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2010-07-08When performing substitution of template arguments within the body ofDouglas Gregor
a template, be sure to include the template arguments from the injected-class-name. Fixes PR7587. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107895 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Introduce Decl::hasBody() and FunctionDecl::hasBody() and use them instead ↵Argyrios Kyrtzidis
of getBody() when we are just checking the existence of a body, to avoid de-serialization of the body from PCH. Makes de-serialization of the function body even more "lazier". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107768 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06Fix multiple emission of the this-> fixit for each instantiation by fixing theNick Lewycky
AST during the instantiation. Fixes PR7417! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02Move the "current scope" state from the Parser into Action. ThisDouglas Gregor
allows Sema some limited access to the current scope, which we only use in one way: when Sema is performing some kind of declaration that is not directly driven by the parser (e.g., due to template instantiatio or lazy declaration of a member), we can find the Scope associated with a DeclContext, if that DeclContext is still in the process of being parsed. Use this to make the implicit declaration of special member functions in a C++ class more "scope-less", rather than using the NULL Scope hack. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107491 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Revert r106099; it broke self-host.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106100 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Added TemplateTypeParmType::getDecl().Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106099 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-24Make sure that we instantiate variably modified types, even if theyDouglas Gregor
aren't dependent. Fixes <rdar://problem/8020206>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104511 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Revert r104106; it's breaking linking of Boost.Serialization.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104121 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Teach clang to instantiate attributes on more declarations. Fixes PR7102.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104106 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-13Rework when and how vtables are emitted, by tracking where vtables areDouglas Gregor
"used" (e.g., we will refer to the vtable in the generated code) and when they are defined (i.e., because we've seen the key function definition). Previously, we were effectively tracking "potential definitions" rather than uses, so we were a bit too eager about emitting vtables for classes without key functions. The new scheme: - For every use of a vtable, Sema calls MarkVTableUsed() to indicate the use. For example, this occurs when calling a virtual member function of the class, defining a constructor of that class type, dynamic_cast'ing from that type to a derived class, casting to/through a virtual base class, etc. - For every definition of a vtable, Sema calls MarkVTableUsed() to indicate the definition. This happens at the end of the translation unit for classes whose key function has been defined (so we can delay computation of the key function; see PR6564), and will also occur with explicit template instantiation definitions. - For every vtable defined/used, we mark all of the virtual member functions of that vtable as defined/used, unless we know that the key function is in another translation unit. This instantiates virtual member functions when needed. - At the end of the translation unit, Sema tells CodeGen (via the ASTConsumer) which vtables must be defined (CodeGen will define them) and which may be used (for which CodeGen will define the vtables lazily). From a language perspective, both the old and the new schemes are permissible: we're allowed to instantiate virtual member functions whenever we want per the standard. However, all other C++ compilers were more lazy than we were, and our eagerness was both a performance issue (we instantiated too much) and a portability problem (we broke Boost test cases, which now pass). Notes: (1) There's a ton of churn in the tests, because the order in which vtables get emitted to IR has changed. I've tried to isolate some of the larger tests from these issues. (2) Some diagnostics related to implicitly-instantiated/implicitly-defined virtual member functions have moved to the point of first use/definition. It's better this way. (3) I could use a review of the places where we MarkVTableUsed, to see if I missed any place where the language effectively requires a vtable. Fixes PR7114 and PR6564. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-12Whenever we instantiate a function definition or class, enter a newDouglas Gregor
potentially-evaluated expression context, to ensure that used declarations get properly marked. Fixes PR7123. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103624 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Merged Elaborated and QualifiedName types.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103517 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07When we encounter a non-dependent type during template instantiation,Douglas Gregor
mark any declarations we see inside of that type as "referenced". Fixes PR7079. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103323 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Partial and full specializations of a class template may have aDouglas Gregor
different tag kind ("struct" vs. "class") than the primary template, which has an affect on access control. Should fix the last remaining Boost.Accumulors failure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03When computing the template arguments for the instantiation of aDouglas Gregor
friend function template, be sure to adjust the computed template argument lists based on the location of the definition of the function template: it's possible that the definition we're instantiating with and the template declaration that we found when creating the specialization are in different contexts, which meant that we would end up using the wrong template arguments for instantiation. Fixes PR7013; all Boost.DynamicBitset tests now pass. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102974 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Clean up our handling of local instantiation scopes, which keep trackDouglas Gregor
of the mapping from local declarations to their instantiated counterparts during template instantiation. Previously, we tried to do some unholy merging of local instantiation scopes that involved storing a single hash table along with an "undo" list on the side... which was ugly, and never handled function parameters properly. Now, we just keep separate hash tables for each local instantiation scope, and "combining" two scopes means that we'll look in each of the combined hash tables. The combined scope stack is rarely deep, and this makes it easy to avoid the "undo" issues we were hitting. Also, I've simplified the logic for function parameters: if we're declaring a function and we need the function parameters to live longer, we just push them back into the local instantiation scope where we need them. Fixes PR6990. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102732 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Introduce a sequence number into class template partialDouglas Gregor
specializations, which keeps track of the order in which they were originally declared. We use this number so that we can always walk the list of partial specializations in a predictable order during matching or template instantiation. This also fixes a failure in Boost.Proto, where SourceManager::isBeforeInTranslationUnit was behaving poorly in inconsistent ways. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102693 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-29Properly switch into the declaring scope of a template when performingJohn McCall
template argument deduction or (more importantly) the final substitution required by such deduction. Makes access control magically work in these cases. Fixes PR6967. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102572 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Implement template instantiation for Objective-C @catchDouglas Gregor
statements. This is the last of the Objective-C statements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102356 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20Introduce a limit on the depth of the template instantiation backtraceDouglas Gregor
we will print with each error that occurs during template instantiation. When the backtrace is longer than that, we will print N/2 of the innermost backtrace entries and N/2 of the outermost backtrace entries, then skip the middle entries with a note such as: note: suppressed 2 template instantiation contexts; use -ftemplate-backtrace-limit=N to change the number of template instantiation entries shown This should eliminate some excessively long backtraces that aren't providing any value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101882 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19Keep track of the actual storage specifier written on a variable orDouglas Gregor
function declaration, since it may end up being changed (e.g., "extern" can become "static" if a prior declaration was static). Patch by Enea Zaffanella and Paolo Bolzoni. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101826 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-18Make sure that we don't visit redeclarations of nested classes whileDouglas Gregor
instantiating class members as part of an explicit instantiation. Addresses a compilation problem in Boost.Serialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12When creating the implicitly-declared special member functions, beDouglas Gregor
sure to introduce them into the current Scope (when we have one) in addition to the DeclContext for the class, so that they can be found by name lookup for inline members of the class. Fixes PR6570. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12Be sure to instantiate the parameters of a function, even when theDouglas Gregor
function's type is (strictly speaking) non-dependent. This ensures that, e.g., default function arguments get instantiated properly. And, since I couldn't resist, collapse the two implementations of function-parameter instantiation into calls to a single, new function (Sema::SubstParmVarDecl), since the two had nearly identical code (and each had bugs the other didn't!). More importantly, factored out the semantic analysis of a parameter declaration into Sema::CheckParameter, which is called both by Sema::ActOnParamDeclarator (when parameters are parsed) and when a parameter is instantiated. Previously, we were missing some Objective-C and address-space checks on instantiated function parameters. Fixes PR6733. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Only complain about explicit instantiations following explicitDouglas Gregor
specializations when the explicit instantiation was... explicitly written, i.e., not the product of an explicit instantiation of an enclosing class. Fixes this spurious warning when Clang builds LLVM: /Volumes/Data/dgregor/Projects/llvm/lib/CodeGen/MachineDominators.cpp:22:1: warning: explicit instantiation of 'addRoot' that occurs after an explicit specialization will be ignored (C++0x extension) [-pedantic] git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100900 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Instantiate default argument expressions even if their associated parameterJohn McCall
type isn't dependent. Fixes rdar://problem/7838962. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100871 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Reinstate my CodeModificationHint -> FixItHint renaming patch, withoutDouglas Gregor
the C-only "optimization". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Revert r100008, which inexplicably breaks the clang-i686-darwin10 builderDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100018 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Rename CodeModificationHint to FixItHint, since we've been using theDouglas Gregor
term "fix-it" everywhere and even *I* get tired of long names sometimes. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100008 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Improve diagnostics when printing a template instantiation backtraceDouglas Gregor
involving substitution of deduced template arguments into a class template partial specialization or function template, or when substituting explicitly-specific template arguments into a function template. We now print the actual deduced argument bindings so the user can see what got deduced. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99923 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-28After performing template argument deduction for a function template,Douglas Gregor
check deduced non-type template arguments and template template arguments against the template parameters for which they were deduced, performing conversions as appropriate so that deduced template arguments get the same treatment as explicitly-specified template arguments. This is the bulk of PR6723. Also keep track of whether deduction of a non-type template argument came from an array bound (vs. anywhere else). With this information, we enforce C++ [temp.deduct.type]p17, which requires exact type matches when deduction deduces a non-type template argument from something that is not an array bound. Finally, when in a SFINAE context, translate the "zero sized arrays are an extension" extension diagnostic into a hard error (for better standard conformance), which was a minor part of PR6723. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99734 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25Improve our handling of local instantiation scopes in two related ways:Douglas Gregor
- When substituting template arguments as part of template argument deduction, introduce a new local instantiation scope. - When substituting into a function prototype type, introduce a new "temporary" local instantiation scope that merges with its outer scope but also keeps track of any additions it makes, removing them when we exit that scope. Fixes PR6700, where we were getting too much mixing of local instantiation scopes due to template argument deduction that substituted results into function types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Each non-local class instantiation is its own local instantiationDouglas Gregor
scope. Fixes PR6619. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12Preserve the inherited-default-argument bit through instantiation.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98375 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Maintain type source information for functions through templateJohn McCall
instantiation. Based on a patch by Enea Zaffanella! I found a way to reduce some of the redundancy between TreeTransform's "standard" FunctionProtoType transformation and TemplateInstantiator's override, and I killed off the old SubstFunctionType by adding type source info for the last cases where we were creating FunctionDecls without TSI (at least that get passed through template instantiation). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98252 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Finish pushing source-location information though TreeTransform'sDouglas Gregor
TransformDefinition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01When looking for the instantiated declaration that corresponds to aDouglas Gregor
given declaration in a template, make sure that the context we're searching through is complete. Fixes PR6376. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97444 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Restore the invariant that a nested-name-specifier can only containDouglas Gregor
class types, dependent types, and namespaces. I had previously weakened this invariant while working on parsing pseudo-destructor expressions, but recent work in that area has made these changes unnecessary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97112 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Implement support for parsing pseudo-destructor expression with a ↵Douglas Gregor
nested-name-specifier, e.g., typedef int Int; int *p; p->Int::~Int(); This weakens the invariant that the only types in nested-name-specifiers are tag types (restricted to class types in C++98/03). However, we weaken this invariant as little as possible, accepting arbitrary types in nested-name-specifiers only when we're in a member access expression that looks like a pseudo-destructor expression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Improve parsing and instantiation of destructor names, so that we canDouglas Gregor
now cope with the destruction of types named as dependent templates, e.g., y->template Y<T>::~Y() Nominally, we implement C++0x [basic.lookup.qual]p6. However, we don't follow the letter of the standard here because that would fail to parse template<typename T, typename U> X0<T, U>::~X0() { } properly. The problem is captured in core issue 339, which gives some (but not enough!) guidance. I expect to revisit this code when the resolution of 339 is clear, and/or we start capturing better source information for DeclarationNames. Fixes PR6152. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96367 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Fix instantiation of template functions with local classes that contain virtualChandler Carruth
methods. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96283 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11More vtable layout dumper improvements. Handle destructors, dump the ↵Anders Carlsson
complete function type of the member functions (using PredefinedExpr::ComputeName. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95887 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Eliminate the ASTContext parameter from RecordDecl::getDefinition()Douglas Gregor
and CXXRecordDecl::getDefinition(); it's totally unnecessary. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08When substituting a declaration non-type template argument for aDouglas Gregor
non-type template parameter that has reference type, augment the qualifiers of the non-type template argument with those of the referenced type. Fixes PR6250. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08Thread a source location into the template-argument deduction routines. ThereJohn McCall
may be some other places that could take advantage of this new information, but I haven't really looked yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Use a substituted type when determining how to substitute in non-type templateJohn McCall
params. Don't insert addrof operations when matching against a pointer; array/function conversions should take care of this for us, assuming the argument type-checked in the first place. Add a fixme where we seem to be using a less-restrictive reference type than we should. Fixes PR 6249. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95495 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Extract a function to instantiate references to value template parameters.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95491 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Fix a bogus assertion after adjusting the type of a substitutedDouglas Gregor
non-type template argument for a non-type template parameter of pointer type. Fixes PR6244. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95447 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Fix two issues with the substitution of template template parametersDouglas Gregor
when instantiating the declaration of a member template: - Only check if the have a template template argument at a specific position when we already know that we have template arguments at that level; otherwise, we're substituting for a level-reduced template template parameter. - When trying to find an instantiated declaration for a template template parameter, look into the instantiated scope. This was a typo, where we had two checks for TemplateTypeParmDecl, one of which should have been a TemplateTemplateParmDecl. With these changes, tramp3d-v4 passes -fsyntax-only. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95421 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Default function arguments for function template specializationsDouglas Gregor
always come from the primary template, so gather the instantiation template arguments from the primary template. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95380 91177308-0d34-0410-b5e6-96231b3b80d8
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