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2011-01-05Refactor the application of type attributes so that attributes fromJohn McCall
the declaration-specifiers and on the declarator itself are moved to the appropriate declarator chunk. This permits a greatly simplified model for how to apply these attributes, as well as allowing a much more efficient query for the GC attribute. Now all qualifier queries follow the same basic strategy of "local qualifiers, local qualifiers on the canonical type, then look through arrays". This can be easily optimized by changing the canonical qualified-array-type representation. Do not process type attributes as decl attributes on declarations with declarators. When computing the type of a block, synthesize a prototype function declarator chunk if the decl-spec type was not a function. This simplifies the logic for building block signatures. Change the logic which inserts an objc_read_weak on a block literal to only fire if the block has a __weak __block variable, rather than if the return type of the block is __weak qualified, which is not actually a sensible thing to ask. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122871 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15Sundry missing lvalue-to-rvalue conversions. Also leave a TODO for the vitalJohn McCall
future task of performing contextual conversion to size_t in a VLA size expression. :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15Variadic templates: extend the Expr class with a bit that specifiesDouglas Gregor
whether the expression contains an unexpanded parameter pack, in the same vein as the changes to the Type hierarchy. Compute this bit within all of the Expr subclasses. This change required a bunch of reshuffling of dependency calculations, mainly to consolidate them inside the constructors and to fuse multiple loops that iterate over arguments to determine type dependence, value dependence, and (now) containment of unexpanded parameter packs. Again, testing is painfully sparse, because all of the diagnostics will change and it is more important to test the to-be-written visitor that collects unexpanded parameter packs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10It's kindof silly that ExtQuals has an ASTContext&, and we can use thatJohn McCall
space better. Remove this reference. To make that work, change some APIs (most importantly, getDesugaredType()) to take an ASTContext& if they need to return a QualType. Simultaneously, diminish the need to return a QualType by introducing some useful APIs on SplitQualType, which is just a std::pair<const Type *, Qualifiers>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() andJay Foad
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method trunc(), to be const and to return a new value instead of modifying the object in place. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121121 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
2010-12-04Although 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
2010-11-20Revert r119838 "Don't warn for empty 'if' body if there is a macro that ↵Argyrios Kyrtzidis
expands to nothing" and use a better and more general approach, where NullStmt has a flag to indicate whether it was preceded by an empty macro. Thanks to Abramo Bagnara for the hint! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119887 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-19Don't warn for empty 'if' body if there is a macro that expands to nothing, e.g:Argyrios Kyrtzidis
if (condition) CALL(0); // empty macro but don't warn for empty body. Fixes rdar://8436021. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119838 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10Region-allocate all AttributeList objects from a factory object instead of ↵Ted Kremenek
manually managing them using new/delete and OwningPtrs. After memory profiling Clang, I witnessed periodic leaks of these objects; digging deeper into the code, it was clear that our management of these objects was a mess. The ownership rules were murky at best, and not always followed. Worse, there are plenty of error paths where we could screw up. This patch introduces AttributeList::Factory, which is a factory class that creates AttributeList objects and then blows them away all at once. While conceptually simple, most of the changes in this patch just have to do with migrating over to the new interface. Most of the changes have resulted in some nice simplifications. This new strategy currently holds on to all AttributeList objects during the lifetime of the Parser object. This is easily tunable. If we desire to have more bound the lifetime of AttributeList objects more precisely, we can have the AttributeList::Factory object (in Parser) push/pop its underlying allocator as we enter/leave key methods in the Parser. This means that we get simple memory management while still having the ability to finely control memory use if necessary. Note that because AttributeList objects are now BumpPtrAllocated, we may reduce malloc() traffic in many large files with attributes. This fixes the leak reported in: <rdar://problem/8650003> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118675 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-01Emit error when using a bound member function for something other than ↵Argyrios Kyrtzidis
calling it. Also avoids IRGen crashes due to accepting invalid code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117943 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-15Death to blocks, or at least the word "block" in one particular obnoxiouslyJohn McCall
ambiguous context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08Track the location of the context requiring an implicit conversion and use itJohn McCall
to white-list conversions required by system headers. rdar://problem/8232669 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-01Factor out enumerator APSInt adjustment intoGabor Greif
a helper function (AdjustAPSInt) and use that for adjusting the high bounds of case ranges before APSInt comparisons. Fixes http://llvm.org/bugs/show_bug.cgi?id=8135 Some minor refacorings while I am here. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115355 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-28Don't warn for an unused label if it has 'unused' attribute. Fixes ↵Argyrios Kyrtzidis
rdar://8483139. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114954 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-19Implement -Wunused-label.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114315 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-19Warn when an expression result in a LabelStmt is unused.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114314 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16improve the "enumeration value 'g' not handled in switch"Chris Lattner
warning to handle multiple enumerators with one warning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16Do not warn about empty bodies for 'if' statements if the body is expanded ↵Ted Kremenek
from a macro. Fixes <rdar://problem/8436021>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114049 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-09Fix indentation.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113476 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-09Remove tabs I accidentally introduced.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113467 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-09When building SwitchStmts in Sema, record whether all the enum values of a ↵Ted Kremenek
switch(enum) where covered by individual case statements. Flow-based analyses may wish to consult this information, and recording this in the AST allows us to obviate reconstructing this information later when we build the CFG. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113447 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03"I see dead code". IdempotentOperationChecker::isTruncationExtensionAssignmentChris Lattner
should probably be removed if it has no purpose, but I just #if'd it out in case it's usefulIdempotentOperationChecker::isTruncationExtensionAssignment should probably be removed if it has no purpose, but I just #if'd it out in case it's useful git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Devirtualize Sema, kill off DeleteExpr and DeleteStmt, and reformat.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25Split out a header to hold APIs meant for the Sema implementation from Sema.h.John McCall
Clients of Sema don't need to know (for example) the list of diagnostics we support. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25GCC didn't care for my attempt at API compatibility, so brute-force everythingJohn McCall
to the new constants. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-25Split FunctionScopeInfo and BlockScopeInfo into their own header.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112038 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24More header elimination. The goal of all this is to allow Parser toJohn McCall
#include Sema.h while keeping all the AST declarations opaque. That may not be reasonably attainable, though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111907 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-24OwningExprResult -> ExprResult. This patch brought to you byJohn McCall
M-x query-replace-regexp \(Sema::\|Action::\|Parser::\|\)Owning\(Expr\|Stmt\)Result -> \2Result git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111903 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23Kill off ExprArg (now just Expr*) and StmtArg (now just Stmt*).John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21DeclPtrTy -> Decl *John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Typo.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110965 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Patch to issue warning when colllection expresion's typeFariborz Jahanian
does not implement 'countByEnumeratingWithState' API. Implements radar 7634669. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110964 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-12Move Sema's headers into include/clang/Sema, renaming a few along the way.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11IRGen support for functions returning objc objectFariborz Jahanian
types. Fixes PR7865. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-01Only run the jump-checker if there's a branch-protected scope *and* there'sJohn McCall
a switch or goto somewhere in the function. Indirect gotos trigger the jump-checker regardless, because the conditions there are slightly more elaborate and it's too marginal a case to be worth optimizing. Turns off the jump-checker in a lot of cases in C++. rdar://problem/7702918 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Fix namespace polution.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109440 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-25Remove the vast majority of the Destroy methods from the AST library,Douglas Gregor
since we aren't going to be calling them ever. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15Make the "unused result" warning a warning about run-time behavior, soDouglas Gregor
that we don't warn when there isn't going to be any computation anyway. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108442 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Reinstate the fix for PR7556. A silly use of isTrivial() wasDouglas Gregor
suppressing copies of objects with trivial copy constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107857 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Revert r107828 and r107827, the fix for PR7556, which seems to beDouglas Gregor
breaking bootstrap on Linux. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Do not use CXXZeroValueInitExpr for class types. Instead, useDouglas Gregor
CXXConstructExpr/CXXTemporaryObjectExpr/CXXNewExpr as appropriate. Fixes PR7556, and provides a slide codegen improvement when copy-initializing a POD class type from a value-initialized temporary. Previously, we weren't eliding the copy. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30Implement C++ DR299, which allows an implicit conversion from a classDouglas Gregor
type to an integral or enumeration type in the size of an array new expression, e.g., new int[ConvertibleToInt(10)]; This is a GNU and C++0x extension. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107229 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29Re-improve recovery when the condition of a switch statement does notDouglas Gregor
have integral or enumeration type, so that we still check the contents of the switch body. My previous patch made this worse; now we're back to where we were previously. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107223 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29Factor the conversion from a switch condition to an integral orDouglas Gregor
enumeration type out into a separate, reusable routine. The only functionality change here is that we recover a little more aggressively from ill-formed switch conditions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107222 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29With packed enums, an enumerator's value may be stored in more bitsDouglas Gregor
than the enumeration type itself takes. Fixes PR7477. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107163 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22Type Type::isRealFloatingType() that vectors are not floating-pointDouglas Gregor
types, updating callers of both isFloatingType() and isRealFloatingType() accordingly. Caught at least one issue where we allowed one to declare a vector of vectors (!), along with cleaning up the standard-conversion logic for C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-21Alter the internal representation of the condition variable inDouglas Gregor
if/while/switch/for statements to ensure that walking the children of these statements actually works. Previously, we stored the condition variable as a VarDecl. However, StmtIterator isn't able to walk from a VarDecl to a set of statements, and would (in some circumstances) walk beyond the end of the list of statements, cause Bad Behavior. In this change, we've gone back to representing the condition variables as DeclStmts. While not as memory-efficient as VarDecls, it greatly simplifies iteration over the children. Fixes the remainder of <rdar://problem/8104754>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106504 91177308-0d34-0410-b5e6-96231b3b80d8
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