SBCL Internals : SB

SBCL Internals
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An SB (Storage Base) represents a physical storage resource such as a register set or stack frame. Storage bases for non-global resources such as the stack are considered relative to the environment that the TN is allocated in. Packing conflict information is kept in the storage base, but non-packed storage resources such as closure environments also have storage bases.

Some storage bases might be

General purpose registers
Floating point registers
Boxed control stack environment
Unboxed number stack environment
Closure environment

Page in this topic: SC

Also linked from: number stack

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