char (':', 1, p);
}
/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
/* { dg-options "O3 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops -ftracer" } */
void
parser_get_next_char (char c, int qm, char *p)
{
int quote_mode = 0;
for (; *p; p++)
{
if (qm)
{
if (quote_mode == 0 && *p == '"' && *(p - 1))
{
quote_mode = 1;
continue;
}
if (quote_mode && *p == '"' && *(p - 1))
quote_mode = 0;
}
if (quote_mode == 0 && *p == c && *(p - 1))
break;
}
}
void
parser_get_next_parameter (char *p)
{
parser_get_next_char (':', 1, p);
}