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author	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Wed, 4 Jan 2012 09:47:12 +0000 (09:47 +0000)
committer	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Wed, 4 Jan 2012 09:47:12 +0000 (09:47 +0000)
commit	b4c39a3787c483b560c757b948ebc24cc2add0df
tree	bf057bb8c073169669076383bed0f487007bfd0a	tree \| snapshot
parent	aa3ce5e4c5836277ab342e20281bfb76ab4b52f4	commit \| diff

2012-01-04 Richard Guenther <rguenther@suse.de>

PR tree-optimization/49651
* tree-ssa-structalias.c (type_can_have_subvars): New function.
(var_can_have_subvars): Use it.
(get_constraint_for_1): Only consider subfields if there
can be any.

* gcc.dg/tree-ssa/pta-ptrarith-1.c: Adjust.
* gcc.dg/tree-ssa/pta-ptrarith-2.c: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182865 138bc75d-0d04-0410-961f-82ee72b054a4

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gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c		diff \| blob \| history
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