Benjamin Kramer 6fac1fbf30 DAGCombiner: Fold a shuffle on CONCAT_VECTORS into a new CONCAT_VECTORS if possible.
This pattern occurs in SROA output due to the way vector arguments are lowered
on ARM.

The testcase from PR15525 now compiles into this, which is better than the code
we got with the old scalarrepl:
_Store:
	ldr.w	r9, [sp]
	vmov	d17, r3, r9
	vmov	d16, r1, r2
	vst1.8	{d16, d17}, [r0]
	bx	lr

Differential Revision: http://llvm-reviews.chandlerc.com/D647

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179106 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-09 17:41:43 +00:00
2013-04-09 04:48:40 +00:00
2013-04-05 20:00:35 +00:00
2012-10-09 23:48:34 +00:00
2013-04-05 20:00:35 +00:00
2013-03-18 17:47:33 +00:00
2013-03-18 17:47:33 +00:00
2013-02-22 19:19:41 +00:00

Low Level Virtual Machine (LLVM)
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