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| author | Sebastian Pop <sebastian.pop@amd.com> | 2009-11-25 05:18:35 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2009-11-25 05:18:35 +0000 |
| commit | 3899a0b221ee070c9c80ea5e95067e62ced273d6 (patch) | |
| tree | 4cd9ad61791620b1a14ae44b6ab0a261d941f2ac /gcc | |
| parent | e34e583538b1d9b828fa1415cae187f80576fc7f (diff) | |
| download | gcc-3899a0b221ee070c9c80ea5e95067e62ced273d6.zip gcc-3899a0b221ee070c9c80ea5e95067e62ced273d6.tar.gz gcc-3899a0b221ee070c9c80ea5e95067e62ced273d6.tar.bz2 | |
graphite-sese-to-poly.c (pdr_add_data_dimensions): Do not infer loop upper bounds for 1-element arrays at end of structures.
2009-10-20 Sebastian Pop <sebastian.pop@amd.com>
* graphite-sese-to-poly.c (pdr_add_data_dimensions): Do not infer
loop upper bounds for 1-element arrays at end of structures.
* tree-flow.h (array_at_struct_end_p): Declared.
* tree-ssa-loop-niter.c (array_at_struct_end_p): Not static anymore.
From-SVN: r154612
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog.graphite | 7 | ||||
| -rw-r--r-- | gcc/graphite-sese-to-poly.c | 10 | ||||
| -rw-r--r-- | gcc/tree-flow.h | 1 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 2 |
4 files changed, 15 insertions, 5 deletions
diff --git a/gcc/ChangeLog.graphite b/gcc/ChangeLog.graphite index c2a2f96..05bd2f1 100644 --- a/gcc/ChangeLog.graphite +++ b/gcc/ChangeLog.graphite @@ -1,5 +1,12 @@ 2009-10-20 Sebastian Pop <sebastian.pop@amd.com> + * graphite-sese-to-poly.c (pdr_add_data_dimensions): Do not infer + loop upper bounds for 1-element arrays at end of structures. + * tree-flow.h (array_at_struct_end_p): Declared. + * tree-ssa-loop-niter.c (array_at_struct_end_p): Not static anymore. + +2009-10-20 Sebastian Pop <sebastian.pop@amd.com> + * g++.dg/graphite/pr41305.C: New. 2009-10-20 Alexander Monakov <amonakov@ispras.ru> diff --git a/gcc/graphite-sese-to-poly.c b/gcc/graphite-sese-to-poly.c index 214dc8b..b2931d1 100644 --- a/gcc/graphite-sese-to-poly.c +++ b/gcc/graphite-sese-to-poly.c @@ -1728,10 +1728,12 @@ pdr_add_data_dimensions (ppl_Polyhedron_t accesses, data_reference_p dr, high = array_ref_up_bound (ref); - /* high - subscript >= 0 - XXX: 1-element arrays at end of structures may extend over their - declared size. */ - if (high && host_integerp (high, 0)) + /* high - subscript >= 0 */ + if (high && host_integerp (high, 0) + /* 1-element arrays at end of structures may extend over + their declared size. */ + && !(array_at_struct_end_p (ref) + && operand_equal_p (low, high, 0))) { ppl_new_Linear_Expression_with_dimension (&expr, accessp_nb_dims); ppl_set_coef (expr, subscript, -1); diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index bec184d..96e4aa9 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -728,6 +728,7 @@ tree find_loop_niter (struct loop *, edge *); tree loop_niter_by_eval (struct loop *, edge); tree find_loop_niter_by_eval (struct loop *, edge *); void estimate_numbers_of_iterations (void); +bool array_at_struct_end_p (tree); bool scev_probably_wraps_p (tree, tree, gimple, struct loop *, bool); bool convert_affine_scev (struct loop *, tree, tree *, tree *, gimple, bool); diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 14b44aa..d722210 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2612,7 +2612,7 @@ record_nonwrapping_iv (struct loop *loop, tree base, tree step, gimple stmt, allocated structure. If this is the case, the array may be allocated larger than its upper bound implies. */ -static bool +bool array_at_struct_end_p (tree ref) { tree base = get_base_address (ref); |