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author	Richard Biener <rguenther@suse.de>
	Fri, 4 May 2018 07:25:54 +0000 (07:25 +0000)
committer	Richard Biener <rguenth@gcc.gnu.org>
	Fri, 4 May 2018 07:25:54 +0000 (07:25 +0000)
commit	9b5713f7ce06d6f4c0df7410352623573d2506ea
tree	eba13e4f2bd5af58b7b12a026ef0d945237cb5f8	tree \| snapshot
parent	047823853d8324eab7d6ad8f266ee5395c4a76ff	commit \| diff

re PR lto/85574 (LTO bootstapped binaries differ)

2018-05-04 Richard Biener <rguenther@suse.de>

PR middle-end/85574
* fold-const.c (negate_expr_p): Restrict negation of operand
zero of a division to when we know that can happen without
overflow.
(fold_negate_expr_1): Likewise.

* gcc.dg/torture/pr85574.c: New testcase.
* gcc.dg/torture/pr57656.c: Use dg-additional-options.

From-SVN: r259922

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/fold-const.c		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/torture/pr57656.c		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/torture/pr85574.c	[new file with mode: 0644]	blob

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