[PATCH] D38316: [InstCombine] replace bitcast to scalar + insertelement with widening shuffle + vector bitcast

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> Right - I thought about that case, but I couldn't justify it if we need another IR instruction.

So how do you plan to fix x86 lowering for this case?  If we need a DAGCombine for this anyway, not sure there's much point to handling it in instcombine.


https://reviews.llvm.org/D38316