[PATCH] D56450: [x86] fix horizontal binop matching for 256-bit vectors (PR40243)

[Sanjay Patel via Phabricator via llvm-commits]

spatel marked an inline comment as done.
spatel added inline comments.


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Comment at: lib/Target/X86/X86ISelLowering.cpp:7925
 
     if (i * 2 < NumElts) {
       if (V0.isUndef()) {
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In case it's not clear (it took me a long time to spot this), this is the logic difference in the new matcher (along with nested loops). See line 8268 in this patch.


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  https://reviews.llvm.org/D56450/new/

https://reviews.llvm.org/D56450