1; Do setup work for all below tests: generate bitcode and combined index
2; RUN: llvm-as -module-summary %s -o %t.bc
3; RUN: llvm-as -module-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 -stats -print-imports -summary-file %t3.thinlto.bc %t.bc -S 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIMDEF
8; "-stats" requires +Asserts.
9; REQUIRES: asserts
10
11; Test import with smaller instruction limit
12; RUN: opt -function-import -summary-file %t3.thinlto.bc %t.bc -import-instr-limit=5 -S | FileCheck %s --check-prefix=CHECK --check-prefix=INSTLIM5
13; INSTLIM5-NOT: @staticfunc.llvm.2
14
15define i32 @main() #0 {
16entry:
17  call void (...) @weakalias()
18  call void (...) @analias()
19  call void (...) @linkoncealias()
20  %call = call i32 (...) @referencestatics()
21  %call1 = call i32 (...) @referenceglobals()
22  %call2 = call i32 (...) @referencecommon()
23  call void (...) @setfuncptr()
24  call void (...) @callfuncptr()
25  call void (...) @weakfunc()
26  ret i32 0
27}
28
29; Won't import weak alias
30; CHECK-DAG: declare void @weakalias
31declare void @weakalias(...) #1
32
33; Cannot create an alias to available_externally
34; CHECK-DAG: declare void @analias
35declare void @analias(...) #1
36
37; Aliases import the aliasee function
38declare void @linkoncealias(...) #1
39; INSTLIMDEF-DAG: Import linkoncealias
40; INSTLIMDEF-DAG: Import linkoncefunc
41; CHECK-DAG: define linkonce_odr void @linkoncefunc()
42; CHECK-DAG: @linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*
43
44; INSTLIMDEF-DAG: Import referencestatics
45; INSTLIMDEF-DAG: define available_externally i32 @referencestatics(i32 %i)
46; INSTLIM5-DAG: declare i32 @referencestatics(...)
47declare i32 @referencestatics(...) #1
48
49; The import of referencestatics will expose call to staticfunc that
50; should in turn be imported as a promoted/renamed and hidden function.
51; Ensure that the call is to the properly-renamed function.
52; INSTLIMDEF-DAG: Import staticfunc
53; INSTLIMDEF-DAG: %call = call i32 @staticfunc.llvm.2()
54; INSTLIMDEF-DAG: define available_externally hidden i32 @staticfunc.llvm.2()
55
56; INSTLIMDEF-DAG: Import referenceglobals
57; CHECK-DAG: define available_externally i32 @referenceglobals(i32 %i)
58declare i32 @referenceglobals(...) #1
59
60; The import of referenceglobals will expose call to globalfunc1 that
61; should in turn be imported.
62; INSTLIMDEF-DAG: Import globalfunc1
63; CHECK-DAG: define available_externally void @globalfunc1()
64
65; INSTLIMDEF-DAG: Import referencecommon
66; CHECK-DAG: define available_externally i32 @referencecommon(i32 %i)
67declare i32 @referencecommon(...) #1
68
69; INSTLIMDEF-DAG: Import setfuncptr
70; CHECK-DAG: define available_externally void @setfuncptr()
71declare void @setfuncptr(...) #1
72
73; INSTLIMDEF-DAG: Import callfuncptr
74; CHECK-DAG: define available_externally void @callfuncptr()
75declare void @callfuncptr(...) #1
76
77; Ensure that all uses of local variable @P which has used in setfuncptr
78; and callfuncptr are to the same promoted/renamed global.
79; CHECK-DAG: @P.llvm.2 = external hidden global void ()*
80; CHECK-DAG: %0 = load void ()*, void ()** @P.llvm.2,
81; CHECK-DAG: store void ()* @staticfunc2.llvm.2, void ()** @P.llvm.2,
82
83; Won't import weak func
84; CHECK-DAG: declare void @weakfunc(...)
85declare void @weakfunc(...) #1
86
87; INSTLIMDEF-DAG: Import funcwithpersonality
88; INSTLIMDEF-DAG: define available_externally hidden void @funcwithpersonality.llvm.2() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
89; INSTLIM5-DAG: declare hidden void @funcwithpersonality.llvm.2()
90
91; INSTLIMDEF-DAG: Import globalfunc2
92; INSTLIMDEF-DAG: 11 function-import - Number of functions imported
93