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re PR tree-optimization/27332 (ICE in try_interchange_loops with -ftree-loop-linear) 

PR middle-end/27332
	* tree-loop-linear.c (try_interchange_loops): Test for 
	no data dependences.

From-SVN: r113856
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Sebastian Pop 2006-05-17 14:47:43 +02:00 committed by Sebastian Pop
parent bfaacea7f5
commit 9cb8f1bac5
2 changed files with 9 additions and 0 deletions
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@ -1,3 +1,9 @@
2006-05-17 Sebastian Pop <pop@cri.ensmp.fr>
PR middle-end/27332
* tree-loop-linear.c (try_interchange_loops): Test for
no data dependences.
2006-05-17 Zdenek Dvorak <dvorakz@suse.cz>
PR tree-optimization/27548

3
gcc/tree-loop-linear.c
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@ -178,6 +178,9 @@ try_interchange_loops (lambda_trans_matrix trans,
unsigned int nb_deps_not_carried_by_i, nb_deps_not_carried_by_j;
struct data_dependence_relation *ddr;
if (VEC_length (ddr_p, dependence_relations) == 0)
return trans;
/* When there is an unknown relation in the dependence_relations, we
know that it is no worth looking at this loop nest: give up. */
ddr = VEC_index (ddr_p, dependence_relations, 0);