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2010-05-26Extract the ObjC and blocks manglers into their own class. No functionalityCharles Davis
change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104715 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-26Be sure to use the standard substitutions when mangling the names ofDouglas Gregor
vtables, VTTs, and construction vtables. Fixes PR7201. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104675 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25IRgen: Add a stub class for generating ABI-specific C++ code.Charles Davis
This class only supports name mangling (which is apparently used during C/ObjC codegen). For now only the Itanium C++ ABI is supported. Patches to add a second C++ ABI are forthcoming. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104630 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25Fix compilation failureDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25Improve name mangling for blocks and support mangling of static localDouglas Gregor
variables within blocks. We loosely follow GCC's mangling, but since these are always internal symbols the names don't really matter. I intend to revisit block mangling later, because GCC's mangling is rather verbose. <rdar://problem/8015719>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104610 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25If a function definition has any sort of weak linkage, its static localJohn McCall
variables should have that linkage. Otherwise, its static local variables should have internal linkage. To avoid computing this excessively, set a function's linkage before we emit code for it. Previously we were assigning weak linkage to the static variables of static inline functions in C++, with predictably terrible results. This fixes that and also gives better linkage than 'weak' when merging is required. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-23Add a comment for r104472.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104473 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-23PR5863: Don't erase unreachable BBs which have an associated cleanup size.Benjamin Kramer
This works around a crash where malloc reused the memory of an erased BB for a new BB leaving old cleanup information pointing at the new block. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104472 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Re-teach IR gen to perform GC moves on rvalues resulting from various ObjCJohn McCall
expressions. Essentially, GC breaks a certain form of the return-value optimization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104454 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Really fix PR7139. There was one boost test that we still failed, and my ↵Anders Carlsson
first fix broke self-host. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104447 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-22Re-land the fix for PR7139.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104446 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
2010-05-22Push a return-value slot throughout ObjC message-send codegen. Will beJohn McCall
critical for ObjC++ correctness; hard to test independently of various required Sema changes, though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Unbreak self-host.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104390 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Rename CodeGenFunction::EmitMemSetToZero to EmitNullInitialization. Handle ↵Anders Carlsson
setting null data member pointers correctly. Fixes PR7139. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104387 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Don't remove the break/continue scope of a for loop until after we'veDouglas Gregor
emitted the increment expression. Fixes PR7189. If someone knows how to write a useful test for this, I'd be grateful. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104335 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21When generating the call arguments in a thunk to call the thunkee, doDouglas Gregor
not make copies non-POD arguments or arguments passed by reference: just copy the pointers directly. This eliminates another source of the dreaded memcpy-of-non-PODs. Fixes PR7188. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104327 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Add braces to avoid an ambiguous else, fixing a GCC warning.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104314 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21Allocate space in a block record for implicit references to the Objective CJohn McCall
'self' variable arising from uses of the 'super' keyword. Also reorganize some code so that BlockInfo (now CGBlockInfo) can be opaque outside of CGBlocks.cpp. Fixes rdar://problem/8010633. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104312 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21When emitting an lvalue for an anonymous struct or union member duringJohn McCall
class initialization, drill down through an arbitrary number of anonymous records. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104310 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Adds support for generation of objc_memmove_collectable APIFariborz Jahanian
in Objective-C++ mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104281 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Copy construction of non-trivial properties must notFariborz Jahanian
be turned into a setter call (fixes radar 8008649). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104235 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Picky, pickyDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104230 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Fix a thinkoDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104229 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Assert that we do not try to memcpy a non-POD class type in C++. ThisDouglas Gregor
particular issue was the cause of the Boost.Interprocess failures, and in general will lead to horrendous, hard-to-diagnose miscompiles. The assertion itself has survives self-host and a full Boost build, so we are close to eradicating this problem in C++. Note that the assertion is *not* turned on for Objective-C++, where we still have problems with introducing memcpy's of non-POD class types. That part of the assertion will go away as soon as we fix the known issues in Objective-C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104227 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Fix my inability to spell 'continue' and a case where message sends ↵David Chisnall
returning non-pointer-sized things were generating invalid IR inside @try blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104222 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20Rework our handling of binding a reference to a temporaryDouglas Gregor
subobject. Previously, we could only properly bind to a base class subobject while extending the lifetime of the complete object (of a derived type); for non-static data member subobjects, we could memcpy (!) the result and bind to that, which is rather broken. Now, we pull apart the expression that we're binding to, to figure out which subobject we're accessing, then construct the temporary object (adding a destruction if needed) and, finally, dig out the subobject we actually meant to access. This fixes yet another instance where we were memcpy'ing rather than doing the right thing. However, note the FIXME in references.cpp: there's more work to be done for binding to subobjects, since the AST is incorrectly modeling some member accesses in base classes as lvalues when they are really rvalues. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104219 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-20When creating a this-adjustment thunk where the return value is of C++Douglas Gregor
class type (that uses a return slot), pass the return slot to the callee directly rather than allocating new storage and trying to copy the object. This appears to have been the cause of the remaining two Boost.Interprocess failures. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104215 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
2010-05-19Implement codegen for __builtin_isnormal.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104118 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Add support for Microsoft's __thiscall, from Steven Watanabe!Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104026 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Correctly initialize bases with member pointers. This should fix PR6441 but ↵Anders Carlsson
that test case is a bit weird and I'd like to investigate further before closing that bug. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104025 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Keep track of the LLVM field numbers for non-virtual bases.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104013 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Start laying out bases as individual fields. We still use ugly i8 arrays but ↵Anders Carlsson
this is a step in the right direction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104012 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Add CodeGenTypes::ContainsPointerToDataMember overload that takes a ↵Anders Carlsson
CXXRecordDecl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Clean up some more uses of getAs<ObjCInterfaceType>() that Fariborz pointedJohn McCall
out. The remaining ones are okay. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103973 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Fix an ambiguous else warning from GCC by adding some much needed curlies.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Correctly generate IR for ObjC messages sends to protocol-qualified types.John McCall
Fixes rdar://problem/7992749 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103965 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17IRgen: Remove dead function.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17C++/Darwin/i386 ABI: Fix some problems with empty record handling.Daniel Dunbar
- Check bases as part of isEmptyRecord(). - C++ record fields are never empty in the Itanium ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103944 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Ensure that destructors are called for NRVO'd objects when theDouglas Gregor
function does not return. Thanks to Eli for pointing out this corner case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-17Pick the correct personality function based on the language. This prevents ↵David Chisnall
link failures when C/ObjC code uses __attribute__((cleanup())) (previously this was inserting references to two libstc++ symbols; the personality function and the __terminate() function). This is still probably wrong for Objective-C++ and adds a couple of lines in CGException that should probably be in the CGObjCRuntime subclass. The personality function is now only looked up in one place in CGException though, so this should be easier to fix in the future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103938 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-16When initializing thread-safe statics, put the call toDouglas Gregor
__cxa_guard_abort along the exceptional edge into (in effect) a nested "try" that rethrows after aborting. Fixes PR7144 and the remaining Boost.ProgramOptions failures, along with the regressions that r103880 caused. The crucial difference between this and r103880 is that we now follow LLVM's little dance with the llvm.eh.exception and llvm.eh.selector calls, then use _Unwind_Resume_or_Rethrow to rethrow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103892 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-16Revert r103880 (thread-safe static initialization w/ exceptions),Douglas Gregor
because it's causing strange linker errors. Unfixes PR7144. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-16Minor twik to my last patch. (for radar 7986354).Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Fix API gen for objc_msgSend property of aggregate typesFariborz Jahanian
in Objective-c++ mode. Fixes radar 7986354. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103887 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15When initializing thread-safe statics, put the call toDouglas Gregor
__cxa_guard_abort along the exceptional edge into (in effect) a nested "try" that rethrows after aborting. Fixes PR7144 and the remaining Boost.ProgramOptions failures. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103880 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15Modify this comment per Doug's suggestion: we don't need to mangle protocols.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-15When applying the named return value optimization, we still need toDouglas Gregor
destroy the variable along the exceptional edge; it's only during normal execution that we avoid destroying this variable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103872 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
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