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2011-04-10Simplify calling CheckPlaceholderExpr, converge on it in a few places,John McCall
and move a vector-splat check to follow l-value conversion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129254 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09Fix a bunch of major problems with __unknown_anytype and properly testJohn McCall
for them. The only major missing feature is references. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129234 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09PR8369: make __attribute((regparm(0))) work correctly. Original patch byEli Friedman
pageexec@freemail.hu, tweaks by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-08Use ExprResult& instead of Expr *& in SemaJohn Wiegley
This patch authored by Eric Niebler. Many methods on the Sema class (e.g. ConvertPropertyForRValue) take Expr pointers as in/out parameters (Expr *&). This is especially true for the routines that apply implicit conversions to nodes in-place. This design is workable only as long as those conversions cannot fail. If they are allowed to fail, they need a way to report their failures. The typical way of doing this in clang is to use an ExprResult, which has an extra bit to signal a valid/invalid state. Returning ExprResult is de riguour elsewhere in the Sema interface. We suggest changing the Expr *& parameters in the Sema interface to ExprResult &. This increases interface consistency and maintainability. This interface change is important for work supporting MS-style C++ properties. For reasons explained here <http://lists.cs.uiuc.edu/pipermail/cfe-dev/2011-February/013180.html>, seemingly trivial operations like rvalue/lvalue conversions that formerly could not fail now can. (The reason is that given the semantics of the feature, getter/setter method lookup cannot happen until the point of use, at which point it may be found that the method does not exist, or it may have the wrong type, or overload resolution may fail, or it may be inaccessible.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129143 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07In C++ the argument of logical not should always be bool. Added missing ↵Abramo Bagnara
implicit cast for scalars. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129066 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07Basic, untested implementation for an "unknown any" type requested by LLDB.John McCall
The idea is that you can create a VarDecl with an unknown type, or a FunctionDecl with an unknown return type, and it will still be valid to access that object as long as you explicitly cast it at every use. I'm still going back and forth about how I want to test this effectively, but I wanted to go ahead and provide a skeletal implementation for the LLDB folks' benefit and because it also improves some diagnostic goodness for placeholder expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129065 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-06Wide Pascal strings should be of type wchar_t[] and not unsigned char[].Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129017 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-04When emitting a "too many arguments to function call..." error, also include ↵Ted Kremenek
a note with a location for the function prototype. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-30de-sugared when accessing property reference type.Fariborz Jahanian
Add a test case for synthesize ivar. // rdar://9070460 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128554 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28Don't do the checks of Sema::DiagnoseEqualityWithExtraParens() on ↵Argyrios Kyrtzidis
type-dependent expressions. Fixes rdar://9027658. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128437 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28Implements property of reference types. AddingFariborz Jahanian
an executable test to llvm test suite. // rdar://9070460. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128435 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28refactoringAnton Yartsev
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128427 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-27AltiVec vector comparison logic now affect only vectors of fundamental ↵Anton Yartsev
AltiVec vector types. It fixes bug 9347. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128381 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-27supported: AltiVec vector initialization with a single literal according to ↵Anton Yartsev
PIM section 2.5.1 - after initialization all elements have the value specified by the literal git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128375 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
2011-03-26Allow GC qualifiers to be added/removed by conversions from/to void*John McCall
without a warning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128328 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-23Implement a new 'availability' attribute, that allows one to specifyDouglas Gregor
which versions of an OS provide a certain facility. For example, void foo() __attribute__((availability(macosx,introduced=10.2,deprecated=10.4,obsoleted=10.6))); says that the function "foo" was introduced in 10.2, deprecated in 10.4, and completely obsoleted in 10.6. This attribute ties in with the deployment targets (e.g., -mmacosx-version-min=10.1 specifies that we want to deploy back to Mac OS X 10.1). There are several concrete behaviors that this attribute enables, as illustrated with the function foo() above: - If we choose a deployment target >= Mac OS X 10.4, uses of "foo" will result in a deprecation warning, as if we had placed attribute((deprecated)) on it (but with a better diagnostic) - If we choose a deployment target >= Mac OS X 10.6, uses of "foo" will result in an "unavailable" warning (in C)/error (in C++), as if we had placed attribute((unavailable)) on it - If we choose a deployment target prior to 10.2, foo() is weak-imported (if it is a kind of entity that can be weak imported), as if we had placed the weak_import attribute on it. Naturally, there can be multiple availability attributes on a declaration, for different platforms; only the current platform matters when checking availability attributes. The only platforms this attribute currently works for are "ios" and "macosx", since we already have -mxxxx-version-min flags for them and we have experience there with macro tricks translating down to the deprecated/unavailable/weak_import attributes. The end goal is to open this up to other platforms, and even extension to other "platforms" that are really libraries (say, through a #pragma clang define_system), but that hasn't yet been designed and we may want to shake out more issues with this narrower problem first. Addresses <rdar://problem/6690412>. As a drive-by bug-fix, if an entity is both deprecated and unavailable, we only emit the "unavailable" diagnostic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128127 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-22Fix an error with the declaration of block parameters that dependJohn McCall
on previous block parameters that crept in as part of my captures work a month or so ago. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128121 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Clean up our handling of template-ids that resolve down to a singleDouglas Gregor
overload, so that we actually do the resolution for full expressions and emit more consistent, useful diagnostics. Also fixes an IRGen crasher, where Sema wouldn't diagnose a resolvable bound member function template-id used in a full-expression (<rdar://problem/9108698>). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127747 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Don't indescriminately print overload candidates when we have invalidDouglas Gregor
operands to a binary expression; it doesn't make sense in all contexts. The right answer would be to see if the user forgot at (). Fixes <rdar://problem/9136502>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127740 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-16Allow function calls to dereferenced member pointers ofDouglas Gregor
pointer-to-function type. Fixes <rdar://problem/9065289>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127739 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-15Don't poke into redefined 'id' type looking for a propertyFariborz Jahanian
declaration as this results in a confusing error message, instead of message related to missing property declaration. // rdar://9106929 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127682 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-12Forgotten part of previous commit.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127536 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-12Fixes for some more expressions containing function templateids thatDouglas Gregor
should be resolvable, from Faisal Vali! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127521 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-11OpenCL: if double precision floating point constant encounteredPeter Collingbourne
without cl_khr_fp64, warn and cast to single precision git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127476 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
2011-03-11When comparing a null pointer and something else, always cast the nullJohn McCall
pointer instead of the other operand. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127458 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-08Fixed source range for all DeclaratorDecl's.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127225 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-08Fix my earlier commit to work with escaped newlines and leave breadcrumbsJohn McCall
in case we want to make a world where we can check intermediate instantiations for this kind of breadcrumb. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127221 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-08Update the check for a NULL macro to use Preprocessor::getSpelling().John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-05Much to my surprise, OverloadExprs can also point to function template decls.Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127061 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01Don't warning about shifting by too many bits in dead code.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126770 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01For C++, enhance -Warray-bounds to recursively analyze array subscript ↵Ted Kremenek
accesses in ?: expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126766 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01Don't wanr about "negative shifts" in code that is unreachable. Fixes PR 5544.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126762 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01Implement comparison of C++0x scoped enumeration types. Fixes PR9333.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126752 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Push nested-name-specifier location information into DeclRefExpr andDouglas Gregor
MemberExpr, the last of the expressions with qualifiers! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126688 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Push nested-name-specifier source location information intoDouglas Gregor
UnresolvedLookupExpr and UnresolvedMemberExpr. Also, improve the computation that checks whether the base of a member expression (either unresolved or dependent-scoped) is implicit. The previous check didn't cover all of the cases we use in our representation, which threw off source-location information for these expressions (which, in turn, caused some breakage in libclang's token annotation). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126681 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Push nested-name-specifier source location information intoDouglas Gregor
CXXDependentScopeMemberExpr, and clean up instantiation of nested-name-specifiers with dependent template specialization types in the process. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126663 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-26Provide a bit saying that a builtin undergoes custom type-checking, thenJohn McCall
don't let calls to such functions go down the normal type-checking path. Test this out with __builtin_classify_type and __builtin_constant_p. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126539 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Handle value dependent LHS as well as RHS. Test both of these, theyChandler Carruth
don't seem to have been covered by our tests previously. This should fix bootstrap failure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126345 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Implement a warning for known shift overflows on constant shiftChandler Carruth
expressions. Consider the code: int64_t i = 10 << 30; This compiles fine, but most developers expect it to produce the value for 10 gigs, not -2 gigs. This is actually undefined behavior because the LHS is a signed integer type. The warning is currently gated behind -Wshift-overflow. There is a special case where only the sign bit is overridden that gets a custom error message and is by default ignored. This case is much less likely to cause observed buggy behavior, it's just undefined behavior according to the spec. This warning can be enabled with -Wshift-sign-overflow. Original patch by Oleg Slezberg, with style tweaks and some correctness fixes by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126342 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Sema: diagnose kernel calls to non-global functionsPeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126292 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Enhance Sema::DiagRuntimeBehavior() to delay some diagnostics to see if the ↵Ted Kremenek
related code is reachable. This suppresses some diagnostics that occur in unreachable code (e.g., -Warray-bound). We only pay the cost of doing the reachability analysis when we issue one of these diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126290 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Issue AnalysisBasedWarnings as part of calling ↵Ted Kremenek
Sema::PopBlockOrFunctionScope(). No real functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126287 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Update Sema::DiagRuntimeBehavior() to take an optional Stmt* to indicate the ↵Ted Kremenek
code the diagnostic is associated with. This Stmt* is unused, but we will use it shortly for pruning diagnostics associated with unreachable code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126286 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-22Clean up the error recovery at the bottom of Sema::LookupMemberExpr. ThisMatt Beaumont-Gay
mostly just shuffles various possibilities for recovery into a more straightforward order, but also unifies a couple of diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126266 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21Tweaks to C++0x deduced auto type support:Richard Smith
* Flag indicating 'we're parsing this auto typed variable's initializer' moved from VarDecl to Sema * Temporary template parameter list for auto deduction is now allocated on the stack. * Deduced 'auto' types are now uniqued. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126139 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21Don't warn about static const integral data members with in-line constantJohn McCall
initializers just because they don't have a proper out-of-line definition. Such code is technically ill-formed but is too common and too unlikely to be a problem to be seriously worth worrying about. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126137 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21Remove warning on future change in ivar lookup ruleFariborz Jahanian
when doing the property default synthesis. // rdar://9027673. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126128 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Implement the C++0x deduced 'auto' feature.Richard Smith
This fixes PR 8738, 9060 and 9132. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126069 91177308-0d34-0410-b5e6-96231b3b80d8
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