aboutsummaryrefslogtreecommitdiff
path: root/lib/AST/ExprClassification.cpp
AgeCommit message (Collapse)Author
2012-04-19Implements boxed expressions for Objective-C. <rdar://problem/10194391>Patrick Beard
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155082 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Alternate fix to PR12248: put Sema in charge of special-casingJohn McCall
the diagnostic for assigning to a copied block capture. This has the pleasant side-effect of letting us special-case the diagnostic for assigning to a copied lambda capture as well, without introducing a new non-modifiable enumerator for it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152593 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-12Make sure we treat variables captured by reference in lambda as modifiable ↵Eli Friedman
lvalues. Regression from r152491. Fixes PR12248. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152573 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11Unify naming of LangOptions variable/get function across the Clang stack ↵David Blaikie
(Lex to AST). The member variable is always "LangOpts" and the member function is always "getLangOpts". Reviewed by Chris Lattner git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Remove BlockDeclRefExpr and introduce a bit on DeclRefExpr toJohn McCall
track whether the referenced declaration comes from an enclosing local context. I'm amenable to suggestions about the exact meaning of this bit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152491 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-07AST representation for user-defined literals, plus just enough of semanticRichard Smith
analysis to make the AST representation testable. They are represented by a new UserDefinedLiteral AST node, which is a sugared CallExpr. All semantic properties, including full CodeGen support, are achieved for free by this representation. UserDefinedLiterals can never be dependent, so no custom instantiation behavior is required. They are mangled as if they were direct calls to the underlying literal operator. This matches g++'s apparent behavior (but not its actual mangling, which is broken for literal-operator-ids). User-defined *string* literals are now fully-operational, but the semantic analysis is quite hacky and needs more work. No other forms of user-defined literal are created yet, but the AST support for them is present. This patch committed after midnight because we had already hit the quota for new kinds of literal yesterday. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152211 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-06Add clang support for new Objective-C literal syntax for NSDictionary, NSArray,Ted Kremenek
NSNumber, and boolean literals. This includes both Sema and Codegen support. Included is also support for new Objective-C container subscripting. My apologies for the large patch. It was very difficult to break apart. The patch introduces changes to the driver as well to cause clang to link in additional runtime support when needed to support the new language features. Docs are forthcoming to document the implementation and behavior of these features. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152137 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24Implement a new type trait __is_trivially_constructible(T, Args...)Douglas Gregor
that provides the behavior of the C++11 library trait std::is_trivially_constructible<T, Args...>, which can't be implemented purely as a library. Since __is_trivially_constructible can have zero or more arguments, I needed to add Yet Another Type Trait Expression Class, this one handling arbitrary arguments. The next step will be to migrate UnaryTypeTrait and BinaryTypeTrait over to this new, more general TypeTrait class. Fixes the Clang side of <rdar://problem/10895483> / PR12038. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151352 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-07Introduce basic ASTs for lambda expressions. This covers:Douglas Gregor
- Capturing variables by-reference and by-copy within a lambda - The representation of lambda captures - The creation of the non-static data members in the lambda class that store the captured variables - The initialization of the non-static data members from the captured variables - Pretty-printing lambda expressions There are a number of FIXMEs, both explicit and implied, including: - Creating a field for a capture of 'this' - Improved diagnostics for initialization failures when capturing variables by copy - Dealing with temporaries created during said initialization - Template instantiation - AST (de-)serialization - Binding and returning the lambda expression; turning it into a proper temporary - Lots and lots of semantic constraints - Parameter pack captures git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149977 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20More dead code removal (using -Wunreachable-code)David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148577 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-23Mass rename C1x references to C11. The name hasn't proliferated like "C++0x" ↵Benjamin Kramer
so this patch is surprisingly small. Also drop -Wc1x-extensions in favor of -Wc11-extensions. I don't think we need to keep this around for compatibility. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147221 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27Reference initialization with initializer lists.Sebastian Redl
This supports single-element initializer lists for references according to DR1288, as well as creating temporaries and binding to them for other initializer lists. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145186 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-06Change the AST representation of operations on Objective-CJohn McCall
property references to use a new PseudoObjectExpr expression which pairs a syntactic form of the expression with a set of semantic expressions implementing it. This should significantly reduce the complexity required elsewhere in the compiler to deal with these kinds of expressions (e.g. IR generation's special l-value kind, the static analyzer's Message abstraction), at the lower cost of specifically dealing with the odd AST structure of these expressions. It should also greatly simplify efforts to implement similar language features in the future, most notably Managed C++'s properties and indexed properties. Most of the effort here is in dealing with the various clients of the AST. I've gone ahead and simplified the ObjC rewriter's use of properties; other clients, like IR-gen and the static analyzer, have all the old complexity *and* all the new complexity, at least temporarily. Many thanks to Ted for writing and advising on the necessary changes to the static analyzer. I've xfailed a small diagnostics regression in the static analyzer at Ted's request. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143867 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Macro metaprogramming for builtin types.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142420 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-11Initial implementation of __atomic_* (everything except __atomic_is_lock_free).Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141632 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30Declare and define implicit move constructor and assignment operator.Sebastian Redl
This makes the code duplication of implicit special member handling even worse, but the cleanup will have to come later. For now, this works. Follow-up with tests for explicit defaulting and enabling the __has_feature flag to come. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138821 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Create a new expression node, SubstNonTypeTemplateParmExpr,John McCall
to represent a fully-substituted non-type template parameter. This should improve source fidelity, as well as being generically useful for diagnostics and such. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135243 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-08Teach CXXUnresolvedConstructExpr when it should be anDouglas Gregor
lvalue/xvalue/rvalue, rather than just (incorrectly) assuming it's an lvalue. Fixes PR10285 / <rdar://problem/9743926>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134700 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21A few tweaks to MaterializeTemporaryExpr suggested by John.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133528 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Introduce a new AST node describing reference binding to temporaries.Douglas Gregor
MaterializeTemporaryExpr captures a reference binding to a temporary value, making explicit that the temporary value (a prvalue) needs to be materialized into memory so that its address can be used. The intended AST invariant here is that a reference will always bind to a glvalue, and MaterializeTemporaryExpr will be used to convert prvalues into glvalues for that binding to happen. For example, given const int& r = 1.0; The initializer of "r" will be a MaterializeTemporaryExpr whose subexpression is an implicit conversion from the double literal "1.0" to an integer value. IR generation benefits most from this new node, since it was previously guessing (badly) when to materialize temporaries for the purposes of reference binding. There are likely more refactoring and cleanups we could perform there, but the introduction of MaterializeTemporaryExpr fixes PR9565, a case where IR generation would effectively bind a const reference directly to a bitfield in a struct. Addresses <rdar://problem/9552231>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133521 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Automatic Reference Counting.John McCall
Language-design credit goes to a lot of people, but I particularly want to single out Blaine Garst and Patrick Beard for their contributions. Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself, in no particular order. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133103 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-04Add support for builtin astype:Tanya Lattner
__builtin_astype(): Used to reinterpreted as another data type of the same size using for both scalar and vector data types. Added test case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132612 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21Classify bound member function types are member function types. FixesDouglas Gregor
PR9973 / <rdar://problem/9479191>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131810 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Implementation of Embarcadero array type traitsJohn Wiegley
Patch authored by John Wiegley. These are array type traits used for parsing code that employs certain features of the Embarcadero C++ compiler: __array_rank(T) and __array_extent(T, Dim). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130351 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-25t/clang/expr-traitsJohn Wiegley
Patch authored by David Abrahams. These two expression traits (__is_lvalue_expr, __is_rvalue_expr) are used for parsing code that employs certain features of the Embarcadero C++ compiler. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130122 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-19Add a new expression classification, CL_AddressableVoidPeter Collingbourne
CL_AddressableVoid is the expression classification used for void expressions whose address can be taken, i.e. the result of [], * or void variable references in C, as opposed to things like the result of a void function call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129783 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15C1X: implement generic selectionsPeter Collingbourne
As an extension, generic selection support has been added for all supported languages. The syntax is the same as for C1X. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129554 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12After some discussion with Doug, we decided that it made a lot more senseJohn McCall
for __unknown_anytype resolution to destructively modify the AST. So that's what it does now, which significantly simplifies some of the implementation. Normal member calls work pretty cleanly now, and I added support for propagating unknown-ness through &. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129331 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-26More coherent diagnostic attempting to assign to a member of a const object ↵Fariborz Jahanian
returned from an objective-c message: // rdar://9005189 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128348 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-11Add support for the OpenCL vec_step operator, by generalising andPeter Collingbourne
extending the existing support for sizeof and alignof. Original patch by Guy Benyei. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127475 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Change the representation of GNU ?: expressions to use a different expressionJohn McCall
class and to bind the shared value using OpaqueValueExpr. This fixes an unnoticed problem with deserialization of these expressions where the deserialized form would lose the vital pointer-equality trait; or rather, it fixes it because this patch also does the right thing for deserializing OVEs. Change OVEs to not be a "temporary object" in the sense that copy elision is permitted. This new representation is not totally unawkward to work with, but I think that's really part and parcel with the semantics we're modelling here. In particular, it's much easier to fix things like the copy elision bug and to make the CFG look right. I've tried to update the analyzer to deal with this in at least some obvious cases, and I think we get a much better CFG out, but the printing of OpaqueValueExprs probably needs some work. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125744 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09AST, Sema, Serialization: add CUDAKernelCallExpr and related semantic actionsPeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Remove vtables from the Stmt hierarchy; this was pretty easy asJohn McCall
there were only three virtual methods of any significance. The primary way to grab child iterators now is with Stmt::child_range children(); Stmt::const_child_range children() const; where a child_range is just a std::pair of iterators suitable for being llvm::tie'd to some locals. I've left the old child_begin() and child_end() accessors in place, but it's probably a substantial penalty to grab the iterators individually now, since the switch-based dispatch is kindof inherently slower than vtable dispatch. Grabbing them together is probably a slight win over the status quo, although of course we could've achieved that with vtables, too. I also reclassified SwitchCase (correctly) as an abstract Stmt class, which (as the first such class that wasn't an Expr subclass) required some fiddling in a few places. There are somewhat gross metaprogramming hooks in place to ensure that new statements/expressions continue to implement getSourceRange() and children(). I had to work around a recent clang bug; dgregor actually fixed it already, but I didn't want to introduce a selfhosting dependency on ToT. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125183 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-15Introduce a new expression kind, SubstNonTypeTemplateParmPackExpr,Douglas Gregor
that captures the substitution of a non-type template argument pack for a non-type template parameter pack within a pack expansion that cannot be fully expanded. This follows the approach taken by SubstTemplateTypeParmPackType. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123506 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-04Implement the sizeof...(pack) expression to compute the length of aDouglas Gregor
parameter pack. Note that we're missing proper libclang support for the new SizeOfPackExpr expression node. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122813 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03Implement support for pack expansions whose pattern is a non-typeDouglas Gregor
template argument (described by an expression, of course). For example: template<int...> struct int_tuple { }; template<int ...Values> struct square { typedef int_tuple<(Values*Values)...> type; }; It also lays the foundation for pack expansions in an initializer-list. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17Microsoft's __uuidof operator returns a lvalue.Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122021 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-08Remove the TypesCompatibleExprClass AST node. Merge its functionality into ↵Francois Pichet
BinaryTypeTraitExpr. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Type traits intrinsic implementation: __is_base_of(T, U)Francois Pichet
New AST node introduced: BinaryTypeTraitExpr; to be reused for more intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-06Rename CXXExprWithTemporaries -> ExprWithCleanups; there's no theoreticalJohn McCall
reason this is limited to C++, and it's certainly not limited to temporaries. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120996 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-06Clarify the logic for when to build an overloaded binop. In particular,John McCall
build one when either of the operands calls itself type-dependent; previously we were building when one of the operand types was dependent, which is not always the same thing and which can lead to unfortunate inconsistencies later. Fixes PR8739. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120990 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04Although we currently have explicit lvalue-to-rvalue conversions, they'reJohn McCall
not actually frequently used, because ImpCastExprToType only creates a node if the types differ. So explicitly create an ICE in the lvalue-to-rvalue conversion code in DefaultFunctionArrayLvalueConversion() as well as several other new places, and consistently deal with the consequences throughout the compiler. In addition, introduce a new cast kind for loading an ObjCProperty l-value, and make sure we emit those nodes whenever an ObjCProperty l-value appears that's not on the LHS of an assignment operator. This breaks a couple of rewriter tests, which I've x-failed until future development occurs on the rewriter. Ted Kremenek kindly contributed the analyzer workarounds in this patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Simplify the ASTs by consolidating ObjCImplicitGetterSetterExpr and ↵John McCall
ObjCPropertyRefExpr into the latter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120643 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-24Switch a lot of call-sites over to using the new value-kind calculations.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120084 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23A few tweaks to the value-kind computation:John McCall
- Default argument expressions pick up the value kind of the incoming expression, not the value kind of the parameter it initializes. - When building a template argument for substitution, A::x is an rvalue if x is an instance method. - Anonymous struct/union paths pick up value kind the same way that normal member accesses do; extract out a common code path for this. Enable the value-kind assertion, now that it passes self-host. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120055 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-21Major anonymous union/struct redesign.Francois Pichet
A new AST node is introduced: def IndirectField : DDecl<Value>; IndirectFields are injected into the anonymous's parent scope and chain back to the original field. Name lookup for anonymous entities now result in an IndirectFieldDecl instead of a FieldDecl. There is no functionality change, the code generated should be the same. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119919 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Add an assertion, fix a whole bunch of bugs, comment the assertionJohn McCall
out because there are still bugs left. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Calculate the value kind of an expression when it's created andJohn McCall
store it on the expression node. Also store an "object kind", which distinguishes ordinary "addressed" l-values (like variable references and pointer dereferences) and bitfield, @property, and vector-component l-values. Currently we're not using these for much, but I aim to switch pretty much everything calculating l-valueness over to them. For now they shouldn't necessarily be trusted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-16Simplify some complex emission and implement correct semantics forJohn McCall
assignment to volatiles in C. This in effect reverts some of mjs's work in and around r72572. Basically, the C++ standard is quite clear, except that it lies about volatile behavior approximating C's, whereas the C standard is almost actively misleading. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119344 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-15Add a new expression kind, OpaqueValueExpr, which is useful forJohn McCall
certain internal type-checking procedures as well as for representing certain implicitly-generated operations. Uses to follow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119289 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-06 20:54:15 +0000