[PATCH] D56490: [x86] minimal fix for horizontal binop matching for 256-bit vectors (PR40243)

[Sanjay Patel via Phabricator via llvm-commits]

spatel abandoned this revision.
spatel added a comment.

Abandoning - the original patch was already reviewed, so I went ahead and committed that + a similar fix as this patch implements. 
That fixes all of the h-op miscompile problems that I am aware of. 
I did eventually convince myself that the last section is safe based on the output of existing regression tests.


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  https://reviews.llvm.org/D56490/new/

https://reviews.llvm.org/D56490