[PATCH] D60852: Fix for bug 41512: lower INSERT_VECTOR_ELT(ZeroVec, 0, Elt) to SCALAR_TO_VECTOR(Elt) for all SSE flavors

[Serge Preis via Phabricator via llvm-commits]

Serge_Preis added a comment.

> If we are getting this right sometimes, then we might already have the transform that we want, but it is limited in some way that prevents getting the larger case. 
>  I doubt that the loop itself is needed to demonstrate the problem because I see 'movd' codegen even with a loop as long as it is not unrolled.

After more experimentation I tend to agree. Also the most basic case produces pinsrd even in a small kernel (https://gcc.godbolt.org/z/HAmNha), so will just create test out of it.


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https://reviews.llvm.org/D60852