Duncan Sands 667d4b8de6 Introduce new linkage types linkonce_odr, weak_odr, common_odr ... and extern_weak_odr. These are the same as the non-odr versions, except that they indicate that the global will only be overridden by an *equivalent* global. In C, a function with weak linkage can be overridden by a function which behaves completely differently. This means that IP passes have to skip weak functions, since any deductions made from the function definition might be wrong, since the definition could be replaced by something completely different at link time. This is not allowed in C++, thanks to the ODR (One-Definition-Rule): if a function is replaced by another at link-time, then the new function must be the same as the original function. If a language knows that a function or other global can only be overridden by an equivalent global, it can give it the weak_odr linkage type, and the optimizers will understand that it is alright to make deductions based on the function body. The code generators on the other hand map weak and weak_odr linkage to the same thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66339 91177308-0d34-0410-b5e6-96231b3b80d8		2009-03-07 15:45:40 +00:00
..
ADT	Give sentinel traits the right to determine the policy where the sentinel is kept.	2009-03-04 20:36:44 +00:00
Analysis
Assembly	simplify handling "don't print top level name" processing, so that we get	2009-03-01 01:16:21 +00:00
Bitcode
CodeGen	Add default constructor to SDNode to make gcc 3.4.6 happy.	2009-03-06 18:17:45 +00:00
CompilerDriver	Move code from Main.cpp to the include dir.	2009-03-02 09:03:02 +00:00
Config	Regenerate.	2009-03-05 08:20:44 +00:00
Debugger
ExecutionEngine
Support	Add IRBuilder::CreateConstGEP{1, 2}_{32, 64}.	2009-03-06 22:26:07 +00:00
System	Add a new 'AddSignalHandler' function to Signals.h that allows	2009-03-04 21:21:36 +00:00
Target	Fix a bunch of Doxygen syntax issues. Escape special characters,	2009-03-03 02:55:14 +00:00
Transforms	Add "check/remove dbg var" helper routines.	2009-03-06 00:19:37 +00:00
AbstractTypeUser.h
Argument.h
Attributes.h
AutoUpgrade.h
BasicBlock.h	simplify the way how traits get hold of the symbol table	2009-03-07 12:33:24 +00:00
CallGraphSCCPass.h
CallingConv.h
CMakeLists.txt
Constant.h
Constants.h	Fix a bunch of Doxygen syntax issues. Escape special characters,	2009-03-03 02:55:14 +00:00
DerivedTypes.h
Function.h	further simplifications arising from peruse of the more declarative interface	2009-03-07 10:49:57 +00:00
GlobalAlias.h
GlobalValue.h	Introduce new linkage types linkonce_odr, weak_odr, common_odr	2009-03-07 15:45:40 +00:00
GlobalVariable.h
InlineAsm.h
InstrTypes.h
Instruction.def
Instruction.h
Instructions.h
IntrinsicInst.h
Intrinsics.h
Intrinsics.td	Add some cautionary comments.	2009-03-04 21:53:29 +00:00
IntrinsicsAlpha.td
IntrinsicsARM.td
IntrinsicsCellSPU.td
IntrinsicsPowerPC.td
IntrinsicsX86.td
IntrinsicsXCore.td
LinkAllPasses.h
LinkAllVMCore.h
Linker.h
Module.h	simplify the way how traits get hold of the symbol table	2009-03-07 12:33:24 +00:00
ModuleProvider.h
OperandTraits.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassManagers.h	some nits noticed by Duncan	2009-03-06 17:05:04 +00:00
PassSupport.h	remove a deprecated interface that was pretty useless	2009-03-02 12:42:07 +00:00
SymbolTableListTraits.h	simplify the way how traits get hold of the symbol table	2009-03-07 12:33:24 +00:00
Type.h	delete a bunch of duplicated type printing logic, using the type printing	2009-02-28 23:01:57 +00:00
TypeSymbolTable.h
Use.h
User.h
Value.h
ValueSymbolTable.h