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
..
ADT	When destroying a StringMap, just iterate over the map and destroy the contained elements. Don't reset them back to 0 as their values aren't needed any more. This results in ~StringMap() being mostly empty for POD types in BumpPtrAllocators	2014-03-19 00:23:30 +00:00
Analysis	blockfreq: Implement Pass::releaseMemory()	2014-03-25 18:01:38 +00:00
AsmParser
Bitcode	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
CodeGen	Simplify PBQP graph removeAdjEdgeId implementation.	2014-03-26 21:21:53 +00:00
Config	static link polly into tools	2014-03-14 04:04:14 +00:00
DebugInfo	DebugInfo: Support debug_loc under fission	2014-03-25 01:44:02 +00:00
ExecutionEngine	[MCJIT] Check if there have been errors during RuntimeDyld execution.	2014-03-26 18:19:27 +00:00
IR	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
IRReader
LineEditor	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
Linker	[Layering] Sink Linker.h into a Linker subdirectory to make it	2014-03-06 03:42:23 +00:00
LTO	Replace OwningPtr<T> with std::unique_ptr<T>.	2014-03-06 05:51:42 +00:00
MC	Add missing #include <cassert> to MCSymbolizer.h.	2014-03-27 02:58:32 +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	[C++11] Add 'override' keyword to virtual methods that override their base class.	2014-03-05 07:52:44 +00:00
ProfileData	InstrProf: Check pointer size in raw profile	2014-03-23 03:38:12 +00:00
Support	[cleanup] Run clang-format over these routines to remove formatting	2014-03-27 09:56:23 +00:00
TableGen
Target	Change @llvm.clear_cache default to call rt-lib	2014-03-26 14:01:32 +00:00
Transforms	Remove LowerInvoke's obsolete "-enable-correct-eh-support" option	2014-03-20 19:54:47 +00:00
CMakeLists.txt
InitializePasses.h
LinkAllIR.h
LinkAllPasses.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassRegistry.h
PassSupport.h