This is was a very mechanical patch where I basically first renamed SILNodes.def
and then just kept fixing things until everything compiled, so even though it is
large patch I feel ok(ish) with committing it.
If anyone has any concerns/etc, please email me and I will revert in 1 second.
Swift SVN r7604
Because union layout may interleave tag bits with payload data, we need to be able to efficiently inject and remove tag bits from an address-only union in-place. To do this, we'll model address-only union initialization by projecting out the data address (union_data_addr) and storing to it, then overlaying the tag bits (inject_union_addr). To dispatch and project out the data, we'll use a destructive_switch_union_addr instruction that clears any tag bits in-place necessary to give a valid data address.
Swift SVN r7589
The instruction represents constructing a loadable union given a case and the data for that case, which will let us emit union constructor functions in SIL instead of IRGen (rdar://problem/14773182).
Swift SVN r7558
Create a separate TERMINATOR xmacro in SILNodes.def that only expands for terminators. Use it in TermInst::getSuccessors to automatically delegate to leaf terminator getSuccessors implementations without requiring additional maintenance work when new terminator instructions are added in the future.
Swift SVN r6869
As per code review discussion for r 6763.
The memory behavior enumeration is currently a subset of what it could be. Let’s add more kinds as needed.
Swift SVN r6830
We haven't fully updated references to union cases, and enums still are not
their own thing yet, but "oneof" is gone. Long live "union"!
Swift SVN r6783
Neither order is particularly great yet, but getting them in sync will help us keep SIL.rst coverage up as we add/remove instructions in the future.
Swift SVN r6457
Improve our representations of casts in the AST and SIL so that 'as!' and 'is' (and eventually 'as?') can share almost all of the same type-checking, SILGen, and IRGen code.
In the AST, we now represent 'as!' and 'is' as UnconditionalCheckedCastExpr and IsaExpr, respectively, with the semantic variations of cast (downcast, super-to-archetype, archetype-to-concrete, etc.) discriminated by an enum field. This keeps the user-visible syntactic and type behavior differences of the two forms cleanly separated for AST consumers.
At the SIL level, we transpose the representation so that the different cast semantics get their own instructions and the conditional/unconditional cast behavior is indicated by an enum, making it easy for IRGen to discriminate the different code paths for the different semantics. We also add an 'IsNonnull' instruction to cover the conditional-cast-result-to-boolean conversion common to all the forms of 'is'.
The upshot of all this is that 'x is T' now works for all the new archetype and existential cast forms supported by 'as!'.
Swift SVN r5737
Treat archetypes with a superclass bound as class-bounded. Change SILGen and IRGen to use the new SuperToArchetypeRef and ArchetypeRefToSuper cast instructions, and drop the old SuperToArchetype and ArchetypeToSuper instructions, which are unneeded because any archetype with a superclass will be class-bounded.
Note that this patch doesn't implement representation optimization for archetypes with superclass bounds--they're still always represented with a worst-case UnknownRefCountedPtrTy.
Swift SVN r5629
Add class-bound versions of archetype conversion and existential creation/projection/conversion instructions. Since class-bound generics aren't address-only these instruction variants don't need to indirect through addresses.
Swift SVN r5554
Add an index_raw_pointer instruction that acts like index_addr but for RawPointers, and use it to lower Builtin.gep into SIL instead of into IR.
Swift SVN r5479
Split ExtractInst and ElementAddrInst into separate Tuple and Struct versions, and have the Struct versions reference struct member VarDecls directly instead of integer indices.
Swift SVN r5215
Make IntegerLiteral, FloatLiteral, and StringLiteral own their own copies of their values so they don't depend on the AST. Remove the now-redundant IntegerValueInst, which only existed to be a non-AST-dependent variant of IntegerLiteral.
Swift SVN r5045
We don't want to have to recover from a mangled name whether a function call is to an IRGen-lowered builtin, so add an instruction for referencing builtins.
Swift SVN r4919
Move AbstractCC into SILType and make it an attribute of SILTypes for functions. Add a ConvertCCInst to represent calling convention conversions. Give SILFunctions a linkage attribute. Add logic to SILGen to calculate these attributes for SILConstants based on their attached decls.
IRGen doesn't use these new attributes yet. I'll hook that up when I move mangling over.
Swift SVN r4886
Replace 'constant_ref' with 'function_ref', which references a SILFunction directly, and 'global_addr', which references a global variable VarDecl. Get rid of the SILConstant-to-SILFunction mapping in SILModule and replace it with an ilist of SILFunctions. Allow SILFunctions to be 'external' by not having any blocks in their body.
For now, SILFunctions still carry around their SILConstant "name", because name mangling and IRGen still rely on access to the original decl in order to recover IRGen information, which unfortunately leaves IRGen's CodeRefs in a gross, awkward intermediate state. Lifting mangling, AbstractCC, and other linkage attributes to SIL should clear up this up.
Swift SVN r4865
The value semantics primitives load/move/assign/init/destroy lower trivially to SIL value semantics operators, and the bridge casting operations introduce r/r semantics that should be visible to the ARC optimizer, so move the lowering for these builtins up to SILGen. Add a BUILTIN_SIL_OPERATION metaprogramming macro to Builtins.def, and add a facility similar to IRGen's former SpecializedCallEmission so we can handle builtin call emissions as special cases.
This also sets up the framework for eventually reintroducing special-case handling of known functions like &&, ||, Bool.getLogicValue, Int.convertFromIntegerLiteral, etc. in SILGen.
Swift SVN r4862
Add an IsaInst to represent type tests, and implement SILGen for IsSubtypeExpr AST nodes. Get rid of SuperIsArchetypeExpr because it's not really necessary to have it different from IsaSubtype--the SIL and IR behavior is identical.
Swift SVN r4855
Teach SILGen how to emit the implicit elementwise constructor for structs and the implicit default constructor for classes, and eliminate the now dead IRGen code for them. Add a StructInst SIL instruction to represent constructing a loadable struct value from elements, analogous to TupleInst for tuples.
Swift SVN r4778
take a const ValueBase* instead of a SILValue, implement SILArgument
cases for a few visitors and opt others out explicitly, and assert
that classes in the SIL value hierarchy override their superclass's
classof.
Swift SVN r4705
