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re PR middle-end/37828 ([graphite] ICE in expand_scalar_variables_expr, at graphite.c:3421 with -floop-block)

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2008-10-15  Sebastian Pop  <sebastian.pop@amd.com>
    	    Harsha Jagasia  <harsha.jagasia@amd.com>

	PR tree-optimization/37828
	* testsuite/gcc.dg/graphite/pr37828.c: New.
	* graphite.c (graphite_trans_loop_block): Do not loop block
	single nested loops.


Co-Authored-By: Harsha Jagasia <harsha.jagasia@amd.com>

From-SVN: r141142
This commit is contained in:
Sebastian Pop 2008-10-15 16:17:45 +00:00 committed by Sebastian Pop
parent 36174c82ee
commit 575da9be0d
4 changed files with 47 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2008-10-15 Sebastian Pop <sebastian.pop@amd.com>
Harsha Jagasia <harsha.jagasia@amd.com>
PR tree-optimization/37828
* graphite.c (graphite_trans_loop_block): Do not loop block
single nested loops.
2008-10-15 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/37686

12
gcc/graphite.c
View File

@ -4767,13 +4767,19 @@ graphite_trans_loop_block (VEC (graphite_bb_p, heap) *bbs, int loops)
/* TODO: - Calculate the stride size automatically. */
int stride_size = 64;
/* It makes no sense to block a single loop. */
for (i = 0; VEC_iterate (graphite_bb_p, bbs, i, gb); i++)
if (gbb_nb_loops (gb) < 2)
return false;
for (i = 0; VEC_iterate (graphite_bb_p, bbs, i, gb); i++)
transform_done |= graphite_trans_bb_block (gb, stride_size, loops);
return transform_done;
}
/* Loop block all basic blocks of SCOP. */
/* Loop block all basic blocks of SCOP. Return false when the
transform is not performed. */
static bool
graphite_trans_scop_block (scop_p scop)
@ -4790,10 +4796,10 @@ graphite_trans_scop_block (scop_p scop)
lambda_vector last_schedule = lambda_vector_new (max_schedule);
if (VEC_length (graphite_bb_p, SCOP_BBS (scop)) == 0)
return transform_done;
return false;
/* Get the data of the first bb. */
gb = VEC_index (graphite_bb_p, SCOP_BBS (scop), 0);
gb = VEC_index (graphite_bb_p, SCOP_BBS (scop), 0);
last_nb_loops = gbb_nb_loops (gb);
lambda_vector_copy (GBB_STATIC_SCHEDULE (gb), last_schedule,
last_nb_loops + 1);

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2008-10-15 Sebastian Pop <sebastian.pop@amd.com>
Harsha Jagasia <harsha.jagasia@amd.com>
PR tree-optimization/37828
* testsuite/gcc.dg/graphite/pr37828.c: New.
2008-10-15 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/37686

25
gcc/testsuite/gcc.dg/graphite/pr37828.c Normal file
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@ -0,0 +1,25 @@
/* { dg-options "-O2 -floop-block" } */
typedef struct foo
{
struct foo **Node;
} foo;
static int sort_and_split (foo **Root, foo **Finite, long first)
{
foo *cd;
long i;
for (i = 0; i < first; i++)
cd->Node[i] = Finite[first+i];
sort_and_split(Root, Finite, first);
return (0);
}
void Build_foo(foo **Root, foo **Finite, foo **Infinite)
{
long low, high;
while (sort_and_split(Root, Finite, low) == 0);
}