Andrew Kelley 5ccee4c986 stage2: more progress towards mutable local variables ...

* implement sema for runtime deref, store pointer, coerce_to_ptr_elem,
   and store
 * identifiers support being lvalues, except for decls is still TODO
 * codegen supports load, store, ref, alloc
 * introduce more MCValue union tags to support pointers
 * add load, ref, store typed IR instructions
 * add Type.isVolatilePtr

2020-07-29 02:29:36 -07:00

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