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re PR bootstrap/87134 (SEGV in cc1 caused by r263875)

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2018-09-13  Richard Biener  <rguenther@suse.de>

	PR bootstrap/87134
	* tree-ssa-sccvn.c (vn_nary_op_insert_into): Fix assert.
	(vn_nary_op_insert_pieces_predicated): Do not write useless
	valid_dominated_by_p entry outside of the allocated storage.

From-SVN: r264268
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Richard Biener 2018-09-13 11:31:58 +00:00 committed by Richard Biener
parent 67295b6837
commit 2aa4cc744f
2 changed files with 8 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-09-13 Richard Biener <rguenther@suse.de>
PR bootstrap/87134
* tree-ssa-sccvn.c (vn_nary_op_insert_into): Fix assert.
(vn_nary_op_insert_pieces_predicated): Do not write useless
valid_dominated_by_p entry outside of the allocated storage.
2018-09-13 Omar Sandoval <osandov@osandov.com>
Tom de Vries <tdevries@suse.de>

4
gcc/tree-ssa-sccvn.c
View File

@ -3036,8 +3036,7 @@ vn_nary_op_insert_into (vn_nary_op_t vno, vn_nary_op_table_type *table,
vno->hashcode = vn_nary_op_compute_hash (vno);
gcc_assert (! vno->predicated_values
|| (! vno->u.values->next
&& vno->u.values->valid_dominated_by_p[0] != EXIT_BLOCK
&& vno->u.values->valid_dominated_by_p[1] == EXIT_BLOCK));
&& vno->u.values->n == 1));
}
slot = table->find_slot_with_hash (vno, vno->hashcode, INSERT);
@ -3216,7 +3215,6 @@ vn_nary_op_insert_pieces_predicated (unsigned int length, enum tree_code code,
vno1->u.values->result = result;
vno1->u.values->n = 1;
vno1->u.values->valid_dominated_by_p[0] = pred_e->dest->index;
vno1->u.values->valid_dominated_by_p[1] = EXIT_BLOCK;
return vn_nary_op_insert_into (vno1, valid_info->nary, true);
}