re PR tree-optimization/71170 (ICE in rewrite_expr_tree, at tree-ssa-reassoc.c:3898)

re PR tree-optimization/71170 (ICE in rewrite_expr_tree, at tree-ssa-reassoc.c:3898)

gcc/ChangeLog:

2016-05-24  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR middle-end/71170
	* tree-ssa-reassoc.c (struct operand_entry): Add field stmt_to_insert.
	(add_to_ops_vec): Add stmt_to_insert.
	(add_repeat_to_ops_vec): Init stmt_to_insert.
	(insert_stmt_before_use): New.
	(transform_add_to_multiply): Remove mult_stmt insertion and add it to ops vector.
	(get_ops): Init stmt_to_insert.
	(maybe_optimize_range_tests): Likewise.
	(rewrite_expr_tree): Insert stmt_to_insert before use stmt.
	(rewrite_expr_tree_parallel): Likewise.
	(reassociate_bb): Likewise.

From-SVN: r236619