David Green f55d96b9a2 [DAG][AArch64] Handle vector types when expanding sdiv/udiv into mulh ...

The aarch64 backend will benefit from expanding 64vector sdiv/udiv into mulh
using shift(mul(ext, ext)), as the larger type size is legal and the mul(ext,
ext) can efficiently use smull/umull instructions. This extends the existing
code in GetMULHS to handle vector types for it.

Differential Revision: https://reviews.llvm.org/D154049

2023-07-02 15:02:52 +01:00

423 KiB

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