fhahn wrote:

Thanks for taking a look @TNorthover! I tried to address the comments, but with 
them addressed it turned out to not really be feasible to go down that path. I 
changed the codegen back to use the slightly longer (but using instructions 
that are cheaper/less complex usually) below, with a comment about the 
alternative sequence using `ld1` and why it is not used at the moment. WDYT?
```
ldrb wX, [x0, #2]
ldrh wY, [x0]
orr wX, wY, wX, lsl #16
fmov s0, wX
```

https://github.com/llvm/llvm-project/pull/78632
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