[Patch] Use two source permute for vector initialization (PR 85692)

[Allan Sandfeld Jensen]

On Dienstag, 8. Mai 2018 12:42:33 CEST Richard Biener wrote:
> On Tue, May 8, 2018 at 12:37 PM, Allan Sandfeld Jensen
> 
> <linux@carewolf.com> wrote:
> > I have tried to fix PR85692 that I opened.
> 
> Please add a testcase as well.  It also helps if you shortly tell what
> the patch does
> in your mail.
> 
Okay. I have updated the patch with a test-case based on my motivating 
examples. The patch just extends patching a vector construction to not just a 
single source permute instruction, but also a two source permute instruction.
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