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re PR tree-optimization/83435 (ICE in set_value_range, at tree-vrp.c:211) 

2018-01-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83435
	* graphite.c (canonicalize_loop_form): Ignore fake loop exit edges.
	* graphite-scop-detection.c (scop_detection::get_sese): Likewise.
	* tree-vrp.c (add_assert_info): Drop TREE_OVERFLOW if they appear.

	* gcc.dg/graphite/pr83435.c: New testcase.

From-SVN: r256535
This commit is contained in:
Richard Biener 2018-01-11 13:42:29 +00:00 committed by Richard Biener
parent dc6401818b
commit b0bd3e52c1
6 changed files with 41 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-01-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/83435
* graphite.c (canonicalize_loop_form): Ignore fake loop exit edges.
* graphite-scop-detection.c (scop_detection::get_sese): Likewise.
* tree-vrp.c (add_assert_info): Drop TREE_OVERFLOW if they appear.
2018-01-11 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

2
gcc/graphite-scop-detection.c
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@ -428,7 +428,7 @@ scop_detection::get_sese (loop_p loop)
edge scop_begin = loop_preheader_edge (loop);
edge scop_end = single_exit (loop);
if (!scop_end || (scop_end->flags & EDGE_COMPLEX))
if (!scop_end || (scop_end->flags & (EDGE_COMPLEX|EDGE_FAKE)))
return invalid_sese;
/* Include the BB with the loop-closed SSA PHI nodes.
canonicalize_loop_closed_ssa makes sure that is in proper shape. */

2
gcc/graphite.c
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@ -324,7 +324,7 @@ canonicalize_loop_form (void)
FOR_EACH_LOOP (loop, LI_FROM_INNERMOST)
{
edge e = single_exit (loop);
if (!e || (e->flags & EDGE_COMPLEX))
if (!e || (e->flags & (EDGE_COMPLEX|EDGE_FAKE)))
continue;
canonicalize_loop_closed_ssa (loop, e);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-01-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/83435
* gcc.dg/graphite/pr83435.c: New testcase.
2018-01-11 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

25
gcc/testsuite/gcc.dg/graphite/pr83435.c Normal file
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@ -0,0 +1,25 @@
/* { dg-do compile } */
/* { dg-options "-O -ftree-parallelize-loops=2 -floop-parallelize-all" } */
int yj, ax;
void
gf (signed char mp)
{
int *dh = &yj;
for (;;)
{
signed char sb;
for (sb = 0; sb < 1; sb -= 8)
{
}
mp &= mp <= sb;
if (mp == 0)
dh = &ax;
mp = 0;
*dh = 0;
}
}

2
gcc/tree-vrp.c
View File

@ -2786,6 +2786,8 @@ add_assert_info (vec<assert_info> &asserts,
assert_info info;
info.comp_code = comp_code;
info.name = name;
if (TREE_OVERFLOW_P (val))
val = drop_tree_overflow (val);
info.val = val;
info.expr = expr;
asserts.safe_push (info);