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2 Commits

Author SHA1 Message Date
Erik Eckstein
e77e2bcff7 IRGen: don't initialize the object headers of bare objects 
For `alloc_ref [bare] [stack]` and `global_value [bare]` omit the object header initialization.
The `bare` flag means that the object header is not used.

This was already done with a peephole optimization inside IRGen for `global_value`. But now rely on the SIL `bare` flag.
 2023-06-29 06:57:05 +02:00
Erik Eckstein
55c8c433c0 SILOptimizer: add the StripObjectHeader optimization pass 
It sets the `[bare]` attribute for `alloc_ref` and `global_value` instructions if their header (reference count and metatype) is not used throughout the lifetime of the object.
 2023-06-29 06:57:05 +02:00