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Fix pdr accesses order 

2016-04-09  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/68953
	* graphite-sese-to-poly.c (pdr_add_memory_accesses): Order accesses from
	first to last subscript.

	* gcc.dg/graphite/pr68953.c: New test.

From-SVN: r234851
This commit is contained in:
Tom de Vries 2016-04-09 15:28:24 +00:00 committed by Tom de Vries
parent 138c3c1a78
commit 09bf990eb8
4 changed files with 42 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2016-04-09 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/68953
* graphite-sese-to-poly.c (pdr_add_memory_accesses): Order accesses from
first to last subscript.
2016-04-09 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/70586

2
gcc/graphite-sese-to-poly.c
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@ -672,7 +672,7 @@ pdr_add_memory_accesses (isl_map *acc, dr_info &dri)
aff = extract_affine (scop, afn,
isl_space_domain (isl_map_get_space (acc)));
acc = set_index (acc, i + 1, aff);
acc = set_index (acc, nb_subscripts - i , aff);
}
return isl_map_coalesce (acc);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-04-09 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/68953
* gcc.dg/graphite/pr68953.c: New test.
2016-04-09 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/70592

30
gcc/testsuite/gcc.dg/graphite/pr68953.c Normal file
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@ -0,0 +1,30 @@
/* { dg-do run } */
/* { dg-options "-O1 -floop-nest-optimize" } */
extern void abort (void);
int yu[4][1] = { { 1 }, { 2 }, { 3 }, { 4 } };
static void __attribute__((noinline,noclone))
foo (void)
{
int zh, ro;
for (zh = 0; zh < 2; ++zh)
for (ro = 0; ro < 3; ++ro)
yu[ro][0] = yu[zh + 1][0];
}
int
main (void)
{
foo ();
if (yu[0][0] != 2
|| yu[1][0] != 2
|| yu[2][0] != 2
|| yu[3][0] != 4)
abort ();
return 0;
}