At the moment, bailouts are only spilling doubles, these doubles are currently being interpreted either as a float32 or as a float64. As we have no idea during the bailout how the registers would be interepted, we might have to spill the full content of SIMD registers in order to be able to recover these value within the Snpashot. In addition, we should change the MachineState such that we read the right values, and can read SIMD registers as well.

Bailouts are using the same mechanism as Safepoints for pushing registers on the stack. Thus this issue is a duplicate of Bug 1112164.