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author	Richard Biener <rguenther@suse.de>
	Fri, 26 Aug 2016 12:33:43 +0000 (12:33 +0000)
committer	Richard Biener <rguenth@gcc.gnu.org>
	Fri, 26 Aug 2016 12:33:43 +0000 (12:33 +0000)
commit	ebfa15ab654738fcc926a506b3788a303958fa02
tree	36a9fb525064b262301c1f5214a7264dd4b939f2	tree \| snapshot
parent	52066eae5d3dd6b7c0a1b843469582dbdbb941eb	commit \| diff

re PR tree-optimization/69047 (memcpy is not as optimized as union is)

2016-08-26 Richard Biener <rguenther@suse.de>

PR tree-optimization/69047
* tree-ssa.c (maybe_rewrite_mem_ref_base): Handle general bitfield
extracts similar to what FRE does.
(non_rewritable_mem_ref_base): Likewise.

* gcc.dg/pr69047.c: New testcase.

From-SVN: r239778

gcc/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/ChangeLog		diff \| blob \| blame \| history
gcc/testsuite/gcc.dg/pr69047.c	[new file with mode: 0644]	blob
gcc/tree-ssa.c		diff \| blob \| blame \| history

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