paulwalker-arm wrote:

I'll need to look to see if the TBAA metadata we're adding matches what we 
initially envisaged but my gut feeling matches @arsenm.

I'm assuming the original code emitted an error, something along the lines of 
"no version of svst1 available for long long*", which you've "fixed" by 
introducing a cast that breaks strict aliasing rules.

I recall warnings relating to strict aliasing violations being hit and miss? 
but perhaps we can do better.

https://github.com/llvm/llvm-project/pull/107793
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