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path: root/lib/AST/ExprConstant.cpp
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2009-01-24Fix invalid evaluation of _Complex float (real & imaginary parts hadDaniel Dunbar
mismatched semantics). - Enforce this in APValue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62924 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18Support evaluation of vector constant expressions, and codegen of same.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62455 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16postpone sizeof objc-class computatin to the clients.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62292 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-15Fix some unused variable, control reaches end of non-void function,Daniel Dunbar
and uninitialized use options. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62270 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-05PODness and Type TraitsSebastian Redl
Make C++ classes track the POD property (C++ [class]p4) Track the existence of a copy assignment operator. Implicitly declare the copy assignment operator if none is provided. Implement most of the parsing job for the G++ type traits extension. Fully implement the low-hanging fruit of the type traits: __is_pod: Whether a type is a POD. __is_class: Whether a type is a (non-union) class. __is_union: Whether a type is a union. __is_enum: Whether a type is an enum. __is_polymorphic: Whether a type is polymorphic (C++ [class.virtual]p1). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-21Add codegen support for __nullAnders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61314 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-20Add support for member references (E1.E2, E1->E2) with C++ semantics,Douglas Gregor
which can refer to static data members, enumerators, and member functions as well as to non-static data members. Implement correct lvalue computation for member references in C++. Compute the result type of non-static data members of reference type properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61294 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-19Get rid of the old Expr::Evaluate variant.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61260 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-11Unifies the name-lookup mechanisms used in various parts of the ASTDouglas Gregor
and separates lexical name lookup from qualified name lookup. In particular: * Make DeclContext the central data structure for storing and looking up declarations within existing declarations, e.g., members of structs/unions/classes, enumerators in C++0x enums, members of C++ namespaces, and (later) members of Objective-C interfaces/implementations. DeclContext uses a lazily-constructed data structure optimized for fast lookup (array for small contexts, hash table for larger contexts). * Implement C++ qualified name lookup in terms of lookup into DeclContext. * Implement C++ unqualified name lookup in terms of qualified+unqualified name lookup (since unqualified lookup is not purely lexical in C++!) * Limit the use of the chains of declarations stored in IdentifierInfo to those names declared lexically. * Eliminate CXXFieldDecl, collapsing its behavior into FieldDecl. (FieldDecl is now a ScopedDecl). * Make RecordDecl into a DeclContext and eliminates its Members/NumMembers fields (since one can just iterate through the DeclContext to get the fields). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60878 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-08Workaround for PR3173. The fix is correct in the sense that if the enum Eli Friedman
code were working correctly, it would be a no-op, but it's not really a proper fix. That said, I don't really want to touch the enum code at the moment because I don't understand it very well, and this seems to be a relatively visible regression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05This wasn't such a good idea after all as it broke some tests.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60582 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Handle __builtin___CFStringMakeConstantString in Expr::Evaluate.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60581 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01Generate the correct results for the comma expression. Fixes PR3123.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60334 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-01Emit the correct diagnostic when a comma is in an ICE.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60316 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Change the diagnostics that the evaluator reports to be of type NOTE.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60301 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Replace the isEvaluated bool with a ShortCircuit int, making it easier to ↵Anders Carlsson
handle recursion git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60300 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Pass the expression to the Error and Extension methods.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60299 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30Add a new variant of Evaluate and reimplement the old Evaluate in terms of ↵Anders Carlsson
the new. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60298 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30General cleanup, evaluate the RHS of a logical op even if the LHS will give ↵Anders Carlsson
us the result. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60297 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-30EvalInfo now holds a reference to an EvalResult struct.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60296 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-26remove debug-only assertion in the complex float evaluator as it makes some ↵Nuno Lopes
real apps crash git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60069 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24The address of a variable is only constant if the variable has global storage.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59939 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24Fix bug in the constant evaluator. Fixes PR3115.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59938 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Return false if we encounter a type we can't handle.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59889 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Case values must be evaluatedAnders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59884 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-22Use Expr::Evaluate for case statements. Fixes PR2525Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-19fix folding of '*doubleArray'Nuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59647 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16Address some comments Eli had.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16use HandleConversionToBool() to check if a given cond is foldable (per Eli's ↵Nuno Lopes
comment) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59429 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16More complex float evaluator support.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59428 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16rename Expr::tryEvaluate to Expr::Evaluate.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59426 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16Add very limited support for evaluating complex floats.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59425 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16fix folding of comma if given a non-constant operand.Nuno Lopes
Eli please take a look, as I'm not sure if this gets the extension warning in the right place git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59422 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16make IntExprEvaluator fold the ?: operatorNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59421 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16More work on the constant evaluator. Eli, it would be great if you could ↵Anders Carlsson
have a look at this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59420 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-16Add the ability to evaluate comparison operators with floating point numbers ↵Anders Carlsson
as operands. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59408 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Fix for crash issues with comma operators with a void first operand, and Eli Friedman
some more bullet-proofing/enhancements for tryEvaluate. This shouldn't cause any behavior changes except for handling cases where we were crashing before and being able to evaluate a few more cases in tryEvaluate. This should settle the minor mess surrounding r59196. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59224 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Backout of r59196, plus a new ICE test. Sorry if this is a Eli Friedman
little rude; I figure it's cleaner to just back this out now so it doesn't get forgotten or mixed up with other checkins. The modification to isICE is simply wrong; I've added a test that the change to isICE breaks. I'm pretty sure the modification to tryEvaluate is also wrong. At the very least, there's some serious miscommunication going on here, as this is going in exactly the opposite direction of r59105. My understanding is that tryEvaluate is not supposed to care about side effects. That said, a lot of the clients to tryEvaluate are expecting it to enforce a no-side-effects policy, so we probably need another method that provides that guarantee. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59212 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Fix bug in constant evaluation exposed by 176.gcc.Daniel Dunbar
- Evaluation of , operator used bogus assumption that LHS could be evaluated as an integral expression even though its type is unspecified. This change is making isICE very permissive of the LHS in non-evaluated contexts because it is not clear what predicate we would use to reject code here. The standard didn't offer me any guidance; opinions? git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59196 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Disable some debug prints.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59174 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Some additions to tryEvaluate I've had sitting around for a while.Eli Friedman
This pushes it a lot closer to being able to deal with most of the stuff CodeGen's constant expression evaluator knows how to deal with. This also fixes PR3003. The test could possibly use some improvement, but this'll work for now. Test 6 is inspired by PR3003; the other tests are mostly just designed to exercise the new code. The reason for the funny structure of the tests is that type fixing for arrays inside of structs is the only place in Sema that calls tryEvaluate, at least for the moment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59125 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12fix a crash analyzing constants in 176.gcc/expr.c with my next patch. It wasChris Lattner
crashing because we errors are ignored in subexpressions that are not evaluated, but we still evaluate the result of parents. This would cause an assertion because the erroneous subexpr didn't have its result value set to the right type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59110 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12Teach the aggressive constant folder to fold X && 0 -> 0 and X || 1 -> 1Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59105 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-11Introduce a single AST node SizeOfAlignOfExpr for all sizeof and alignof ↵Sebastian Redl
expressions, both of values and types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59057 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-24PR2919: __builtin_types_compatible_p strips CRV qualifiers.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58079 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16Teach tryEvaluate that fabs, copysign, and unary +/- are constants forDaniel Dunbar
floats. - With testcase, which also has some other things GCC folds but we don't commented out in it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57624 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-14Fix test suite regression, getFloatTypeSemantics shouldn't be calledDaniel Dunbar
on non-float types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57477 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-09Adjust calls to APFloat conversion for new interface.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57332 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-06ExprConstant should not abort when it sees a pointer constant that isn't.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57162 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-06Add a Expr::isEvaluatable method, eliminate isBuiltinConstantExprChris Lattner
which is checking for something that can be inconsistent with what we can constant fold. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57159 91177308-0d34-0410-b5e6-96231b3b80d8
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