[llvm] [GlobalIsel] Transform build_vector(binop(_, C), ...) -> binop(bv, constant bv) (PR #73577)

[Thorsten Schütt via llvm-commits]

tschuett wrote:

> Should the RISC-V combine be moved to generic SelectionDAG? Seems weird to make it generic for GISel when it isn't generic for SelectionDAG.

That was discussed in https://github.com/llvm/llvm-project/pull/67358. The counter argument was cost models.

https://github.com/llvm/llvm-project/pull/73577