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path: root/lib/CodeGen/CGDeclCXX.cpp
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2012-05-01Abstract the emission of global destructors into ABI-specific codeJohn McCall
and only consider using __cxa_atexit in the Itanium logic. The default logic is to use atexit(). Emit "guarded" initializers in Microsoft mode unconditionally. This is definitely not correct, but it's closer to correct than just not emitting the initializer. Based on a patch by Timur Iskhodzhanov! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155894 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-13Fix a trivial oversight with apple-kext static local destructorsJohn McCall
and add a test case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154653 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06Use atexit when __cxa_atexit isn't available instead of adding aJohn McCall
global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154191 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06Rename GenerateCXXGlobalDtorFunc to GenerateCXXGlobalDtorsFunc.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154190 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-30Revert r153723, and its follow-ups r153728 and r153733.Chandler Carruth
These patches cause us to miscompile and/or reject code with static function-local variables in an extern-C context. Previously, we were papering over this as long as the variables are within the same translation unit, and had not seen any failures in the wild. We still need a proper fix, which involves mangling static locals inside of an extern-C block (as GCC already does), but this patch causes pretty widespread regressions. Firefox, and many other applications no longer build. Lots of test cases have been posted to the list in response to this commit, so there should be no problem reproducing the issues. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153768 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-30Do the static-locals thing properly in the face of unions andJohn McCall
other things which might mess with the variable's type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153733 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29Revert r153613 as it's causing large compile-time regressions on the nightly ↵Chad Rosier
testers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153660 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28When we can't prove that the target of an aggregate copy isJohn McCall
a complete object, the memcpy needs to use the data size of the structure instead of its sizeof() value. Fixes PR12204. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153613 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28CodeGen/CGDeclCXX.cpp: Twine-ize CreateGlobalInitOrDestructFunction().NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153578 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11Unify naming of LangOptions variable/get function across the Clang stack ↵David Blaikie
(Lex to AST). The member variable is always "LangOpts" and the member function is always "getLangOpts". Reviewed by Chris Lattner git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-21Emit the exact size for the invariant intrinsics.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151010 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-17Don't emit optimization-specific intrinsic at -O0.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150838 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-17The clang half of r150794: after the construction of a global or static constRichard Smith
variable ends, if the variable has a trivial destructor and no mutable subobjects then emit an llvm.invariant.start call for it. globalopt knows to make the variable const when evaluating this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150798 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-17Whether an argument is required (in contrast with being anJohn McCall
optional argument passed through the variadic ellipsis) potentially affects how we need to lower it. Propagate this information down to the various getFunctionInfo(...) overloads on CodeGenTypes. Furthermore, rename those overloads to clarify their distinct purposes, and make sure we're calling the right one in the right place. This has a nice side-effect of making it easier to construct a function type, since the 'variadic' bit is no longer separable. This shouldn't really change anything for our existing platforms, with one minor exception --- we should now call variadic ObjC methods with the ... in the "right place" (see the test case), which I guess matters for anyone running GNUStep on MIPS. Mostly it's just a substantial clean-up. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150788 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-13Deal with a horrible C++11 special case. If a non-literal type has a constexprRichard Smith
constructor, and that constructor is used to initialize an object of static storage duration such that all members and bases are initialized by constant expressions, constant initialization is performed. In this case, the object can still have a non-trivial destructor, and if it does, we must emit a dynamic initializer which performs no initialization and instead simply registers that destructor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150419 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-07simplify a bunch of code to use the well-known LLVM IR types computed by ↵Chris Lattner
CodeGenModule. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149943 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-26Use function pointers, rather than references, to pass DestroyersPeter Collingbourne
around, in the process cleaning up the various gcc/msvc compiler workarounds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149036 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Switch LValue so that it exposes alignment in CharUnits. (No functional ↵Eli Friedman
change.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145753 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02Extend the ASTContext constructor to delay the initialization ofDouglas Gregor
builtin types (When requested). This is another step toward making ASTUnit build the ASTContext as needed when loading an AST file, rather than doing so after the fact. No actual functionality change (yet). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138985 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Track whether an AggValueSlot is potentially aliased, and do notJohn McCall
emit call results into potentially aliased slots. This allows us to properly mark indirect return slots as noalias, at the cost of requiring an extra memcpy when assigning an aggregate call result into a l-value. It also brings us into compliance with the x86-64 ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138599 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-25Use stronger typing for the flags on AggValueSlot and requireJohn McCall
creators to tell us whether something needs GC barriers. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138581 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Remove some unnecessary single element array temporaries.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136461 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-23remove unneeded llvm:: namespace qualifiers on some core types now that ↵Chris Lattner
LLVM.h imports them into the clang namespace. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135852 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18de-constify llvm::Type, patch by David Blaikie!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135370 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Convert CallInst and InvokeInst APIs to use ArrayRef.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135265 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-13Generalize the routine for destroying an object with staticJohn McCall
storage duration, then explicitly exempt ownership-qualified types from it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135028 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-09clang side to match the LLVM IR type system rewrite patch.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134831 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-01Emit guard variables for any weak global that has a run-timeDouglas Gregor
initializer. Previously, we only used guard variables for weak static data members. Fixes <rdar://problem/9692249>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134266 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-16Restore correct use of GC barriers.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133144 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-15Automatic Reference Counting.John McCall
Language-design credit goes to a lot of people, but I particularly want to single out Blaine Garst and Patrick Beard for their contributions. Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself, in no particular order. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133103 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Eliminate temporary argument vectors.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132260 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Reset the emitted initializers.Axel Naumann
This enables incremental codegen, where the initializer array can be removed from the module, such that only new initializers will be emitted and run. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130986 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Template static data members can have weak_odr linkage, not justJohn McCall
weak linkage. Also, fix a problem where global weak variables with non-trivial initializers were getting guard variables, or at least were checking for them and then crashing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129342 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-20__cxa_atexit does not throw.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127977 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18The Darwin kernel does not provide useful guard variable support.John McCall
Issue this as an IR-gen error; it's not really worthwhile doing this "right", i.e. in Sema, because IR gen knows a lot of tricks beyond what the constant evaluator knows. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127854 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-09Use the "undergoes default argument promotion" bit on parameters toJohn McCall
simplify the logic of initializing function parameters so that we don't need both a variable declaration and a type in FunctionArgList. This also means that we need to propagate the CGFunctionInfo down in a lot of places rather than recalculating it from the FAL. There's more we can do to eliminate redundancy here, and I've left FIXMEs behind to do it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127314 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Revert "Add CC_Win64ThisCall and set it in the necessary places."Tilmann Scheller
This reverts commit 126863. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126886 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Add CC_Win64ThisCall and set it in the necessary places.Tilmann Scheller
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126863 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Get rid of the areExceptionsEnabled() getter from LangOptions.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126598 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Add a LangOptions::areExceptionsEnabled and start using it.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126062 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15In -fapple-kext mode, global object construction code Fariborz Jahanian
ends up in the text segment. // rdar://8825235. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125585 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08Reorganize CodeGen{Function,Module} to eliminate the unfortunateJohn McCall
Block{Function,Module} base class. Minor other refactorings. Fixed a few address-space bugs while I was there. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125085 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-13Save getObjCGCAttrKind and use it in two placesFariborz Jahanian
for efficiancy (still part of //rdar://8761767). Per John's comment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123401 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-13Generate write-barriers for global objcFariborz Jahanian
assigns. // rdar://8761767 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123391 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-06Simplify the logic for emitting guard variables for template staticJohn McCall
data members by delaying the emission of the initializer until after linkage and visibility have been set on the global. Also, don't emit a guard unless the variable actually ends up with vague linkage, and don't use thread-safe statics in any case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118336 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-27Do the guarding of instantiated static data membersFariborz Jahanian
on if its linkage is weak. Currently this is the case but may change in the future. (part of radar 8562966). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-26Patch to provide guard when initializing instancesFariborz Jahanian
of static data member of a class template. Fixes //rdar :// 8562966 and pr8409. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117410 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15one piece of code is responsible for the lifetime of every aggregateJohn McCall
slot. The easiest way to do that was to bundle up the information we care about for aggregate slots into a new structure which demands that its creators at least consider the question. I could probably be convinced that the ObjC 'needs GC' bit should be rolled into this structure. Implement generalized copy elision. The main obstacle here is that IR-generation must be much more careful about making sure that exactly git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Implement ARM static local initialization guards, which are more compact thanJohn McCall
Itanium guards and use a slightly different compiled-in API. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113330 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Teach IR generation to return 'this' from constructors and destructorsJohn McCall
under the ARM ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112588 91177308-0d34-0410-b5e6-96231b3b80d8
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