Erik Eckstein 1559fe333f SIL: a new library intrinsic to "finalize" array literals ...

For COW support in SIL it's required to "finalize" array literals.
_finalizeUninitializedArray is a compiler known stdlib function which is called after all elements of an array literal are stored.
This runtime function marks the array literal as finished.

  %uninitialized_result_tuple = apply %_allocateUninitializedArray(%count)
  %mutable_array = tuple_extract %uninitialized_result_tuple, 0
  %elem_base_address = tuple_extract %uninitialized_result_tuple, 1
  ...
  store %elem_0 to %elem_addr_0
  store %elem_1 to %elem_addr_1
  ...
  %final_array = apply %_finalizeUninitializedArray(%mutable_array)

In this commit _finalizeUninitializedArray is still a no-op because the COW support is not used in the Array implementation yet.

2020-06-08 10:24:29 +02:00

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