[PATCH] D80131: [x86] favor vector constant load to avoid GPR to XMM transfer, part 2

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Ideally we'd have a way to fold vzext_load ops inside X86InstrInfo::foldMemoryOperandCustom (by zero padding the constant pool entry where necessary) but I'm not certain how easy that is.

So we probably want to go with this variant (sorry for the wild goose chase).

@craig.topper any thoughts?


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  https://reviews.llvm.org/D80131/new/

https://reviews.llvm.org/D80131