Rafael Espindola f165cf7ce8 Prevent alias from pointing to weak aliases. ... This adds back r204781. Original message: Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204934 91177308-0d34-0410-b5e6-96231b3b80d8		2014-03-27 15:26:56 +00:00
..
AsmWriter.cpp	Make some assertions on constant expressions static.	2014-03-15 18:47:07 +00:00
AsmWriter.h	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
AttributeImpl.h	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
Attributes.cpp	Revert "[C++11] Replace LLVM atomics with std::atomic."	2014-03-03 18:02:34 +00:00
AutoUpgrade.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
BasicBlock.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
CMakeLists.txt	[Modules] Move the ConstantRange class into the IR library. This is	2014-03-04 12:24:34 +00:00
ConstantFold.cpp	[Modules] Move GetElementPtrTypeIterator into the IR library. As its	2014-03-04 10:40:04 +00:00
ConstantFold.h
ConstantRange.cpp	[Modules] Move the ConstantRange class into the IR library. This is	2014-03-04 12:24:34 +00:00
Constants.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
ConstantsContext.h	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
Core.cpp	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
DataLayout.cpp	[C++11] Modernize the IR library a bit.	2014-03-10 15:03:06 +00:00
DebugInfo.cpp	remove a bunch of unused private methods	2014-03-23 17:09:26 +00:00
DebugLoc.cpp	[Layering] Move DebugInfo.h into the IR library where its implementation	2014-03-06 00:46:21 +00:00
DiagnosticInfo.cpp	Use DiagnosticInfo facility.	2014-03-14 21:58:59 +00:00
DiagnosticPrinter.cpp	Report a warning when dropping outdated debug info metadata.	2014-01-16 01:51:12 +00:00
DIBuilder.cpp	Switch the type field in DIVariable and DIGlobalVariable over to DITypeRefs.	2014-03-18 02:34:58 +00:00
Dominators.cpp	[Modules] Move CFG.h to the IR library as it defines graph traits over	2014-03-04 11:45:46 +00:00
Function.cpp	Revert r203488 and r203520.	2014-03-12 18:09:37 +00:00
GCOV.cpp	llvm-cov: Handle functions with no line number	2014-03-26 22:03:06 +00:00
Globals.cpp	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
GVMaterializer.cpp	[Layering] Move GVMaterializer.h into the IR library where its	2014-03-06 03:50:29 +00:00
InlineAsm.cpp	Remove copy ctors that did the same thing as the default one.	2014-03-11 11:32:49 +00:00
Instruction.cpp	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
Instructions.cpp	IR: add a second ordering operand to cmpxhg for failure	2014-03-11 10:48:52 +00:00
IntrinsicInst.cpp	Remove spurious emacs major mode marker, these should only go on .h files.	2014-02-26 03:10:45 +00:00
IRBuilder.cpp
IRPrintingPasses.cpp	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
LeakDetector.cpp	[Modules] Move the LeakDetector header into the IR library where the	2014-03-04 12:46:06 +00:00
LeaksContext.h	Revert "Give internal classes hidden visibility."	2013-09-11 18:05:11 +00:00
LegacyPassManager.cpp	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
LLVMBuild.txt
LLVMContext.cpp	Add 'remark' diagnostic type in LLVM	2014-02-28 09:08:45 +00:00
LLVMContextImpl.cpp	Add warning capabilities in LLVM.	2013-12-17 17:47:22 +00:00
LLVMContextImpl.h	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
Makefile	Actually update the CMake and Makefile builds correctly, and update the	2013-01-02 12:09:16 +00:00
Mangler.cpp	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
Metadata.cpp	[C++11] Modernize the IR library a bit.	2014-03-10 15:03:06 +00:00
Module.cpp	Module: Don't rename in getOrInsertFunction()	2014-03-10 23:42:28 +00:00
Pass.cpp	[C++11] Add 'override' keyword to IR library.	2014-03-05 06:35:38 +00:00
PassManager.cpp	Fix comment (PR19188)	2014-03-19 18:41:38 +00:00
PassRegistry.cpp	[opt][PassInfo] Allow opt to run passes that need target machine.	2014-01-16 21:44:34 +00:00
SymbolTableListTraitsImpl.h
Type.cpp	Mark some Type and EVT methods as LLVM_READONLY.	2013-12-28 16:17:26 +00:00
TypeFinder.cpp	TypeFinder: prefer iterative algorithm to keep stack usage low.	2013-10-16 04:10:06 +00:00
Use.cpp	[cleanup] Add a getOperandNo method to the Use class and implement it	2014-03-04 09:19:43 +00:00
User.cpp	Disable Visual C++ warning 4722 about aborting a destructor,	2014-03-25 08:42:49 +00:00
Value.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
ValueSymbolTable.cpp
ValueTypes.cpp	Add v4f16 to supported value types.	2013-10-03 03:29:21 +00:00
Verifier.cpp	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00