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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
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