yonghong-song wrote:

> if JIT did 'sp -=' just before the call then it's broken. The code cannot 
> store into sp - X before sp -=, since IRQ will corrupt it. Hence my earlier 
> point that JIT has to insert 'sp -=' before the actual stores.

Ya. I should clarify. 'before the call' is not precise. The extra stack is 
allocated before the main loop (going through all insns). So we should be okay.



https://github.com/llvm/llvm-project/pull/189060
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