David Blaikie 2f0cc477ab ThinLTO: Don't import aliases of any kind (even linkonce_odr) ... Summary: Until a more advanced version of importing can be implemented for aliases (one that imports an alias as an available_externally definition of the aliasee), skip the narrow subset of cases that was possible but came at a cost: aliases of linkonce_odr functions could be imported because the linkonce_odr function could be safely duplicated from the source module. This came/comes at the cost of not being able to 'home' imported linkonce functions (they had to be emitted linkonce_odr in all the destination modules (even if they weren't used by an alias) rather than as available_externally - causing extra object size). Tangentially, this also was the only reason ThinLTO would emit multiple CUs in to the resulting DWARF - which happens to be a problem for Fission (there's a fix for this in GDB but not released yet, etc). (actually it's not the only reason - but I'm sending a patch to fix the other reason shortly) There's no reason to believe this particularly narrow alias importing was especially/meaningfully important, only that it was /possible/ to implement in this way. When a more general solution is done, it should still satisfy the DWARF concerns above, since the import will still be available_externally, and thus not create extra CUs. Since now all aliases are treated the same, I removed/simplified some test cases since they were testing corner cases where there are no longer any corners. Reviewers: tejohnson, mehdi_amini Differential Revision: https://reviews.llvm.org/D35875 llvm-svn: 309278		2017-07-27 15:09:06 +00:00
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Inputs	[Linker] Add directives to support mixing ARM/Thumb module-level inline asm.	2017-07-12 11:52:28 +00:00
2002-07-17-GlobalFail.ll	…
2002-07-17-LinkTest2.ll	…
2002-08-20-ConstantExpr.ll	…
2003-01-30-LinkerRename.ll	…
2003-01-30-LinkerTypeRename.ll	…
2003-04-23-LinkOnceLost.ll	…
2003-04-26-NullPtrLinkProblem.ll	…
2003-05-15-TypeProblem.ll	…
2003-05-31-LinkerRename.ll	…
2003-06-02-TypeResolveProblem.ll	…
2003-06-02-TypeResolveProblem2.ll	…
2003-08-20-OpaqueTypeResolve.ll	…
2003-08-23-GlobalVarLinking.ll	…
2003-08-23-RecursiveOpaqueTypeResolve.ll	…
2003-08-24-InheritPtrSize.ll	…
2003-08-28-TypeResolvesGlobal.ll	…
2003-08-28-TypeResolvesGlobal2.ll	…
2003-08-28-TypeResolvesGlobal3.ll	Make "@name =" mandatory for globals in .ll files.	2016-05-10 18:22:45 +00:00
2003-10-27-LinkOncePromote.ll	…
2003-11-18-TypeResolution.ll	…
2004-02-17-WeakStrongLinkage.ll	…
2004-05-07-TypeResolution1.ll	…
2004-05-07-TypeResolution2.ll	…
2004-12-03-DisagreeingType.ll	…
2005-02-12-ConstantGlobals-2.ll	…
2005-02-12-ConstantGlobals.ll	…
2005-12-06-AppendingZeroLengthArrays.ll	…
2006-01-19-ConstantPacked.ll	…
2008-03-05-AliasReference.ll	…
2008-03-05-AliasReference2.ll	…
2008-03-07-DroppedSection_a.ll	…
2008-03-07-DroppedSection_b.ll	…
2008-06-13-LinkOnceRedefinition.ll	…
2008-06-26-AddressSpace.ll	…
2008-07-06-AliasFnDecl.ll	…
2008-07-06-AliasFnDecl2.ll	…
2008-07-06-AliasWeakDest.ll	…
2008-07-06-AliasWeakDest2.ll	…
2009-09-03-mdnode.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
2009-09-03-mdnode2.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
2011-08-04-DebugLoc.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
2011-08-04-DebugLoc2.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
2011-08-04-Metadata.ll	Renumber testcase metadata nodes after r290153.	2016-12-22 00:45:21 +00:00
2011-08-04-Metadata2.ll	Renumber testcase metadata nodes after r290153.	2016-12-22 00:45:21 +00:00
2011-08-18-unique-class-type.ll	Remove line and file from DINamespace.	2017-04-28 22:25:46 +00:00
2011-08-18-unique-class-type2.ll	Remove line and file from DINamespace.	2017-04-28 22:25:46 +00:00
2011-08-18-unique-debug-type.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
2011-08-18-unique-debug-type2.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
AppendingLinkage.ll	…
AppendingLinkage2.ll	…
ConstantGlobals.ll	…
DbgDeclare.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
DbgDeclare2.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
LinkOnce.ll	…
PR8300.ll	…
alias-2.ll	…
alias-3.ll	IRLinker: fix double scheduling of mapping a global value because of an alias	2016-05-25 21:00:44 +00:00
alias.ll	…
alignment.ll	…
apple-version.ll	…
available_externally_a.ll	Linker: Move special casing for available_externally in IRMover to clients. NFCI.	2017-02-02 05:12:15 +00:00
available_externally_b.ll	…
available_externally_over_decl.ll	…
basiclink.ll	…
broken.ll	Don't verify inputs to the Linker if ODR merging.	2016-06-29 18:31:48 +00:00
comdat-rm-dst.ll	Drop comdats from the dst module if they are not selected.	2016-03-22 21:35:47 +00:00
comdat.ll	…
comdat2.ll	…
comdat4.ll	…
comdat5.ll	…
comdat6.ll	…
comdat7.ll	…
comdat8.ll	…
comdat9.ll	Fix lazy linking of comdat members.	2016-03-24 00:06:03 +00:00
comdat10.ll	…
comdat11.ll	…
comdat12.ll	…
comdat13.ll	…
comdat14.ll	ModuleLinker: Do not import linkonce/weak as "external_weak"	2016-04-19 16:11:05 +00:00
comdat15.ll	…
comdat16.ll	Fix logic for which symbols to keep with comdats.	2016-03-23 21:16:33 +00:00
comdat_group.ll	…
constructor-comdat.ll	Fix logic for which symbols to keep with comdats.	2016-03-23 21:16:33 +00:00
ctors.ll	…
ctors2.ll	…
ctors3.ll	…
ctors4.ll	…
ctors5.ll	…
datalayout.ll	…
debug-info-global-var.ll	[IR] Remove the DIExpression field from DIGlobalVariable.	2016-12-20 02:09:43 +00:00
debug-info-version-a.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
debug-info-version-b.ll	…
dicompositetype-unique.ll	IR: Enable debug info type ODR uniquing for forward decls	2016-04-19 18:00:19 +00:00
distinct-cycles.ll	…
distinct.ll	…
dllstorage-a.ll	…
dllstorage-b.ll	…
drop-debug.ll	…
func-attrs-a.ll	…
func-attrs-b.ll	…
funcimport.ll	ThinLTO: Don't import aliases of any kind (even linkonce_odr)	2017-07-27 15:09:06 +00:00
funcimport2.ll	ThinLTO/ModuleLinker: add a flag to not always pull-in linkonce when performing importing	2016-04-21 01:59:39 +00:00
funcimport_appending_global.ll	Move summary creation out of llvm-as into opt	2016-04-12 21:35:18 +00:00
funcimport_comdat.ll	Move summary creation out of llvm-as into opt	2016-04-12 21:35:18 +00:00
global_ctors.ll	…
ident.ll	…
inlineasm.ll	…
internalize-lazy.ll	…
link-arm-and-thumb-module-inline-asm.ll	[Linker] Add directives to support mixing ARM/Thumb module-level inline asm.	2017-07-12 11:52:28 +00:00
link-arm-and-thumb.ll	[Linker] Remove llc usage from link-arm-and-thumb.ll test case.	2017-06-07 09:59:22 +00:00
link-flags.ll	[Linker] Provide callback for internalization	2017-03-13 18:08:11 +00:00
link-global-to-func.ll	…
link-type-names.ll	…
linkage.ll	…
linkage2.ll	…
linkmdnode.ll	…
linkmdnode2.ll	…
linknamedmdnode.ll	…
linknamedmdnode2.ll	…
lto-attributes.ll	…
mdlocation.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
metadata-a.ll	…
metadata-attach.ll	Linker: Remove unnecessary call to copyMetadata in IRLinker::linkGlobalVariable.	2016-11-14 23:18:38 +00:00
metadata-b.ll	…
metadata-function.ll	…
metadata-global.ll	Remap metadata attached to global variables.	2017-05-04 23:29:39 +00:00
metadata-with-global-value-operand.ll	IR: Drop uniquing when an MDNode Value operand is deleted	2016-08-03 18:19:43 +00:00
module-flags-1-a.ll	…
module-flags-1-b.ll	…
module-flags-2-a.ll	…
module-flags-2-b.ll	…
module-flags-3-a.ll	…
module-flags-3-b.ll	…
module-flags-4-a.ll	Linker: teach the IR mover to return llvm::Error.	2016-05-27 05:21:35 +00:00
module-flags-4-b.ll	Linker: teach the IR mover to return llvm::Error.	2016-05-27 05:21:35 +00:00
module-flags-5-a.ll	…
module-flags-5-b.ll	…
module-flags-6-a.ll	…
module-flags-6-b.ll	…
module-flags-7-a.ll	…
module-flags-7-b.ll	…
module-flags-8-a.ll	…
module-flags-8-b.ll	…
module-flags-dont-change-others.ll	…
module-flags-pic-1-a.ll	…
module-flags-pic-2-a.ll	Support for taking the max of module flags when linking, use for PIE/PIC	2017-05-23 00:08:00 +00:00
multiple-merged-structs.ll	…
null_mapping_constant.ll	ValueMapper: fix assertion when null-mapping a constant for linking metadata	2016-05-28 17:26:03 +00:00
objectivec-class-property-flag-mismatch.ll	Fix autoupgrade logic for Objective-C class properties module flag	2016-09-16 00:38:18 +00:00
odr.ll	Renumber testcase metadata nodes after r290153.	2016-12-22 00:45:21 +00:00
only-needed-debug-metadata.ll	Renumber testcase metadata nodes after r290153.	2016-12-22 00:45:21 +00:00
only-needed-named-metadata.ll	…
only-needed-recurse.ll	Fix recursive -only-needed.	2016-04-21 14:56:33 +00:00
opaque.ll	…
override-different-linkage.ll	…
override-with-internal-linkage-2.ll	…
override-with-internal-linkage.ll	…
override.ll	…
partial-type-refinement-link.ll	…
partial-type-refinement.ll	…
pr21374.ll	…
pr21494.ll	…
pr22807.ll	…
pr26037.ll	Debug Info: Add a file: field to DIImportedEntity.	2017-07-19 00:09:54 +00:00
pr27044.ll	Fix another case where we were unconditionally linking linkonce GVs.	2016-03-24 15:23:01 +00:00
prologuedata.ll	…
redefinition.ll	…
replaced-function-matches-first-subprogram.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
subprogram-linkonce-weak.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
syncscopes.ll	Enhance synchscope representation	2017-07-11 22:23:00 +00:00
targettriple.ll	…
testlink.ll	…
thinlto_funcimport_debug.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
transitive-lazy-link.ll	…
type-unique-alias.ll	…
type-unique-dst-types.ll	…
type-unique-inheritance.ll	…
type-unique-name.ll	…
type-unique-odr-a.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-odr-b.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-opaque.ll	…
type-unique-simple-a.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-simple-b.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-simple2-a.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-simple2-b.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-simple2.ll	…
type-unique-src-type.ll	…
type-unique-type-array-a.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-type-array-b.ll	DebugInfo: Remove MDString-based type references	2016-04-23 21:08:00 +00:00
type-unique-unrelated.ll	…
unique-fwd-decl-a.ll	…
unique-fwd-decl-order.ll	…
uniqued-distinct-cycles.ll	…
unnamed-addr-err-a.ll	…
unnamed-addr-err-b.ll	…
unnamed-addr1-a.ll	…
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visibility.ll	…
weakextern.ll	…