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re PR tree-optimization/69719 (wrong code at -O3 on x86_64-linux-gnu) 

2016-02-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69719
	* tree-vect-data-refs.c (vect_prune_runtime_alias_test_list):
	Adjust previous fix by ensuring that dr_a1 is left of dr_a2.

From-SVN: r233262
This commit is contained in:
Richard Biener 2016-02-10 08:36:03 +00:00 committed by Richard Biener
parent 0d99886f66
commit 6cd8854e3d
2 changed files with 11 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-02-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/69719
* tree-vect-data-refs.c (vect_prune_runtime_alias_test_list):
Adjust previous fix by ensuring that dr_a1 is left of dr_a2.
2016-02-09 Andrew Pinski <apinski@cavium.com>
PR tree-opt/69282

7
gcc/tree-vect-data-refs.c
View File

@ -3081,9 +3081,12 @@ vect_prune_runtime_alias_test_list (loop_vec_info loop_vinfo)
|| !tree_fits_shwi_p (dr_a2->offset))
continue;
/* Make sure dr_a1 starts left of dr_a2. */
if (tree_int_cst_lt (dr_a2->offset, dr_a1->offset))
std::swap (*dr_a1, *dr_a2);
unsigned HOST_WIDE_INT diff
= absu_hwi (tree_to_shwi (dr_a2->offset)
- tree_to_shwi (dr_a1->offset));
= tree_to_shwi (dr_a2->offset) - tree_to_shwi (dr_a1->offset);
/* Now we check if the following condition is satisfied: