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
..
2004-10-10-CastStoreOnce.ll
2005-06-15-LocalizeConstExprCrash.ll
2005-09-27-Crash.ll
2006-07-07-InlineAsmCrash.ll
2006-11-01-ShrinkGlobalPhiCrash.ll
2007-04-05-Crash.ll
2007-05-13-Crash.ll
2007-06-04-PackedStruct.ll
2007-11-09-GEP-GEP-Crash.ll
2008-01-03-Crash.ll
2008-01-13-OutOfRangeSROA.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2008-01-29-VolatileGlobal.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2008-04-26-SROA-Global-Align.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2008-07-17-addrspace.ll	Quote potential shell expansions found in tests	2013-10-28 23:37:45 +00:00
2008-12-16-HeapSRACrash-2.ll
2008-12-16-HeapSRACrash.ll
2009-01-13-phi-user.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
2009-02-15-BitcastAlias.ll	Reject alias to undefined symbols in the verifier.	2014-03-12 20:15:49 +00:00
2009-02-15-ResolveAlias.ll	Fixup to r186268 and r186269: don't append -LABEL to CHECK-NOT. No functionality change.	2013-07-14 02:10:57 +00:00
2009-03-05-dbg.ll	Debug Info Testing: update context from empty string to null.	2013-09-08 03:11:54 +00:00
2009-03-06-Anonymous.ll
2009-03-07-PromotePtrToBool.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
2009-06-01-RecursivePHI.ll
2009-11-16-BrokenPerformHeapAllocSRoA.ll	Teach globalopt to not nuke all stores to globals. Keep them around of they	2012-07-24 07:21:08 +00:00
2009-11-16-MallocSingleStoreToGlobalVar.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
2010-02-25-MallocPromote.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 02:33:22 +00:00
2010-02-26-MallocSROA.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 02:33:22 +00:00
2010-10-19-WeakOdr.ll
2011-04-09-EmptyGlobalCtors.ll
2012-05-11-blockaddress.ll	Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change.	2013-07-14 01:50:49 +00:00
alias-resolve.ll	Prevent alias from pointing to weak aliases.	2014-03-27 15:26:56 +00:00
alias-used-address-space.ll	Fix addrspacecast with metadata globals	2014-01-02 19:53:49 +00:00
alias-used-section.ll	GlobalOpt: Aliases don't have sections, don't copy them when replacing	2014-02-13 02:18:36 +00:00
alias-used.ll	s/compiler_used/compiler.used/.	2013-07-19 18:44:51 +00:00
array-elem-refs.ll	Fix a use-after-free error in GlobalOpt CleanupConstantGlobalUsers	2013-12-12 20:45:24 +00:00
atexit.ll	GlobalOpt: fix an issue where CXAAtExitFn points to a deleted function.	2013-05-14 21:52:44 +00:00
atomic.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
basictest.ll
blockaddress.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
cleanup-pointer-root-users.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
compiler-used.ll	Don't crash when llvm.compiler.used becomes empty.	2013-07-20 23:33:15 +00:00
constantexpr-dangle.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
constantfold-initializers.ll
crash-2.ll	Use a worklist to avoid a sneaky iterator invalidation.	2013-04-02 08:16:45 +00:00
crash.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 02:33:22 +00:00
ctor-list-opt-constexpr.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
ctor-list-opt-inbounds.ll
ctor-list-opt.ll
cxx-dtor.ll
deadfunction.ll
deadglobal-2.ll
deadglobal.ll	Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change.	2013-07-14 01:50:49 +00:00
externally-initialized-global-ctr.ll	Added missing newline to end of test case.	2013-02-05 19:39:44 +00:00
fastcc.ll	GlobalOpt: Apply fastcc to internal x86_thiscallcc functions	2014-02-26 19:57:30 +00:00
globalsra-partial.ll
globalsra-unknown-index.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
globalsra.ll
heap-sra-1.ll
heap-sra-2.ll
heap-sra-3.ll
heap-sra-4.ll
heap-sra-phi.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
integer-bool.ll	Revert r204076 for now - it caused significant regressions in a number of	2014-03-23 04:22:31 +00:00
invariant-nodatalayout.ll	Check that TD isn't NULL before dereferencing it down this path.	2013-07-25 02:55:14 +00:00
invariant.ll
invoke.ll
iterate.ll
load-store-global.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
malloc-promote-1.ll
malloc-promote-2.ll
malloc-promote-3.ll	Respect the 'nobuiltin' attribute when determining if a call is to a memory builtin.	2013-05-16 04:12:04 +00:00
memcpy.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
memset-null.ll	Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID	2012-12-30 01:28:40 +00:00
memset.ll	Delete unread globals through addrspacecast	2014-01-02 20:01:43 +00:00
metadata.ll	Revert r191834 until we measure the effect of this benchmarks and maybe find a better way to fix it	2013-10-07 19:03:24 +00:00
phi-select.ll
storepointer-compare.ll	Convert all tests using TCL-style quoting to use shell-style quoting.	2012-07-02 12:47:22 +00:00
storepointer.ll
tls.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00
trivialstore.ll
undef-init.ll
unnamed-addr.ll	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
zeroinitializer-gep-load.ll	Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.	2013-07-14 01:42:54 +00:00