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2009-02-18Update Parser::ParseTypeName to return a TypeResult, which also tellsDouglas Gregor
us whether there was an error in trying to parse a type-name (type-id in C++). This allows propagation of errors further in the compiler, suppressing more bogus error messages. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64922 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Allow "overloadable" functions in C to be declared as variadic withoutDouglas Gregor
any named parameters, e.g., this is accepted in C: void f(...) __attribute__((overloadable)); although this would be rejected: void f(...); To do this, moved the checking of the "ellipsis without any named arguments" condition from the parser into Sema (where it belongs anyway). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64902 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18simplify some code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64893 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17gcc spells it "warn_unused_result" (already supported) not "warnunusedresult"Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64849 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Implement basic parsing and semantic analysis for explicitDouglas Gregor
specialization of class templates, e.g., template<typename T> class X; template<> class X<int> { /* blah */ }; Each specialization is a different *Decl node (naturally), and can have different members. We keep track of forward declarations and definitions as for other class/struct/union types. This is only the basic framework: we still have to deal with checking the template headers properly, improving recovery when there are failures, handling nested name specifiers, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64848 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-16diagnose uses of deprecated typenames and tags.Chris Lattner
We now pass all the deprecation tests in the objc.dg suite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64679 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15implement gcc/testsuite/objc.dg/method-attribute-3.m, by improving error ↵Chris Lattner
recovery. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64609 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15don't pass a random english string in as a string argument to Diag.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64608 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Pass the location of the start of the selector to ↵Anders Carlsson
ActOnClassMessage/ActOnInstanceMessage. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64560 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14just ignore hte format_arg attribute for now, it doesn't have any semantic ↵Chris Lattner
implications. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64547 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14add parser and type checking support for attribute((objc_exception)).Chris Lattner
We don't have "zero cost" exceptions for ObjC yet, so there is no codegen support required. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64546 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Several related changes: Chris Lattner
1) implement parser and sema support for reading and verifying attribute(warnunusedresult). 2) rename hasLocalSideEffect to isUnusedResultAWarning, inverting the sense of its result. 3) extend isUnusedResultAWarning to directly return the loc and range info that should be reported to the user. Make it substantially more precise in some cases than what was previously reported. 4) teach isUnusedResultAWarning about CallExpr to decls that are pure/const/warnunusedresult, fixing a fixme. 5) change warn_attribute_wrong_decl_type to not pass in english strings, instead, pass in integers and use %select. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64543 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Don't ignore the const attribute - we even have CG support for that. Do ↵Anders Carlsson
ignore the malloc attribute however. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64538 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14ignore the const attribute for now.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64536 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Sema/AST support for attribute used. Patch by Anders Johnson (with small ↵Daniel Dunbar
tweaks & test case)! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64478 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Add a new Ignored attribute type, and use it for may_alias.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Add sema support for the nodebug attribute.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64441 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Support __attribute__(section(<name>))Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64380 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Initial implementation of function overloading in C.Douglas Gregor
This commit adds a new attribute, "overloadable", that enables C++ function overloading in C. The attribute can only be added to function declarations, e.g., int *f(int) __attribute__((overloadable)); If the "overloadable" attribute exists on a function with a given name, *all* functions with that name (and in that scope) must have the "overloadable" attribute. Sets of overloaded functions with the "overloadable" attribute then follow the normal C++ rules for overloaded functions, e.g., overloads must have different parameter-type-lists from each other. When calling an overloaded function in C, we follow the same overloading rules as C++, with three extensions to the set of standard conversions: - A value of a given struct or union type T can be converted to the type T. This is just the identity conversion. (In C++, this would go through a copy constructor). - A value of pointer type T* can be converted to a value of type U* if T and U are compatible types. This conversion has Conversion rank (it's considered a pointer conversion in C). - A value of type T can be converted to a value of type U if T and U are compatible (and are not both pointer types). This conversion has Conversion rank (it's considered to be a new kind of conversion unique to C, a "compatible" conversion). Known defects (and, therefore, next steps): 1) The standard-conversion handling does not understand conversions involving _Complex or vector extensions, so it is likely to get these wrong. We need to add these conversions. 2) All overloadable functions with the same name will have the same linkage name, which means we'll get a collision in the linker (if not sooner). We'll need to mangle the names of these functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Fix <rdar://problem/6505139> [clang on growl]: need to allow unnamed ↵Steve Naroff
selectors as the first argument git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64320 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-11Fix <rdar://problem/6243503> [sema] @throw; accepted outside catch block.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64318 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Fix a problem with bogus template shadowing warningsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64230 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Implement parsing, semantic analysis and ASTs for default templateDouglas Gregor
arguments. This commit covers checking and merging default template arguments from previous declarations, but it does not cover the actual use of default template arguments when naming class template specializations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64229 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-10Teach the type-id/expression disambiguator about differentDouglas Gregor
disambiguation contexts, so that we properly parse template arguments such as A<int()> as type-ids rather than as expressions. Since this can be confusing (especially when the template parameter is a non-type template parameter), we try to give a friendly error message. Almost, eliminate a redundant error message (that should have been a note) and add some ultra-basic checks for non-type template arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64189 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Rudimentary checking of template arguments against their correspondingDouglas Gregor
template parameters when performing semantic analysis of a template-id naming a class template specialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64185 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Implement Sebastian's idea for simplifying our handling of the greater-than ↵Douglas Gregor
operator/delimiter. Also, clean up after ourselves following a failed parse of a template-argument-list git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64166 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Eliminate TemplateArg so that we only have a single kind ofDouglas Gregor
representation for template arguments. Also simplifies the interface for ActOnClassTemplateSpecialization and eliminates some annoying allocations of TemplateArgs. My attempt at smart pointers for template arguments lists is relatively lame. We can improve it once we're sure that we have the right representation for template arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64154 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Start processing template-ids as types when the template-name refersDouglas Gregor
to a class template. For example, the template-id 'vector<int>' now has a nice, sugary type in the type system. What we can do now: - Parse template-ids like 'vector<int>' (where 'vector' names a class template) and form proper types for them in the type system. - Parse icky template-ids like 'A<5>' and 'A<(5 > 0)>' properly, using (sadly) a bool in the parser to tell it whether '>' should be treated as an operator or not. This is a baby-step, with major problems and limitations: - There are currently two ways that we handle template arguments (whether they are types or expressions). These will be merged, and, most likely, TemplateArg will disappear. - We don't have any notion of the declaration of class template specializations or of template instantiations, so all template-ids are fancy names for 'int' :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64153 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Implement Declarator::getSourceRange().Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64151 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Make Sema::getTypeName return the opaque pointer of a QualType ratherDouglas Gregor
than a Decl, which gives us some more flexibility to express the results with the type system. There are no clients using this flexibility yet, but it's meant to be able to describe qualified names as written in the source (e.g., "foo::type") or template-ids that name a class template specialization (e.g., "std::vector<INT>"). DeclSpec's TST_typedef has become TST_typename, to reflect its use to describe types found by name (that may or may not be typedefs). The type representation of a DeclSpec with TST_typename is an opaque QualType pointer. All users of TST_typedef, both direct and indirect, have been updated for these changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64141 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-07Implement dereferencing of pointers-to-member.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63983 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-06Semantic checking for class template declarations andDouglas Gregor
redeclarations. For example, checks that a class template redeclaration has the same template parameters as previous declarations. Detangled class-template checking from ActOnTag, whose logic was getting rather convoluted because it tried to handle C, C++, and C++ template semantics in one shot. Made some inroads toward eliminating extraneous "declaration does not declare anything" errors by adding an "error" type specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63973 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05Put the invalid flag of OwningResult into the Action pointer.Sebastian Redl
This shrinks OwningResult by one pointer. Since it is no longer larger than OwningPtr, merge the two. This leads to simpler client code and speeds up my benchmark by 2.7%. For some reason, this exposes a previously hidden bug, causing a regression in SemaCXX/condition.cpp. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63867 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Add support for blocks with explicit return types.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63784 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Basic representation of C++ class templates, from Andrew Sutton.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63750 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04Diagnose ambiguities in getTypeName. Fixes ↵Douglas Gregor
http://llvm.org/bugs/show_bug.cgi?id=3475 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-03Allow taking the address of data members, resulting in a member pointer.Sebastian Redl
Pointers to functions don't work yet, and pointers to overloaded functions even less. Also, far too much illegal code is accepted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63655 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-02Formatting fix.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63573 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-31Add sema support for the cleanup attribute.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63462 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30Implement and test aggregate initialization in C++. Major changes:Douglas Gregor
- Support initialization of reference members; complain if any reference members are left uninitialized. - Use C++ copy-initialization for initializing each element (falls back to constraint checking in C) - Make sure we diagnose when one tries to provide an initializer list for a non-aggregate. - Don't complain about empty initializers in C++ (they are permitted) - Unrelated but necessary: don't bother trying to convert the decl-specifier-seq to a type when we're dealing with a C++ constructor, destructor, or conversion operator; it results in spurious warnings. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63431 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30Simplify/cleanup r63219 (based on Chris review).Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63393 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-29move library-specific diagnostic headers into library private dirs. ReduceChris Lattner
redundant #includes. Patch by Anders Johnsen! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63271 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28Name change (isTypeName->getTypeName).Steve Naroff
Since it doesn't return a bool, is shouldn't be prefixed with 'is'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63226 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28Change Parser::ParseFunctionDeclarator() to annotate typename tokens.Steve Naroff
This removes ~10% of the calls to Sema::isTypeName(), which amount to a little less than a 1% reduction in usertime (for Cocoa.h). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63219 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-27Split the single monolithic DiagnosticKinds.def file into oneChris Lattner
.def file for each library. This means that adding a diagnostic to sema doesn't require all the other libraries to be rebuilt. Patch by Anders Johnsen! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63111 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-27Fix for PR3418: make sure to handle the RHS of expressions starting with Eli Friedman
__extension__. This sort of construct shows up in the gcc source code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63100 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-26Some micro-optimizations for DISABLE_SMART_POINTERS:Douglas Gregor
- When it's safe, ActionResult uses the low bit of the pointer for the "invalid" flag rather than a separate "bool" value. This keeps GCC from generating some truly awful code, for a > 3x speedup in the result-passing microbenchmark. - When DISABLE_SMART_POINTERS is defined, store an ActionResult within ASTOwningResult rather than an ASTOwningPtr. Brings the performance benefits of the above to smart pointers with DISABLE_SMART_POINTERS defined. Sadly, these micro-benchmark performance improvements don't seem to make much of a difference on Cocoa.h right now. However, they're harmless and might help with future optimizations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63061 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-24Make tentative parsing of pointer-to-member decls work, and fix other stuff ↵Sebastian Redl
pointed out by Doug. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62944 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-24Add support for declaring pointers to members.Sebastian Redl
Add serialization support for ReferenceType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62934 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-23Handle any undeclared parameters in a K&R-style function with aDouglas Gregor
special action, inside function prototype scope. This avoids confusion when we try to inject these parameters into the scope of the function body before the function itself has been added to the surrounding scope. Fixes <rdar://problem/6097326>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62849 91177308-0d34-0410-b5e6-96231b3b80d8
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