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2160b34eb1
Summary: When we import an alias, we do so by making a clone of the aliasee. Just as this clone uses the original alias name and linkage, it should also use the same visibility (not the aliasee's visibility). Otherwise, linker behavior is affected (e.g. if the aliasee was hidden, but the alias is not, the resulting imported clone should not be hidden, otherwise the linker will make the final symbol hidden which is incorrect). Reviewers: wmi Subscribers: mehdi_amini, inglorion, eraman, steven_wu, dexonsmith, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D62535 llvm-svn: 361989
166 lines
9.0 KiB
LLVM
166 lines
9.0 KiB
LLVM
; RUN: opt -module-summary %s -o %t1.bc
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; RUN: opt -module-summary %p/Inputs/alias_import.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=thinlink -o %t.index.bc %t1.bc %t2.bc
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; RUN: llvm-lto -thinlto-action=promote -thinlto-index %t.index.bc %t2.bc -o - | llvm-dis -o - | FileCheck -allow-deprecated-dag-overlap %s --check-prefix=PROMOTE
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; RUN: llvm-lto -thinlto-action=import -thinlto-index %t.index.bc %t1.bc -o - | llvm-dis -o - | FileCheck -allow-deprecated-dag-overlap %s --check-prefix=IMPORT
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; Alias can't point to "available_externally", so they are implemented by
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; importing the alias as an available_externally definition copied from the
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; aliasee's body.
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; PROMOTE-DAG: @globalfuncAlias = alias void (...), bitcast (void ()* @globalfunc to void (...)*)
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; PROMOTE-DAG: @globalfuncWeakAlias = weak alias void (...), bitcast (void ()* @globalfunc to void (...)*)
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; PROMOTE-DAG: @globalfuncLinkonceAlias = weak alias void (...), bitcast (void ()* @globalfunc to void (...)*)
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; PROMOTE-DAG: @globalfuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @globalfunc to void (...)*)
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; PROMOTE-DAG: @globalfuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @globalfunc to void (...)*)
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; PROMOTE-DAG: @internalfuncAlias = alias void (...), bitcast (void ()* @internalfunc to void (...)*)
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; PROMOTE-DAG: @internalfuncWeakAlias = weak alias void (...), bitcast (void ()* @internalfunc to void (...)*)
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; PROMOTE-DAG: @internalfuncLinkonceAlias = weak alias void (...), bitcast (void ()* @internalfunc to void (...)*)
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; PROMOTE-DAG: @internalfuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @internalfunc to void (...)*)
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; PROMOTE-DAG: @internalfuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @internalfunc to void (...)*)
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; PROMOTE-DAG: @linkoncefuncAlias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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; PROMOTE-DAG: @linkoncefuncWeakAlias = weak alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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; PROMOTE-DAG: @linkoncefuncLinkonceAlias = weak alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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; PROMOTE-DAG: @linkoncefuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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; PROMOTE-DAG: @linkoncefuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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; PROMOTE-DAG: @weakfuncAlias = alias void (...), bitcast (void ()* @weakfunc to void (...)*)
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; PROMOTE-DAG: @weakfuncWeakAlias = weak alias void (...), bitcast (void ()* @weakfunc to void (...)*)
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; PROMOTE-DAG: @weakfuncLinkonceAlias = weak alias void (...), bitcast (void ()* @weakfunc to void (...)*)
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; PROMOTE-DAG: @weakfuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @weakfunc to void (...)*)
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; PROMOTE-DAG: @weakfuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @weakfunc to void (...)*)
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; PROMOTE-DAG: @weakODRfuncAlias = alias void (...), bitcast (void ()* @weakODRfunc to void (...)*)
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; PROMOTE-DAG: @weakODRfuncWeakAlias = weak alias void (...), bitcast (void ()* @weakODRfunc to void (...)*)
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; PROMOTE-DAG: @weakODRfuncLinkonceAlias = weak alias void (...), bitcast (void ()* @weakODRfunc to void (...)*)
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; PROMOTE-DAG: @weakODRfuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @weakODRfunc to void (...)*)
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; PROMOTE-DAG: @weakODRfuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @weakODRfunc to void (...)*)
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; PROMOTE-DAG: @linkonceODRfuncAlias = alias void (...), bitcast (void ()* @linkonceODRfunc to void (...)*)
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; PROMOTE-DAG: @linkonceODRfuncWeakAlias = weak alias void (...), bitcast (void ()* @linkonceODRfunc to void (...)*)
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; PROMOTE-DAG: @linkonceODRfuncWeakODRAlias = weak_odr alias void (...), bitcast (void ()* @linkonceODRfunc to void (...)*)
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; PROMOTE-DAG: @linkonceODRfuncLinkonceAlias = weak alias void (...), bitcast (void ()* @linkonceODRfunc to void (...)*)
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; PROMOTE-DAG: @linkonceODRfuncLinkonceODRAlias = weak_odr alias void (...), bitcast (void ()* @linkonceODRfunc to void (...)*)
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; PROMOTE-DAG: define hidden void @globalfunc()
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; PROMOTE-DAG: define internal void @internalfunc()
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; PROMOTE-DAG: define weak_odr void @linkonceODRfunc()
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; PROMOTE-DAG: define weak_odr void @weakODRfunc()
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; PROMOTE-DAG: define weak void @linkoncefunc()
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; PROMOTE-DAG: define weak void @weakfunc()
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; On the import side now, verify that aliases are imported unless they
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; are preemptible (non-ODR weak/linkonce).
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; IMPORT-DAG: declare void @linkonceODRfuncWeakAlias
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; IMPORT-DAG: declare void @linkonceODRfuncLinkonceAlias
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; IMPORT-DAG: define available_externally void @linkonceODRfuncAlias
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; IMPORT-DAG: define available_externally void @linkonceODRfuncWeakODRAlias
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; IMPORT-DAG: define available_externally void @linkonceODRfuncLinkonceODRAlias
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; IMPORT-DAG: define available_externally dso_local void @globalfuncAlias()
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; IMPORT-DAG: declare void @globalfuncWeakAlias()
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; IMPORT-DAG: declare void @globalfuncLinkonceAlias()
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; IMPORT-DAG: define available_externally dso_local void @globalfuncWeakODRAlias()
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; IMPORT-DAG: define available_externally dso_local void @globalfuncLinkonceODRAlias()
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; IMPORT-DAG: define available_externally dso_local void @internalfuncAlias()
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; IMPORT-DAG: declare void @internalfuncWeakAlias()
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; IMPORT-DAG: declare void @internalfuncLinkonceAlias()
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; IMPORT-DAG: define available_externally dso_local void @internalfuncWeakODRAlias()
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; IMPORT-DAG: define available_externally dso_local void @internalfuncLinkonceODRAlias()
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; IMPORT-DAG: define available_externally void @weakODRfuncAlias()
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; IMPORT-DAG: declare void @weakODRfuncWeakAlias()
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; IMPORT-DAG: declare void @weakODRfuncLinkonceAlias()
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; IMPORT-DAG: define available_externally void @weakODRfuncWeakODRAlias()
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; IMPORT-DAG: define available_externally void @weakODRfuncLinkonceODRAlias()
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; IMPORT-DAG: define available_externally void @linkoncefuncAlias()
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; IMPORT-DAG: declare void @linkoncefuncWeakAlias()
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; IMPORT-DAG: declare void @linkoncefuncLinkonceAlias()
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; IMPORT-DAG: define available_externally void @linkoncefuncWeakODRAlias()
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; IMPORT-DAG: define available_externally void @linkoncefuncLinkonceODRAlias()
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; IMPORT-DAG: define available_externally void @weakfuncAlias()
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; IMPORT-DAG: declare void @weakfuncWeakAlias()
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; IMPORT-DAG: declare void @weakfuncLinkonceAlias()
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; IMPORT-DAG: define available_externally void @weakfuncWeakODRAlias()
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; IMPORT-DAG: define available_externally void @weakfuncLinkonceODRAlias()
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; IMPORT-DAG: define available_externally void @linkonceODRfuncAlias()
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; IMPORT-DAG: declare void @linkonceODRfuncWeakAlias()
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; IMPORT-DAG: define available_externally void @linkonceODRfuncWeakODRAlias()
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; IMPORT-DAG: declare void @linkonceODRfuncLinkonceAlias()
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; IMPORT-DAG: define available_externally void @linkonceODRfuncLinkonceODRAlias()
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @main() #0 {
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entry:
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call void @globalfuncAlias()
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call void @globalfuncWeakAlias()
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call void @globalfuncLinkonceAlias()
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call void @globalfuncWeakODRAlias()
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call void @globalfuncLinkonceODRAlias()
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call void @internalfuncAlias()
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call void @internalfuncWeakAlias()
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call void @internalfuncLinkonceAlias()
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call void @internalfuncWeakODRAlias()
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call void @internalfuncLinkonceODRAlias()
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call void @linkonceODRfuncAlias()
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call void @linkonceODRfuncWeakAlias()
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call void @linkonceODRfuncLinkonceAlias()
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call void @linkonceODRfuncWeakODRAlias()
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call void @linkonceODRfuncLinkonceODRAlias()
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call void @weakODRfuncAlias()
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call void @weakODRfuncWeakAlias()
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call void @weakODRfuncLinkonceAlias()
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call void @weakODRfuncWeakODRAlias()
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call void @weakODRfuncLinkonceODRAlias()
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call void @linkoncefuncAlias()
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call void @linkoncefuncWeakAlias()
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call void @linkoncefuncLinkonceAlias()
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call void @linkoncefuncWeakODRAlias()
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call void @linkoncefuncLinkonceODRAlias()
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call void @weakfuncAlias()
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call void @weakfuncWeakAlias()
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call void @weakfuncLinkonceAlias()
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call void @weakfuncWeakODRAlias()
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call void @weakfuncLinkonceODRAlias()
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ret i32 0
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}
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declare void @globalfuncAlias()
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declare void @globalfuncWeakAlias()
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declare void @globalfuncLinkonceAlias()
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declare void @globalfuncWeakODRAlias()
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declare void @globalfuncLinkonceODRAlias()
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declare void @internalfuncAlias()
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declare void @internalfuncWeakAlias()
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declare void @internalfuncLinkonceAlias()
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declare void @internalfuncWeakODRAlias()
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declare void @internalfuncLinkonceODRAlias()
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declare void @linkonceODRfuncAlias()
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declare void @linkonceODRfuncWeakAlias()
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declare void @linkonceODRfuncLinkonceAlias()
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declare void @linkonceODRfuncWeakODRAlias()
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declare void @linkonceODRfuncLinkonceODRAlias()
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declare void @weakODRfuncAlias()
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declare void @weakODRfuncWeakAlias()
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declare void @weakODRfuncLinkonceAlias()
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declare void @weakODRfuncWeakODRAlias()
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declare void @weakODRfuncLinkonceODRAlias()
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declare void @linkoncefuncAlias()
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declare void @linkoncefuncWeakAlias()
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declare void @linkoncefuncLinkonceAlias()
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declare void @linkoncefuncWeakODRAlias()
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declare void @linkoncefuncLinkonceODRAlias()
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declare void @weakfuncAlias()
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declare void @weakfuncWeakAlias()
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declare void @weakfuncLinkonceAlias()
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declare void @weakfuncWeakODRAlias()
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declare void @weakfuncLinkonceODRAlias()
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