Start using null-page values as extra inhabitants when laying out single-payload enums that contain class pointers as their payload type. Don't use inhabitants that set the lowest bit, to avoid trampling potential ObjC tagged pointer representations. This means that 'T?' for class type T now has a null pointer representation. Enums with multiple empty cases, as well as nested enums like 'T??', should now have optimal representations for class type T as well.
Note that we don't yet expose extra inhabitants for aggregates that contain heap object references, such as structs with class fields, Swift function types, or class-bounded existentials (even when the existential has no witness tables).
Swift SVN r10061
We were failing to capture generic parameters from closure contexts that themselves capture generic parameters from context. This fixes <rdar://problem/15417783>. While we're here, eliminate some unnecessary splitting of 'ClosureExpr' and 'AutoClosureExpr' in the SILDeclRef::Loc PointerUnion; we can just use their base class AbstractClosureExpr in the PointerUnion.
Swift SVN r10031
A problem with name lookup from Clang module contexts <rdar://problem/15410928> means I have to disable a ~= overload in the ObjectiveC overlay. Other than that, NS_ENUM import should be ready to go.
Swift SVN r10018
Also remove the SourceLoc parameter from addNewSourceBuffer(). In llvm::SourceMgr
it is used to indicate textual inclusion, which we don't have in swift.
Swift SVN r10014
We still want to allow line wrapping, so only issue the warning when the indentation of the expression and the return keyword is the same.
radar://11945406
Swift SVN r9984
If given a SourceFile, only decls within that SourceFile will be serialized.
Decls within other SourceFiles are emitted using cross-references that refer
to the current module.
Known issues:
- External definitions won't be serialized by any source file. They probably
have to be serialized into /all/ of them.
- Nothing can actually /read/ a serialized partial-module yet. We need a
notion of a TranslationUnit that can contain both source and serialized
files, and we probably need loading to be more lazy.
Swift SVN r9978
rdar://14151649 suggests that it should be a warning, but I don’t see a reason
why it should not be an error. We have no legacy code that relies on this.
Swift SVN r9976
Previously, the Parser and BranchStmt typedef-ed ExprStmtOrDecl as a pointer union. Using typedef made the objects compatible, but did not allow us to extend the type with helper methods, such as getSourceRange(), which is something you can get on all of the AST objects. This patch introduces ASTNode that subclasses from PointerUnion and is used by both parser and BranchStmt.
Swift SVN r9971
In cases like the one below, replace the integer_literal instructions
with the condition branching to the block that the instruction is in.
cond_br %10, bb1, bb3
bb1:
%13 = integer_literal $Builtin.Int1, -1
br bb2(%13 : $Builtin.Int1)
bb3:
%18 = integer_literal $Builtin.Int1, 0
br bb2(%18 : $Builtin.Int1)
Similarly, for
switch_enum %0 : $Bool, case #Bool.true!enumelt: bb1
bb1:
%1 = enum $Bool, #Bool.true!enumelt
we'll replace the enum with %0.
Use this functionality from within the CFG simplification pass to
simplify basic block args in an attempt to expose opportunities for
further CFG simplification.
Swift SVN r9968
Optional protocol methods are almost trivially implementable for
Objective-C protocols, so start with this over-zealous restriction. We
intend to lift this restriction later.
Swift SVN r9961
When we see an enum declaration in the Clang importer, look at its source location to see if it was produced as part of an NS_ENUM macro expansion. If so, take the 'Enum' route through the Clang importer and import it as a Swift enum. This will break things until we have end-to-end support for Clang-imported enums, so hide it behind an -import-ns-enum switch for now.
Swift SVN r9951
This little "find the context where the generic parameters could be"
idiom was copy-pasted in a few places, which is ugly. And if we get
generic subscripts (or some other generic value decl), we'll be sorry.
Swift SVN r9927
all the tuple stuff is out of the way. This kicks in 600 times in the
stdlib and ends up shrinking the stdlib by 2500 lines (down to 53209).
Swift SVN r9903
