1 ; First ensure that the ThinLTO handling in llvm-link and llvm-lto handles 2 ; bitcode without summary sections gracefully. 3 ; RUN: opt %s -o %t.bc 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 7 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 12 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. 22 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 35 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 44 45 ; Ensure that strong alias imported in second pass of importing ends up 46 ; as an alias. 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 52 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 61 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() 66 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. 77 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 85 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 90 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. 96 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 4 105 106 @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 8 111 112 @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 (...)*) 115 116 define void @globalfunc1() #0 { 117 entry: 118 ret void 119 } 120 121 define void @globalfunc2() #0 { 122 entry: 123 ret void 124 } 125 126 define linkonce_odr void @linkoncefunc() #0 { 127 entry: 128 ret void 129 } 130 131 define i32 @referencestatics(i32 %i) #0 { 132 entry: 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, %2 143 ret i32 %add1 144 } 145 146 define i32 @referenceglobals(i32 %i) #0 { 147 entry: 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 4 152 ret i32 %0 153 } 154 155 define i32 @referencecommon(i32 %i) #0 { 156 entry: 157 %i.addr = alloca i32, align 4 158 store i32 %i, i32* %i.addr, align 4 159 %0 = load i32, i32* @commonvar, align 4 160 ret i32 %0 161 } 162 163 define void @setfuncptr() #0 { 164 entry: 165 store void ()* @staticfunc2, void ()** @P, align 8 166 ret void 167 } 168 169 define void @callfuncptr() #0 { 170 entry: 171 %0 = load void ()*, void ()** @P, align 8 172 call void %0() 173 ret void 174 } 175 176 @weakvar = weak global i32 1, align 4 177 define weak void @weakfunc() #0 { 178 entry: 179 ret void 180 } 181 182 define void @callweakfunc() #0 { 183 entry: 184 call void @weakfunc() 185 ret void 186 } 187 188 define internal i32 @staticfunc() #0 { 189 entry: 190 ret i32 1 191 } 192 193 define internal void @staticfunc2() #0 { 194 entry: 195 ret void 196 } 197
