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author	Richard Guenther <rguenther@suse.de>
	Fri, 9 Jul 2010 11:24:09 +0000 (11:24 +0000)
committer	Richard Biener <rguenth@gcc.gnu.org>
	Fri, 9 Jul 2010 11:24:09 +0000 (11:24 +0000)
commit	dbfcc0597ce9ec0cd4b05b17f132b8680394eb83
tree	1fcafc2809dd670b86812169efbe8489bbd17817	tree
parent	8bcc87780adc7e6501de6ba406484af1b7b29340	commit \| diff

re PR middle-end/44852 (miscompilation (of e.g. newlib dtoa.c) after mem-ref2 merge)

2010-07-09 Richard Guenther <rguenther@suse.de>

PR tree-optimization/44852
* tree-ssa-alias.c: Include toplev.h for exact_log2.
(indirect_ref_may_alias_decl_p): Properly handle negative offsets
in MEM_REF.
(indirect_refs_may_alias_p): Likewise.
* Makefile.in (tree-ssa-alias.o): Add $(TOPLEV_H).

* gcc.c-torture/execute/pr44852.c: New testcase.

From-SVN: r161994

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/Makefile.in		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.c-torture/execute/pr44852.c	[new file with mode: 0644]	blob
gcc/tree-ssa-alias.c		diff \| blob \| blame \| history

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