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2010-10-12Introduce support for emitting diagnostics (warnings + their notes)Douglas Gregor
that are suppressed during template argument deduction. This change queues diagnostics computed during template argument deduction. Then, if the resulting function template specialization or partial specialization is chosen by overload resolution or partial ordering (respectively), we will emit the queued diagnostics at that point. This addresses most of PR6784. However, the check for unnamed/local template arguments (which existed before this change) is still only skin-deep, and needs to be extended to look deeper into types. It must be improved to finish PR6784. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116373 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-10Allow a string literal to initialize a tail array (PR8217), patch Chris Lattner
by Pierre Habouzit! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08This patch fixes multiple issues in clang's designated init builder andDouglas Gregor
completes support for C1X anonymous struct/union init features: * Indexed anonymous member initializers should not be expanded. Doing so makes little sense and would cause unresolvable semantic ambiguity in valid code (regression introduced by r69153). * Subobject initialization of (possibly nested) anonymous members are now referred to with paths relative to the naming record context, eliminating the synthesis of incorrect implicit InitListExprs that caused CodeGen to assert. * Field lookup was missing a null check in IdentifierInfo comparison which caused lookup for a known (already resolved) field to match the first unnamed data member it encountered leading to silent miscompilation. * Subobject paths are no longer built using the general purpose Sema::BuildAnonymousStructUnionMemberPath(). If any corner cases crop up, we will now assert earlier in Sema instead of passing invalid InitListExprs through to CodeGen. Fixes PR6955, from Alp Toker! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116098 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05In Sema's TryRefInitWithConversionFunction, suppress user conversions for ↵Argyrios Kyrtzidis
the overload candidates. Fixes an infinite recursion in overload resolution for rdar://8499524. Many thanks to Doug! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115588 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15one piece of code is responsible for the lifetime of every aggregateJohn McCall
slot. The easiest way to do that was to bundle up the information we care about for aggregate slots into a new structure which demands that its creators at least consider the question. I could probably be convinced that the ObjC 'needs GC' bit should be rolled into this structure. Implement generalized copy elision. The main obstacle here is that IR-generation must be much more careful about making sure that exactly git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-12When performing overload resolution, only compare the final conversionDouglas Gregor
sequences for two conversion functions when in fact we are in the text of initialization by a user-defined conversion sequences. Fixes PR8034. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113724 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Use the new-initialization code for initializing scalars with aDouglas Gregor
function-style cast. Previously, we had a (redundant, incorrect) semantic-checking path for non-class types, which allowed value-initialization of a reference type and then crashed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113415 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Provide proper type-source location information forDouglas Gregor
CXXTemporaryObjectExpr, CXXScalarValueInitExpr, and CXXUnresolvedConstructExpr, getting rid of a bunch of FIXMEs in the process. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113319 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Rename DeclContext::getLookupContext to getRedeclContext and change its ↵Sebastian Redl
semantics slightly. No functionality change in the absence of inline namespaces. Also, change a few places where inline namespaces actually make a difference to be prepared for them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26One who seeks knowledge learns something new every day.John McCall
One who seeks the Tao unlearns something new every day. Less and less remains until you arrive at non-action. When you arrive at non-action, nothing will be left undone. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112244 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-26Work around a gcc warning.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112192 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25Split out a header to hold APIs meant for the Sema implementation from Sema.h.John McCall
Clients of Sema don't need to know (for example) the list of diagnostics we support. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25GCC didn't care for my attempt at API compatibility, so brute-force everythingJohn McCall
to the new constants. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25More incremental progress towards not including Expr.h in Sema.h.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112044 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24Move some of SemaOverload's API to various places in Overload.h, and killJohn McCall
some of it off completely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111957 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24Remove a header dependency from Sema.h at the cost of some type safety.John McCall
If someone wants to fix this some other way.... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111905 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24Struggle mightily against header inclusion in Sema.h.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111904 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24OwningExprResult -> ExprResult. This patch brought to you byJohn McCall
M-x query-replace-regexp \(Sema::\|Action::\|Parser::\|\)Owning\(Expr\|Stmt\)Result -> \2Result git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111903 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23Relax the construction of a definition for implicit, trivial defaultChandler Carruth
constructors. We perform semantic checking when creating the definition, and this isn't needed in certain contexts (value initialization) but is in others (default initialization). This fixes PR7948. We add explicit code to the default initialization path to ensure the definition is both present and valid. Doug, please review. I think this follows your latest suggestion, and it ended up remarkably cleaner than I anticipated. Also let me know if similar logic should be followed for destructors and copy-constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23Sundry incremental steps towards killing off Action.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111795 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-20Another step in the process of making the parser depend on Sema:John McCall
- move DeclSpec &c into the Sema library - move ParseAST into the Parse library Reflect this change in a thousand different includes. Reflect this change in the link orders. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111667 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-17Don't try to initialize a reference with a constructed temporary if eitherJohn McCall
of the classes is invalid. A class is invalid if a base is invalid. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111227 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-14PR3344: Downgrade "too many braces around scalar initializer" to a warning.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111067 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Move Sema's headers into include/clang/Sema, renaming a few along the way.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Allow reference binding of a reference of Objective-C object type toDouglas Gregor
an lvalue of another, compatible Objective-C object type (e.g., a subclass). Introduce a new initialization sequence step kind to describe this binding, along with a new cast kind. Fixes PR7741. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-07Store inheritance paths after CastExprs instead of inside them.John McCall
This takes some trickery since CastExpr has subclasses (and indeed, is abstract). Also, smoosh the CastKind into the bitfield from Expr. Drops two words of storage from Expr in the common case of expressions which don't need inheritance paths. Avoids a separate allocation and another word of overhead in cases needing inheritance paths. Also has the advantage of not leaking memory, since destructors for AST nodes are never run. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Make sure that implicit qualification and derived-to-base conversions of ↵Sebastian Redl
xvalues preserve xvalue-ness. Unfortunately I have no idea how to test this property; there doesn't seem to be a syntactical construct that triggers such a conversion and still allows the distinction between prvalues and xvalues to be made. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109406 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Added extra check when looking for location of '=' inFariborz Jahanian
a copy initialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109025 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Fix source location of the initializer in Fariborz Jahanian
a copy initialization. Back out hack in objc rewriter. fixes radar 8213998. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109024 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Update ImplicitCastExpr to be able to represent an XValue.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108807 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13Whenever we're creating an expression that is typically an rvalueDouglas Gregor
(e.g., a call, cast, etc.), immediately adjust the expression's type to strip cv-qualifiers off of all non-class types (in C++) or all types (in C). This effectively extends my previous fix for PR7463, which was restricted to calls, to other kinds of expressions within similar characteristics. I've audited every use of getNonReferenceType() in the code base, switching to the newly-renamed getNonLValueExprType() where necessary. Big thanks to Eli for pointing out just how incomplete my original fix for PR7463 actually was. We've been handling cv-qualifiers on rvalues wrong for a very, very long time. Fixes PR7463. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108253 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13When forming a function call or message send expression, be sure toDouglas Gregor
strip cv-qualifiers from the expression's type when the language calls for it: in C, that's all the time, while C++ only does it for non-class types. Centralized the computation of the call expression type in QualType::getCallResultType() and some helper functions in other nodes (FunctionDecl, ObjCMethodDecl, FunctionType), and updated all relevant callers of getResultType() to getCallResultType(). Fixes PR7598 and PR7463, along with a bunch of getResultType() call sites that weren't stripping references off the result type (nothing stripped cv-qualifiers properly before this change). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108234 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Reinstate the fix for PR7556. A silly use of isTrivial() wasDouglas Gregor
suppressing copies of objects with trivial copy constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107857 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Revert r107828 and r107827, the fix for PR7556, which seems to beDouglas Gregor
breaking bootstrap on Linux. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Rename CXXZeroInitValueExpr to CXXScalarValueInitExpr, to reflect itsDouglas Gregor
newly-narrowed scope. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107828 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Do not use CXXZeroValueInitExpr for class types. Instead, useDouglas Gregor
CXXConstructExpr/CXXTemporaryObjectExpr/CXXNewExpr as appropriate. Fixes PR7556, and provides a slide codegen improvement when copy-initializing a POD class type from a value-initialized temporary. Previously, we weren't eliding the copy. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Fix an issue with opencl init list checking.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107824 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02Introduce a new routine, LookupConstructors(), and use it for allDouglas Gregor
constructor-name lookup. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107536 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01Add a new routine Sema::LookupDestructor and make all destructor-lookup ↵Douglas Gregor
calls use that routine git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107444 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01Remove unnecessary ASTContext parameter fromDouglas Gregor
CXXRecordDecl::getDestructor(); no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107394 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01When performing copy initialization via user-defined conversions,Douglas Gregor
don't allow two user-defined conversions. Fixes PR6595 (again). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107379 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Make both old and new versions of reference binding use the new ↵Sebastian Redl
classification functions, and updated them for N3092. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107301 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Fix a comment typo.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107290 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-18Don't complain about missing field initializers when the initializerDouglas Gregor
list is completely empty, from Lasse Kärkkäinen! Fixes PR7413. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106320 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Use MaybeCreateCXXExprWithTemporaries for potential destruction ofFariborz Jahanian
created temporary. Use own initialized entity for copied in block variables. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105533 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07PR7245: Make binding a reference to a temporary without a usable copyJeffrey Yasskin
constructor into an extension warning into the error that C++98 requires. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04More refactoring.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Add a new failure kind, FK_Incomplete, to InitializationSequence, toDouglas Gregor
capture failures when we try to initialize an incomplete type. Previously, we would (ab)use FK_ConversionFailed, then occasionally dereference a null pointer when trying to diagnose the failure. Fixes <rdar://problem/7959007>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104286 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Substantially alter the design of the Objective C type AST by introducingJohn McCall
ObjCObjectType, which is basically just a pair of one of {primitive-id, primitive-Class, user-defined @class} with a list of protocols. An ObjCObjectPointerType is therefore just a pointer which always points to one of these types (possibly sugared). ObjCInterfaceType is now just a kind of ObjCObjectType which happens to not carry any protocols. Alter a rather large number of use sites to use ObjCObjectType instead of ObjCInterfaceType. Store an ObjCInterfaceType as a pointer on the decl rather than hashing them in a FoldingSet. Remove some number of methods that are no longer used, at least after this patch. By simplifying ObjCObjectPointerType, we are now able to easily remove and apply pointers to Objective-C types, which is crucial for a certain kind of ObjC++ metaprogramming common in WebKit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103870 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Recognize when the named return value optimization applies in aDouglas Gregor
"return" statement and mark the corresponding CXXConstructExpr as elidable. Teach CodeGen that eliding a temporary is different from eliding an object construction. This is just a baby step toward NRVO. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103849 91177308-0d34-0410-b5e6-96231b3b80d8
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