Rafael Espindola 5c8926deed 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. llvm-svn: 204934		2014-03-27 15:26:56 +00:00
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Analysis	PR15967 Fix in basicaa for faulty returning no alias.	2014-03-26 21:30:19 +00:00
AsmParser	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
Bitcode	All new elements except the last one initialized to NULL. Ideally, once parsing is complete, all elements should be non-NULL.	2014-03-27 12:08:23 +00:00
CodeGen	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
DebugInfo	DebugInfo: Support debug_loc under fission	2014-03-25 01:44:02 +00:00
ExecutionEngine	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
IR	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
IRReader	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
LineEditor	[CMake] Use LINK_LIBS instead of target_link_libraries().	2014-02-26 06:41:29 +00:00
Linker	[Layering] Sink Linker.h into a Linker subdirectory to make it	2014-03-06 03:42:23 +00:00
LTO	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
MC	Move MCSymbolizer's constructor into header. It's trivial - there's no need for	2014-03-27 02:42:52 +00:00
Object	[RuntimeDyld] Allow processRelocationRef to process more than one relocation entry at a time.	2014-03-21 07:26:41 +00:00
Option	Avoid buffer copies when a Twine already is a StringRef.	2013-12-03 18:18:28 +00:00
ProfileData	InstrProf: Silence spurious warnings in GCC 4.8	2014-03-24 00:47:18 +00:00
Support	Disable Visual C++ warning 4722 about aborting a destructor,	2014-03-25 08:42:49 +00:00
TableGen	remove a bunch of unused private methods	2014-03-23 17:09:26 +00:00
Target	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
Transforms	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
CMakeLists.txt	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00
LLVMBuild.txt	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00
Makefile	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00