1; Do setup work for all below tests: generate bitcode and combined index
2; RUN: llvm-as -function-summary %s -o %t.bc
3; RUN: llvm-as -function-summary %p/Inputs/funcimport.ll -o %t2.bc
4; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
5
6; Do the import now
7; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF
8
9; Test import with smaller instruction limit
10; RUN: opt -function-import -summary-file %t3.thinlto.bc %s -import-instr-limit=5 -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIM5
11; INSTLIM5-NOT: @staticfunc.llvm.2
12
13define i32 @main() #0 {
14entry:
15  call void (...) @weakalias()
16  call void (...) @analias()
17  call void (...) @linkoncealias()
18  %call = call i32 (...) @referencestatics()
19  %call1 = call i32 (...) @referenceglobals()
20  %call2 = call i32 (...) @referencecommon()
21  call void (...) @setfuncptr()
22  call void (...) @callfuncptr()
23  call void (...) @weakfunc()
24  ret i32 0
25}
26
27; Won't import weak alias
28; CHECK-DAG: declare void @weakalias
29declare void @weakalias(...) #1
30
31; Cannot create an alias to available_externally
32; CHECK-DAG: declare void @analias
33declare void @analias(...) #1
34
35; Aliases import the aliasee function
36declare void @linkoncealias(...) #1
37; CHECK-DAG: define linkonce_odr void @linkoncefunc()
38; CHECK-DAG: @linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*
39
40; INSTLIMDEF-DAG: define available_externally i32 @referencestatics(i32 %i)
41; INSTLIM5-DAG: declare i32 @referencestatics(...)
42declare i32 @referencestatics(...) #1
43
44; The import of referencestatics will expose call to staticfunc that
45; should in turn be imported as a promoted/renamed and hidden function.
46; Ensure that the call is to the properly-renamed function.
47; INSTLIMDEF-DAG: %call = call i32 @staticfunc.llvm.2()
48; INSTLIMDEF-DAG: define available_externally hidden i32 @staticfunc.llvm.2()
49
50; CHECK-DAG: define available_externally i32 @referenceglobals(i32 %i)
51declare i32 @referenceglobals(...) #1
52
53; The import of referenceglobals will expose call to globalfunc1 that
54; should in turn be imported.
55; CHECK-DAG: define available_externally void @globalfunc1()
56
57; CHECK-DAG: define available_externally i32 @referencecommon(i32 %i)
58declare i32 @referencecommon(...) #1
59
60; CHECK-DAG: define available_externally void @setfuncptr()
61declare void @setfuncptr(...) #1
62
63; CHECK-DAG: define available_externally void @callfuncptr()
64declare void @callfuncptr(...) #1
65
66; Ensure that all uses of local variable @P which has used in setfuncptr
67; and callfuncptr are to the same promoted/renamed global.
68; CHECK-DAG: @P.llvm.2 = available_externally hidden global void ()* null
69; CHECK-DAG: %0 = load void ()*, void ()** @P.llvm.2,
70; CHECK-DAG: store void ()* @staticfunc2.llvm.2, void ()** @P.llvm.2,
71
72; Won't import weak func
73; CHECK-DAG: declare void @weakfunc(...)
74declare void @weakfunc(...) #1
75
76