+; First ensure that the ThinLTO handling in llvm-link and llvm-lto handles
+; bitcode without function summary sections gracefully.
+; RUN: llvm-as %s -o %t.bc
+; RUN: llvm-as %p/Inputs/funcimport.ll -o %t2.bc
+; RUN: llvm-link %t.bc -functionindex=%t.bc -S
+; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
+
; Do setup work for all below tests: generate bitcode and combined index
; RUN: llvm-as -function-summary %s -o %t.bc
; RUN: llvm-as -function-summary %p/Inputs/funcimport.ll -o %t2.bc
; lazily linked and never referenced/materialized.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB1
; IMPORTGLOB1-DAG: define available_externally void @globalfunc1
-; IMPORTGLOB1-DAG: declare void @globalfunc2
-; IMPORTGLOB1-DAG: declare extern_weak void @weakalias
+; IMPORTGLOB1-DAG: declare void @weakalias
; IMPORTGLOB1-DAG: declare void @analias
-; IMPORTGLOB1-DAG: declare void @linkoncealias
+; IMPORTGLOB1-NOT: @linkoncealias
; IMPORTGLOB1-NOT: @linkoncefunc
+; IMPORTGLOB1-NOT: declare void @globalfunc2
; Ensure that weak alias to a non-imported function is correctly
; turned into a declaration, but that strong alias to an imported function
; is imported as alias.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB2
-; IMPORTGLOB2-DAG: @analias = alias void (...), bitcast (void ()* @globalfunc2
-; IMPORTGLOB2-DAG: declare void @globalfunc1
+; IMPORTGLOB2-DAG: declare void @analias
; IMPORTGLOB2-DAG: define available_externally void @globalfunc2
-; IMPORTGLOB2-DAG: declare extern_weak void @weakalias
+; IMPORTGLOB2-DAG: declare void @weakalias
+; IMPORTGLOB2-NOT: declare void @globalfunc1
; Ensure that strong alias imported in second pass of importing ends up
; as an alias.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc1:%t.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB3
-; IMPORTGLOB3-DAG: @analias = alias void (...), bitcast (void ()* @globalfunc2
+; IMPORTGLOB3-DAG: declare void @analias
; IMPORTGLOB3-DAG: define available_externally void @globalfunc1
; IMPORTGLOB3-DAG: define available_externally void @globalfunc2
-; IMPORTGLOB3-DAG: declare extern_weak void @weakalias
+; IMPORTGLOB3-DAG: declare void @weakalias
; Ensure that strong alias imported in first pass of importing ends up
; as an alias, and that seeing the alias definition during a second inlining
; pass is handled correctly.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=globalfunc2:%t.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB4
-; IMPORTGLOB4-DAG: @analias = alias void (...), bitcast (void ()* @globalfunc2
+; IMPORTGLOB4-DAG: declare void @analias
; IMPORTGLOB4-DAG: define available_externally void @globalfunc2
; IMPORTGLOB4-DAG: define available_externally void @globalfunc1
-; IMPORTGLOB4-DAG: declare extern_weak void @weakalias
+; IMPORTGLOB4-DAG: declare void @weakalias
+
+; An alias to an imported function is imported as alias if the function is not
+; available_externally.
+; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=linkoncefunc:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB5
+; IMPORTGLOB5-DAG: linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
+; IMPORTGLOB5-DAG: define linkonce_odr void @linkoncefunc()
; Ensure that imported static variable and function references are correctly
; promoted and renamed (including static constant variable).
; reference should turned into an external_weak declaration.
; RUN: llvm-link %t2.bc -functionindex=%t3.thinlto.bc -import=callweakfunc:%t.bc -import=weakfunc:%t.bc -S 2>&1 | FileCheck %s --check-prefix=IMPORTWEAKFUNC
; IMPORTWEAKFUNC-DAG: Ignoring import request for weak-any function weakfunc
-; IMPORTWEAKFUNC-DAG: @weakvar = extern_weak global i32, align 4
; IMPORTWEAKFUNC-DAG: declare extern_weak void @weakfunc
; IMPORTWEAKFUNC-DAG: define available_externally void @callweakfunc
+; IMPORTWEAKFUNC-NOT: @weakvar = extern_weak global i32, align 4
@globalvar = global i32 1, align 4
@staticvar = internal global i32 1, align 4