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Sanjay Patel 306bb76156 [x86] make horizontal binop matching clearer; NFCI
The instructions are complicated, so this code will
probably never be very obvious, but hopefully this
makes it better. 

As shown in PR39195:
https://bugs.llvm.org/show_bug.cgi?id=39195
...we need to improve the matching to not miss cases
where we're h-opping on 1 source vector, and that
should be a small patch after this rearranging.

llvm-svn: 343989
2018-10-08 18:08:02 +00:00
2018-08-09 22:05:19 +00:00
2016-01-26 21:29:08 +00:00
2018-06-18 12:22:17 +00:00
2018-09-22 01:01:03 +00:00

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