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path: root/lib/Sema/SemaExpr.cpp
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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
2010-07-05fix a bug I introduced in r107624Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107626 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-05rearrange some logic, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107624 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Fix vector literal/cast confusion - bug 6895.John Thompson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107347 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Fix rdar://8139785 "implement warning on dead expression in comma operator"Argyrios Kyrtzidis
As a bonus, fix the warning for || and && operators; it was emitted even if one of the operands had side effects, e.g: x || test_logical_foo1(); emitted a bogus "expression result unused" for 'x'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29When typo correction produces a result that is not of the kind we'reDouglas Gregor
looking for, reset the name within the LookupResult structure in addition to clearing out the results. Fixes PR7508. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22Vector types are not arithmetic types, either. Note that we now banDouglas Gregor
__real myvec and __imag myvec, since they aren't all that useful (it's just an identity function) but we might want to use them in more restricted cases in the future (e.g., "__real mycomplexvec" could extract the real parts of a vector of complex numbers). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106601 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22Change Type::isFloatingType() to reflect the actual definition of aDouglas Gregor
"floating type" in C, which does not include vector types. Introduce Type::hasFloatingRepresentation() for the places where we want to know whether the underlying representation is one or more floating-point values. Remove some hacks we had where the former behavior of Type::isFloatingType() was at odds with the language definition of the term. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-21Zero out a stale pointerDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106497 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-17Given Decl::isUsed() a flag indicating when to consider the "used"Douglas Gregor
attribute as part of the calculation. Sema::MarkDeclReferenced(), and a few other places, want only to consider the "used" bit to determine, e.g, whether to perform template instantiation. Fixes a linkage issue with Boost.Serialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106252 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-17Do not treat @selector as lvalue (unlike g++).Fariborz Jahanian
Patch by Nico Weber (pr7390). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106242 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Fix a point of semantics with using declaration hiding: method templatesJohn McCall
introduced by using decls are hidden even if their template parameter lists or return types differ from the "overriding" declaration. Propagate using shadow declarations around more effectively when looking up template-ids. Reperform lookup for template-ids in member expressions so that access control is properly set up. Fix some number of latent bugs involving template-ids with totally invalid base types. You can only actually get these with a scope specifier, since otherwise the template-id won't parse as a template-id. Fixes PR7384. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Give Type::isIntegralType() an ASTContext parameter, so that itDouglas Gregor
provides C "integer type" semantics in C and C++ "integral type" semantics in C++. Note that I still need to update isIntegerType (and possibly other predicates) using the same approach I've taken for isIntegralType(). The two should have the same meaning, but currently don't (!). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-16Introduce Type::isIntegralOrEnumerationType(), to cover those placesDouglas Gregor
in C++ that involve both integral and enumeration types. Convert all of the callers to Type::isIntegralType() that are meant to work with both integral and enumeration types over to Type::isIntegralOrEnumerationType(), to prepare to eliminate enumeration types as integral types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106071 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-15Update equality and relationship comparisons of pointers to reflectDouglas Gregor
C++ semantics, eliminating an extension diagnostic that doesn't match C++ semantics (ordered comparison with NULL) and tightening some extwarns to errors in C++ to match GCC and maintain conformance in SFINAE contexts. Fixes <rdar://problem/7941392>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106050 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-15tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-10Another chunk of the new RecursiveASTVisitor implementation: switch the returnChandler Carruth
value semantics such that we recurse while the visitors return true, and halt as soon as one returns false. Patch by csilvers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105787 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09Major redesign of the RecursiveASTVisitor. This implements the majority of theChandler Carruth
new design discussed on cfe-dev, with further steps in that direction to come. It is already much more complete than the previous visitor. Patch by Zhanyong and Craig with 80 column wraps and one missing declaration added by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105709 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-08Warn about comparisons between arrays and improve self-comparisonDouglas Gregor
warnings, from Troy Straszheim! Fixes PR6163. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-08Fixes a typo which prevented proper code gen. forFariborz Jahanian
copy-in of c++ class objects into blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105622 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07When using property-dot assignment syntax to call a setter method,Fariborz Jahanian
type of rhs need be compared to setter's argument and not the getter type. Fixes radar 8062778 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105560 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
2010-06-04Alter the interface of GetTypeForDeclarator to return a TypeSourceInfo*.John McCall
This is never null, but the associated type might be. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105503 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Build AST for copy-construction of copied-inFariborz Jahanian
class object in blocks and carry it to IRGen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105487 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Preserve more information from a block's original function declarator, if oneJohn McCall
was given. Remove some unnecessary accounting from BlockScopeInfo. Handle typedef'ed function types until such time as we decide not. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Restructure how we interpret block-literal declarators. Correctly handleJohn McCall
the case where we pick up block arguments from a typedef. Save the block signature as it was written, and preserve same through PCH. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-04Remove a couple of unnecessary uses of IsStandardConversion.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-02Fix unintentional method call due to false -> pointer conversion; patch by ↵Daniel Dunbar
Dimitry Andric! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105327 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-23In C++, one cannot assign from an arithmetic type to an enumerationDouglas Gregor
type. Fixes PR7051. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104475 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-23Complain about sizeof(overloaded function) rather than crashing.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104470 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-23Provide the overloaded functions for UnresolvedLookupExpr andDouglas Gregor
UnresolvedMemberExpr in their constructors, rather than adding them after the fact. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104468 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Improve our handling of reference binding for subobjects ofDouglas Gregor
temporaries. There are actually several interrelated fixes here: - When converting an object to a base class, it's only an lvalue cast when the original object was an lvalue and we aren't casting pointer-to-derived to pointer-to-base. Previously, we were misclassifying derived-to-base casts of class rvalues as lvalues, causing various oddities (including problems with reference binding not extending the lifetimes of some temporaries). - Teach the code for emitting a reference binding how to look through no-op casts and parentheses directly, since Expr::IgnoreParenNoOpCasts is just plain wrong for this. Also, make sure that we properly look through multiple levels of indirection from the temporary object, but destroy the actual temporary object; this fixes the reference-binding issue mentioned above. - Teach Objective-C message sends to bind the result as a temporary when needed. This is actually John's change, but it triggered the reference-binding problem above, so it's included here. Now John can actually test his return-slot improvements. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104434 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Improve parser recovery when we encounter a dependent template nameDouglas Gregor
that is missing the 'template' keyword, e.g., t->getAs<T>() where getAs is a member of an unknown specialization. C++ requires that we treat "getAs" as a value, but that would fail to parse since T is the name of a type. We would then fail at the '>', since a type cannot be followed by a '>'. This is a very common error for C++ programmers to make, especially since GCC occasionally allows it when it shouldn't (as does Visual C++). So, when we are in this case, we use tentative parsing to see if the tokens starting at "<" can only be parsed as a template argument list. If so, we produce a diagnostic with a fix-it that states that the 'template' keyword is needed: test/SemaTemplate/dependent-template-recover.cpp:5:8: error: 'template' keyword is required to treat 'getAs' as a dependent template name t->getAs<T>(); ^ template This is just a start of this patch; I'd like to apply the same approach to everywhere that a template-id with dependent template name can be parsed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104406 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Introduce a method to get from an anonymous struct or union record declarationJohn McCall
to the associated object declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104309 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Reinstate r104117, Chandler Carruth's change that "[provides] a namingDouglas Gregor
class for UnresolvedLookupExprs, even when occuring on template names" along with a fix for an Objective-C++ crasher it introduced. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Renamed misleading getSourceRange -> getLocalSourceRange and ↵Abramo Bagnara
getFullSourceRange -> getSourceRange for TypeLoc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104220 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Support implicitly closing on 'this' in a block. Fixed PR7165.John McCall
(the codegen works here, too, but that's annoying to test without execution) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104202 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Revert r104117, "Provide a naming class for UnresolvedLookupExprs, even whenDaniel Dunbar
occuring on..." which breaks some Objective-C code. Working on getting a test case... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Provide a naming class for UnresolvedLookupExprs, even when occuring onChandler Carruth
template names. We were completely missing naming classes for many unqualified lookups, but this didn't trigger code paths that need it. This removes part of an optimization that re-uses the template name lookup done by the parser to determine if explicit template arguments actually form a template-id. Unfortunately the technique for avoiding the duplicate lookup lost needed data such as the class context in which the lookup succeeded. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104117 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-19Implement C++ builtin operator candidates for vector types.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104105 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Tweak typo-correction logic a bit regarding "super", so that weDouglas Gregor
consider "super" as a candidate whenever we're parsing an expression within an Objective-C method in an interface that has a superclass. At some point, we'd like to give "super" a little edge over non-local names; that will come later. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Determine when the instantiation of a friend function defined inside aDouglas Gregor
class template conflicts with an existing (non-template) definition. This is another part of PR6952. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103948 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17PR7117: Make sure we don't lose the calling convention for K&R-styleEli Friedman
definitions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103932 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-16fix rdar://7985267 - Don't emit an error about a non-pod argumentChris Lattner
passed to va_start, it doesn't actually pass it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103899 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
2010-05-13Rework 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
2010-05-07When 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
2010-05-07A correct fix for bug 6466.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103250 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07Revert 103247, it causes lots of test failures.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103248 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07Pass the correct type to BuildMemberReferenceExpr. Fixes bug 6466.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103247 91177308-0d34-0410-b5e6-96231b3b80d8
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