1 ; First ensure that the ThinLTO handling in llvm-link and llvm-lto handles
2 ; bitcode without summary sections gracefully.
4 ; RUN: opt %p/Inputs/funcimport.ll -o %t2.bc
5 ; RUN: llvm-link %t.bc -summary-index=%t.bc -S
6 ; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
8 ; Do setup work for all below tests: generate bitcode and combined index
9 ; RUN: opt -module-summary %s -o %t.bc
10 ; RUN: opt -module-summary %p/Inputs/funcimport.ll -o %t2.bc
11 ; RUN: llvm-lto -thinlto -o %t3 %t.bc %t2.bc
13 ; Ensure statics are promoted/renamed correctly from this file (all but
14 ; constant variable need promotion).
15 ; RUN: llvm-link %t.bc -summary-index=%t3.thinlto.bc -S | FileCheck %s --check-prefix=EXPORTSTATIC
16 ; EXPORTSTATIC-DAG: @staticvar.llvm.{{.*}} = hidden global
17 ; Eventually @staticconstvar can be exported as a copy and not promoted
18 ; EXPORTSTATIC-DAG: @staticconstvar.llvm.0 = hidden unnamed_addr constant
19 ; EXPORTSTATIC-DAG: @P.llvm.{{.*}} = hidden global void ()* null
20 ; EXPORTSTATIC-DAG: define hidden i32 @staticfunc.llvm.
21 ; EXPORTSTATIC-DAG: define hidden void @staticfunc2.llvm.
23 ; Ensure that both weak alias to an imported function and strong alias to a
24 ; non-imported function are correctly turned into declarations.
25 ; Also ensures that alias to a linkonce function is turned into a declaration
26 ; and that the associated linkonce function is not in the output, as it is
27 ; lazily linked and never referenced/materialized.
28 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB1
29 ; IMPORTGLOB1-DAG: define available_externally void @globalfunc1
30 ; IMPORTGLOB1-DAG: declare void @weakalias
31 ; IMPORTGLOB1-DAG: declare void @analias
32 ; IMPORTGLOB1-NOT: @linkoncealias
33 ; IMPORTGLOB1-NOT: @linkoncefunc
34 ; IMPORTGLOB1-NOT: declare void @globalfunc2
36 ; Ensure that weak alias to a non-imported function is correctly
37 ; turned into a declaration, but that strong alias to an imported function
38 ; is imported as alias.
39 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB2
40 ; IMPORTGLOB2-DAG: declare void @analias
41 ; IMPORTGLOB2-DAG: define available_externally void @globalfunc2
42 ; IMPORTGLOB2-DAG: declare void @weakalias
43 ; IMPORTGLOB2-NOT: declare void @globalfunc1
45 ; Ensure that strong alias imported in second pass of importing ends up
47 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc1:%t.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB3
48 ; IMPORTGLOB3-DAG: declare void @analias
49 ; IMPORTGLOB3-DAG: define available_externally void @globalfunc1
50 ; IMPORTGLOB3-DAG: define available_externally void @globalfunc2
51 ; IMPORTGLOB3-DAG: declare void @weakalias
53 ; Ensure that strong alias imported in first pass of importing ends up
54 ; as an alias, and that seeing the alias definition during a second inlining
55 ; pass is handled correctly.
56 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc2:%t.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB4
57 ; IMPORTGLOB4-DAG: declare void @analias
58 ; IMPORTGLOB4-DAG: define available_externally void @globalfunc2
59 ; IMPORTGLOB4-DAG: define available_externally void @globalfunc1
60 ; IMPORTGLOB4-DAG: declare void @weakalias
62 ; An alias is never imported.
63 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=linkoncefunc:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB5
64 ; IMPORTGLOB5-NOT: @linkoncealias
65 ; IMPORTGLOB5-DAG: define available_externally void @linkoncefunc()
67 ; Ensure that imported static variable and function references are correctly
68 ; promoted and renamed (including static constant variable).
69 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=referencestatics:%t.bc -S | FileCheck %s --check-prefix=IMPORTSTATIC
70 ; IMPORTSTATIC-DAG: @staticvar.llvm.{{.*}} = external hidden global
71 ; Eventually @staticconstvar can be imported as a copy
72 ; IMPORTSTATIC-DAG: @staticconstvar.llvm.{{.*}} = external hidden unnamed_addr constant
73 ; IMPORTSTATIC-DAG: define available_externally i32 @referencestatics
74 ; IMPORTSTATIC-DAG: %call = call i32 @staticfunc.llvm.
75 ; IMPORTSTATIC-DAG: %0 = load i32, i32* @staticvar.llvm.
76 ; IMPORTSTATIC-DAG: declare hidden i32 @staticfunc.llvm.
78 ; Ensure that imported global (external) function and variable references
79 ; are handled correctly (including referenced variable imported as
80 ; available_externally definition)
81 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=referenceglobals:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOBALS
82 ; IMPORTGLOBALS-DAG: @globalvar = external global
83 ; IMPORTGLOBALS-DAG: declare void @globalfunc1()
84 ; IMPORTGLOBALS-DAG: define available_externally i32 @referenceglobals
86 ; Ensure that common variable correctly imported as common defition.
87 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=referencecommon:%t.bc -S | FileCheck %s --check-prefix=IMPORTCOMMON
88 ; IMPORTCOMMON-DAG: @commonvar = external global
89 ; IMPORTCOMMON-DAG: define available_externally i32 @referencecommon
91 ; Ensure that imported static function pointer correctly promoted and renamed.
92 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=callfuncptr:%t.bc -S | FileCheck %s --check-prefix=IMPORTFUNCPTR
93 ; IMPORTFUNCPTR-DAG: @P.llvm.{{.*}} = external hidden global void ()*
94 ; IMPORTFUNCPTR-DAG: define available_externally void @callfuncptr
95 ; IMPORTFUNCPTR-DAG: %0 = load void ()*, void ()** @P.llvm.
97 ; Ensure that imported weak function reference/definition handled properly.
98 ; Imported weak_any definition should be skipped with warning, and imported
99 ; reference should turned into an external_weak declaration.
100 ; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=callweakfunc:%t.bc -import=weakfunc:%t.bc -S 2>&1 | FileCheck %s --check-prefix=IMPORTWEAKFUNC
101 ; IMPORTWEAKFUNC-DAG: Ignoring import request for weak-any function weakfunc
102 ; IMPORTWEAKFUNC-DAG: declare void @weakfunc
103 ; IMPORTWEAKFUNC-DAG: define available_externally void @callweakfunc
104 ; IMPORTWEAKFUNC-NOT: @weakvar = extern_weak global i32, align 4
106 @globalvar = global i32 1, align 4
107 @staticvar = internal global i32 1, align 4
108 @staticconstvar = internal unnamed_addr constant [2 x i32] [i32 10, i32 20], align 4
109 @commonvar = common global i32 0, align 4
110 @P = internal global void ()* null, align 8
112 @weakalias = weak alias void (...), bitcast (void ()* @globalfunc1 to void (...)*)
113 @analias = alias void (...), bitcast (void ()* @globalfunc2 to void (...)*)
114 @linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
116 define void @globalfunc1() #0 {
121 define void @globalfunc2() #0 {
126 define linkonce_odr void @linkoncefunc() #0 {
131 define i32 @referencestatics(i32 %i) #0 {
133 %i.addr = alloca i32, align 4
134 store i32 %i, i32* %i.addr, align 4
135 %call = call i32 @staticfunc()
136 %0 = load i32, i32* @staticvar, align 4
137 %add = add nsw i32 %call, %0
138 %1 = load i32, i32* %i.addr, align 4
139 %idxprom = sext i32 %1 to i64
140 %arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* @staticconstvar, i64 0, i64 %idxprom
141 %2 = load i32, i32* %arrayidx, align 4
142 %add1 = add nsw i32 %add, %2
146 define i32 @referenceglobals(i32 %i) #0 {
148 %i.addr = alloca i32, align 4
149 store i32 %i, i32* %i.addr, align 4
150 call void @globalfunc1()
151 %0 = load i32, i32* @globalvar, align 4
155 define i32 @referencecommon(i32 %i) #0 {
157 %i.addr = alloca i32, align 4
158 store i32 %i, i32* %i.addr, align 4
159 %0 = load i32, i32* @commonvar, align 4
163 define void @setfuncptr() #0 {
165 store void ()* @staticfunc2, void ()** @P, align 8
169 define void @callfuncptr() #0 {
171 %0 = load void ()*, void ()** @P, align 8
176 @weakvar = weak global i32 1, align 4
177 define weak void @weakfunc() #0 {
182 define void @callweakfunc() #0 {
184 call void @weakfunc()
188 define internal i32 @staticfunc() #0 {
193 define internal void @staticfunc2() #0 {