[PATCH] D149946: [LoongArch] Define `ual` feature and override `allowsMisalignedMemoryAccesses`

[WÁNG Xuěruì via Phabricator via cfe-commits]

xen0n added a comment.

>From a LoongArch developer's perspective, it may be better to only enable UAL for LA464 and other supporting models, instead of for the generic `loongarch64` model too. This is because although all server- and desktop-class LoongArch models have UAL, the embedded-class (Loongson-1 and Loongson-2 series' older models) doesn't, and some of them e.g. Loongson 2K1000LA are readily available on the market so they're arguably relevant. We don't want to generate misaligned memory accesses for those systems only to fall back to much slower emulation later.


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https://reviews.llvm.org/D149946