[Constant Evaluator] Add support for interpreting SIL code with partial applies (i.e., closure creations). #27640
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partial applies (i.e., closure creations). A new SymbolicValue: SymbolicClosure represents a closure. It tracks the SILFunction corresponding to the target of the closure and the SIL and Symbolic Values of the captured arguments. The representation does not impose that all captured values must have an associated symbolic value. This allows the evaluator to track creations of closures whose captured arguments or bodies are not constant evaluable. This commit does not add support for closure applications. It only adds suppport for closure creations, which correspond to partial_apply instructions in SIL.
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A new SymbolicValue: SymbolicClosure represents a closure. It
tracks the SILFunction corresponding to the target of the closure
and the SIL and Symbolic Values of the captured arguments. The
representation does not impose that all captured values must have an
associated symbolic value. This allows the evaluator to track
creations of closures whose captured arguments or bodies are not
constant evaluable.
This commit does not add support for closure applications. It only
adds suppport for closure creations, which correspond to partial_apply
instructions in SIL.