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author	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Thu, 16 Oct 2014 10:13:52 +0000 (10:13 +0000)
committer	rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
	Thu, 16 Oct 2014 10:13:52 +0000 (10:13 +0000)
commit	fc8021097ec7542658f7b035604de66387c3d50e
tree	20fc664da392c7860ee5505c631575ae25f7fc13	tree
parent	520fefde3c47d8d12c08512244a4d838b1cc41c3	commit \| diff

2014-10-16 Richard Biener <rguenther@suse.de>

PR tree-optimization/63168
* tree-cfg.c (gimple_can_merge_blocks_p): Only protect
latches if after merging they are no longer simple.
* cfghooks.c (merge_blocks): Handle merging a latch block
into another block.

* gcc.dg/tree-ssa/loop-40.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216304 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/cfghooks.c		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/tree-ssa/loop-40.c	[new file with mode: 0644]	blob
gcc/tree-cfg.c		diff \| blob \| blame \| history

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