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* Get rid of an unnecessary getMangledName overload.Anders Carlsson2010-06-091-12/+1
| | | | llvm-svn: 105671
* When deciding whether a deferred declaration has already been emitted,John McCall2010-05-271-3/+13
| | | | | | | aliases count as definitions regardless of whether their target has been emitted yet. Fixes PR 7142. llvm-svn: 104796
* IRgen: Add a stub class for generating ABI-specific C++ code.Charles Davis2010-05-251-1/+11
| | | | | | | | 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. llvm-svn: 104630
* If a function definition has any sort of weak linkage, its static localJohn McCall2010-05-251-1/+1
| | | | | | | | | | | | 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. llvm-svn: 104581
* Disable the available_externally optimization for inline virtualDouglas Gregor2010-05-131-11/+0
| | | | | | | | | | | | methods for which the key function is guaranteed to be in another translation unit. Unfortunately, this guarantee isn't the case when dealing with shared libraries that fail to export these virtual method definitions. I'm reopening PR6747 so we can consider this again at a later point in time. llvm-svn: 103741
* Rework when and how vtables are emitted, by tracking where vtables areDouglas Gregor2010-05-131-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "used" (e.g., we will refer to the vtable in the generated code) and when they are defined (i.e., because we've seen the key function definition). Previously, we were effectively tracking "potential definitions" rather than uses, so we were a bit too eager about emitting vtables for classes without key functions. The new scheme: - For every use of a vtable, Sema calls MarkVTableUsed() to indicate the use. For example, this occurs when calling a virtual member function of the class, defining a constructor of that class type, dynamic_cast'ing from that type to a derived class, casting to/through a virtual base class, etc. - For every definition of a vtable, Sema calls MarkVTableUsed() to indicate the definition. This happens at the end of the translation unit for classes whose key function has been defined (so we can delay computation of the key function; see PR6564), and will also occur with explicit template instantiation definitions. - For every vtable defined/used, we mark all of the virtual member functions of that vtable as defined/used, unless we know that the key function is in another translation unit. This instantiates virtual member functions when needed. - At the end of the translation unit, Sema tells CodeGen (via the ASTConsumer) which vtables must be defined (CodeGen will define them) and which may be used (for which CodeGen will define the vtables lazily). From a language perspective, both the old and the new schemes are permissible: we're allowed to instantiate virtual member functions whenever we want per the standard. However, all other C++ compilers were more lazy than we were, and our eagerness was both a performance issue (we instantiated too much) and a portability problem (we broke Boost test cases, which now pass). Notes: (1) There's a ton of churn in the tests, because the order in which vtables get emitted to IR has changed. I've tried to isolate some of the larger tests from these issues. (2) Some diagnostics related to implicitly-instantiated/implicitly-defined virtual member functions have moved to the point of first use/definition. It's better this way. (3) I could use a review of the places where we MarkVTableUsed, to see if I missed any place where the language effectively requires a vtable. Fixes PR7114 and PR6564. llvm-svn: 103718
* Do not give implicitly-defined virtual members functionsDouglas Gregor2010-05-061-2/+2
| | | | | | | | | | | | | available_externally linkage, since they may not have been given a strong definition in another translation unit. Without this patch, the following test case fails to link with a GCC-compiled libstdc++: #include <sstream> int main() { std::basic_stringbuf<char> bs; } Fixes the last problem with the Boost.IO library. llvm-svn: 103208
* When we emit a non-constant initializer for a global variable ofDouglas Gregor2010-05-051-2/+4
| | | | | | | | reference type, make sure that the initializer we build is the of the appropriate type for the *reference*, not for the thing that it refers to. Fixes PR7050. llvm-svn: 103115
* IRGen for initialization/destruction ofFariborz Jahanian2010-04-281-0/+34
| | | | | | | ivar class objects (NeXt runtime). (radar 7900343). llvm-svn: 102533
* Properly pass the address of a lazily-generated function declaration withJohn McCall2010-04-281-5/+16
| | | | | | incomplete type. Fixes PR6911. llvm-svn: 102473
* More -fno-constant-cfstrings API work.Fariborz Jahanian2010-04-231-4/+9
| | | | llvm-svn: 102219
* More work toward implementingFariborz Jahanian2010-04-231-2/+76
| | | | | | NeXt's -fno-constant-cfstrings - wip. llvm-svn: 102189
* Support for -fno-constant-cfstrings option - wip.Fariborz Jahanian2010-04-221-0/+6
| | | | llvm-svn: 102112
* Add comment explaning the use of c99 inline in c++.Rafael Espindola2010-04-191-0/+4
| | | | llvm-svn: 101787
* Fix -Wcast-qual warnings.Dan Gohman2010-04-191-1/+1
| | | | llvm-svn: 101786
* If a method is virtual and the class key function is in another file, emit ↵Rafael Espindola2010-04-191-1/+8
| | | | | | | | the method as available_externally. Fixes PR6747 llvm-svn: 101757
* Vtable -> VTable renames across the board.Anders Carlsson2010-04-171-6/+6
| | | | llvm-svn: 101666
* unbreak tests.Chris Lattner2010-04-131-6/+6
| | | | llvm-svn: 101153
* minor cleanupsChris Lattner2010-04-131-26/+28
| | | | llvm-svn: 101151
* Fix use after free. Incrementing an use_iterator after its user is erased is ↵Benjamin Kramer2010-04-101-3/+4
| | | | | | unsafe. llvm-svn: 100926
* rely even less on CallInst internalsGabor Greif2010-04-101-7/+6
| | | | llvm-svn: 100919
* do not rely on CallInst interna, use CallSite to access argumentsGabor Greif2010-04-101-1/+3
| | | | llvm-svn: 100918
* Provide an extremely unsatisfactory diagnostic (instead of crashing) whenJohn McCall2010-04-091-1/+2
| | | | | | | mangling an unknown expression kind. Also conveniently tells the user what kind of expression they should add to the mangler! llvm-svn: 100907
* Eliminate excessive PCH deserialization caused by the search forDouglas Gregor2010-04-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | __cxxabiv1::__fundamental_type_info in every translation unit. Previously, we would perform name lookup for __cxxabiv1::__fundamental_type_info at the end of IRGen for a each translation unit, to determine whether it was present. If so, we we produce type information for all of the fundamental types. However, this name lookup causes PCH deserialization of a significant part of the translation unit, which has a woeful impact on performance. With this change, we now look at each record type after we've generated its vtable to see if it is __cxxabiv1::__fundamental_type_info. If so, we generate type info for all of the fundamental types. This works because __cxxabiv1::__fundamental_type_info should always have a key function (typically the virtual destructor), that will be defined once in the support library. The fundamental type information will end up there. Fixes <rdar://problem/7840011>. llvm-svn: 100772
* Reapply patch for adding support for address spaces and added a isVolatile ↵Mon P Wang2010-04-041-14/+16
| | | | | | field to memcpy, memmove, and memset. llvm-svn: 100305
* Revert r100193 since it causes failures in objc in clangMon P Wang2010-04-021-16/+14
| | | | llvm-svn: 100200
* Reapply patch for adding support for address spaces and added a isVolatile ↵Mon P Wang2010-04-021-14/+16
| | | | | | field to memcpy, memmove, and memset. llvm-svn: 100193
* adjust to IRBuilder change and use faster DebugLoc apis.Chris Lattner2010-04-011-3/+3
| | | | llvm-svn: 100093
* use the new optimized debug info metadata accessors. InChris Lattner2010-03-311-2/+2
| | | | | | | | addition to the inherent win, this eliminates the pointless cost of going through the name -> mdkind stringmap that we were paying. llvm-svn: 99983
* Revert Mon Ping's 99930 due to broken llvm-gcc buildbots.Bob Wilson2010-03-301-16/+14
| | | | llvm-svn: 99949
* Added support for address spaces and added a isVolatile field to memcpy, ↵Mon P Wang2010-03-301-14/+16
| | | | | | memmove, and memset llvm-svn: 99930
* When given the magic class __cxxabiv1::__fundamental_type_info, produceRafael Espindola2010-03-271-0/+1
| | | | | | | | the typeinfo for the fundamental types. Fixes PR6685. llvm-svn: 99701
* revert 99311. Looks like it broke darwin bootstrap.Rafael Espindola2010-03-231-11/+2
| | | | llvm-svn: 99317
* Avoid producing implicit methods when we have a explicit template instantiationRafael Espindola2010-03-231-2/+11
| | | | | | declaration. llvm-svn: 99311
* Always emit associated thunks when emitting the function itself. Remove ↵Anders Carlsson2010-03-231-15/+4
| | | | | | getVtableAddressPoint, it's not used. llvm-svn: 99252
* Rename MaybeEmitVtable to EmitVTableRelatedData in preparation for making it ↵Anders Carlsson2010-03-231-1/+1
| | | | | | emit thunks as well. llvm-svn: 99251
* Rename CGVtableInfo to CodeGenVTables in preparation of adding another ↵Anders Carlsson2010-03-231-3/+3
| | | | | | VTableInfo class. llvm-svn: 99250
* C++: Add support for -fno-use-cxa-atexit.Daniel Dunbar2010-03-201-0/+1
| | | | | | | | - So much typing, so little gain... Also, rename the __cxx_global_initialization function just to match llvm-gcc. llvm-svn: 99039
* Change CodeGenModule to rely on the Module's symbol table instead ofJohn McCall2010-03-191-86/+72
| | | | | | | | | | | | | shadowing it in the GlobalDeclMap. Eliminates the string-uniquing requirement for mangled names, which should help C++ codegen times a little. Forces us to do string lookups instead of pointer lookups, which might hurt codegen times a little across the board. We'll see how it plays out. Removing the string-uniquing requirement implicitly fixes any bugs like PR6635 which arose from the fact that we had multiple uniquing tables for different kinds of identifiers. llvm-svn: 99012
* Give explicit template instantiations weak ODR linkage. FormerDouglas Gregor2010-03-131-7/+16
| | | | | | | | | iterations of this patch gave explicit template instantiation link-once ODR linkage, which permitted the back end to eliminate unused symbols. Weak ODR linkage still requires the symbols to be generated. llvm-svn: 98441
* Re-revert the explicit template instantiation linkage patch. I am beginning ↵Douglas Gregor2010-03-131-10/+8
| | | | | | to look incompetent llvm-svn: 98425
* Reinstate patch to turn explicit template instantiations into weak symbolsDouglas Gregor2010-03-131-8/+10
| | | | llvm-svn: 98424
* Revert the linkage change for explicit template instantiations; something is ↵Douglas Gregor2010-03-121-10/+8
| | | | | | amiss llvm-svn: 98332
* Give explicit template instantiations weak linkage (but don't deferDouglas Gregor2010-03-121-8/+10
| | | | | | them). Fixes PR6578. llvm-svn: 98328
* Delay codegen of vtables when handling implicit instantiations.Rafael Espindola2010-03-101-1/+9
| | | | | | This fixes PR6474. llvm-svn: 98123
* Add a message to these asserts.Benjamin Kramer2010-03-061-3/+3
| | | | llvm-svn: 97873
* Implement __builtin_dwarf_sp_column for i386 (Darwin and not), x86-64 (all),John McCall2010-03-061-0/+5
| | | | | | | and ARM. Implement __builtin_init_dwarf_reg_size_table for i386 (both) and x86-64 (all). llvm-svn: 97859
* Fix PR6473.Rafael Espindola2010-03-041-0/+47
| | | | | | | | | Clang's support for weakref is now better than llvm-gcc's :-) We don't introduce a new symbol and we correctly mark undefined references weak only if there is no definition or regular undefined references in the same file. llvm-svn: 97733
* Revert changes r97693, r97700, and r97718.John McCall2010-03-041-4/+3
| | | | | | Our testing framework can't deal with disabled targets yet. llvm-svn: 97719
* Refactor local class name mangling and make itFariborz Jahanian2010-03-041-1/+1
| | | | | | ABI conforming. llvm-svn: 97702
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