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git.ipfire.org Git - thirdparty/gcc.git/commit
re PR tree-optimization/66856 (ICE in compute_live_loop_exits, at tree-ssa-loop-manip.c:234)
2016-01-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/66856
* tree-vect-loop.c (vect_transform_loop): Free SLP instances here.
* tree-vect-slp.c (vect_free_slp_tree): Decrement stmt reference count.
(vect_create_new_slp_node): Increment stmt reference count.
(vect_get_and_check_slp_defs): Make sure stmts are nor already in
an SLP tree before swapping operands.
(vect_build_slp_tree): Likewise.
(destroy_bb_vec_info): Free stmt info after SLP instances.
* tree-vect-stmts.c (new_stmt_vec_info): Initialize reference count.
* tree-vectorizer.h (struct _stmt_vec_info): Add num_slp_uses field.
(STMT_VINFO_NUM_SLP_USES): New macro.
* gcc.dg/torture/pr66856-1.c: New testcase.
* gcc.dg/torture/pr66856-2.c: Likewise.
From-SVN: r232435