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; EXPORTSTATIC-DAG: @staticconstvar = internal unnamed_addr constant 18; EXPORTSTATIC-DAG: @P.llvm.{{.*}} = hidden global void ()* null 19; EXPORTSTATIC-DAG: define hidden i32 @staticfunc.llvm. 20; EXPORTSTATIC-DAG: define hidden void @staticfunc2.llvm. 21 22; Ensure that both weak alias to an imported function and strong alias to a 23; non-imported function are correctly turned into declarations. 24; Also ensures that alias to a linkonce function is turned into a declaration 25; and that the associated linkonce function is not in the output, as it is 26; lazily linked and never referenced/materialized. 27; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB1 28; IMPORTGLOB1-DAG: define available_externally void @globalfunc1 29; IMPORTGLOB1-DAG: declare void @weakalias 30; IMPORTGLOB1-DAG: declare void @analias 31; IMPORTGLOB1-NOT: @linkoncealias 32; IMPORTGLOB1-NOT: @linkoncefunc 33; IMPORTGLOB1-NOT: declare void @globalfunc2 34 35; Ensure that weak alias to a non-imported function is correctly 36; turned into a declaration, but that strong alias to an imported function 37; is imported as alias. 38; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB2 39; IMPORTGLOB2-DAG: declare void @analias 40; IMPORTGLOB2-DAG: define available_externally void @globalfunc2 41; IMPORTGLOB2-DAG: declare void @weakalias 42; IMPORTGLOB2-NOT: declare void @globalfunc1 43 44; Ensure that strong alias imported in second pass of importing ends up 45; as an alias. 46; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc1:%t.bc -import=globalfunc2:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB3 47; IMPORTGLOB3-DAG: declare void @analias 48; IMPORTGLOB3-DAG: define available_externally void @globalfunc1 49; IMPORTGLOB3-DAG: define available_externally void @globalfunc2 50; IMPORTGLOB3-DAG: declare void @weakalias 51 52; Ensure that strong alias imported in first pass of importing ends up 53; as an alias, and that seeing the alias definition during a second inlining 54; pass is handled correctly. 55; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=globalfunc2:%t.bc -import=globalfunc1:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB4 56; IMPORTGLOB4-DAG: declare void @analias 57; IMPORTGLOB4-DAG: define available_externally void @globalfunc2 58; IMPORTGLOB4-DAG: define available_externally void @globalfunc1 59; IMPORTGLOB4-DAG: declare void @weakalias 60 61; An alias to an imported function is imported as alias if the function is not 62; available_externally. 63; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=linkoncefunc:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOB5 64; IMPORTGLOB5-DAG: linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*) 65; IMPORTGLOB5-DAG: define linkonce_odr 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; IMPORTSTATIC-DAG: @staticconstvar.llvm.{{.*}} = internal unnamed_addr constant 72; IMPORTSTATIC-DAG: define available_externally i32 @referencestatics 73; IMPORTSTATIC-DAG: %call = call i32 @staticfunc.llvm. 74; IMPORTSTATIC-DAG: %0 = load i32, i32* @staticvar.llvm. 75; IMPORTSTATIC-DAG: declare hidden i32 @staticfunc.llvm. 76 77; Ensure that imported global (external) function and variable references 78; are handled correctly (including referenced variable imported as 79; available_externally definition) 80; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=referenceglobals:%t.bc -S | FileCheck %s --check-prefix=IMPORTGLOBALS 81; IMPORTGLOBALS-DAG: @globalvar = external global 82; IMPORTGLOBALS-DAG: declare void @globalfunc1() 83; IMPORTGLOBALS-DAG: define available_externally i32 @referenceglobals 84 85; Ensure that common variable correctly imported as common defition. 86; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=referencecommon:%t.bc -S | FileCheck %s --check-prefix=IMPORTCOMMON 87; IMPORTCOMMON-DAG: @commonvar = external global 88; IMPORTCOMMON-DAG: define available_externally i32 @referencecommon 89 90; Ensure that imported static function pointer correctly promoted and renamed. 91; RUN: llvm-link %t2.bc -summary-index=%t3.thinlto.bc -import=callfuncptr:%t.bc -S | FileCheck %s --check-prefix=IMPORTFUNCPTR 92; IMPORTFUNCPTR-DAG: @P.llvm.{{.*}} = external hidden global void ()* 93; IMPORTFUNCPTR-DAG: define available_externally void @callfuncptr 94; IMPORTFUNCPTR-DAG: %0 = load void ()*, void ()** @P.llvm. 95 96; Ensure that imported weak function reference/definition handled properly. 97; Imported weak_any definition should be skipped with warning, and imported 98; reference should turned into an external_weak declaration. 99; 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 100; IMPORTWEAKFUNC-DAG: Ignoring import request for weak-any function weakfunc 101; IMPORTWEAKFUNC-DAG: declare void @weakfunc 102; IMPORTWEAKFUNC-DAG: define available_externally void @callweakfunc 103; IMPORTWEAKFUNC-NOT: @weakvar = extern_weak global i32, align 4 104 105@globalvar = global i32 1, align 4 106@staticvar = internal global i32 1, align 4 107@staticconstvar = internal unnamed_addr constant [2 x i32] [i32 10, i32 20], align 4 108@commonvar = common global i32 0, align 4 109@P = internal global void ()* null, align 8 110 111@weakalias = weak alias void (...), bitcast (void ()* @globalfunc1 to void (...)*) 112@analias = alias void (...), bitcast (void ()* @globalfunc2 to void (...)*) 113@linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*) 114 115define void @globalfunc1() #0 { 116entry: 117 ret void 118} 119 120define void @globalfunc2() #0 { 121entry: 122 ret void 123} 124 125define linkonce_odr void @linkoncefunc() #0 { 126entry: 127 ret void 128} 129 130define i32 @referencestatics(i32 %i) #0 { 131entry: 132 %i.addr = alloca i32, align 4 133 store i32 %i, i32* %i.addr, align 4 134 %call = call i32 @staticfunc() 135 %0 = load i32, i32* @staticvar, align 4 136 %add = add nsw i32 %call, %0 137 %1 = load i32, i32* %i.addr, align 4 138 %idxprom = sext i32 %1 to i64 139 %arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* @staticconstvar, i64 0, i64 %idxprom 140 %2 = load i32, i32* %arrayidx, align 4 141 %add1 = add nsw i32 %add, %2 142 ret i32 %add1 143} 144 145define i32 @referenceglobals(i32 %i) #0 { 146entry: 147 %i.addr = alloca i32, align 4 148 store i32 %i, i32* %i.addr, align 4 149 call void @globalfunc1() 150 %0 = load i32, i32* @globalvar, align 4 151 ret i32 %0 152} 153 154define i32 @referencecommon(i32 %i) #0 { 155entry: 156 %i.addr = alloca i32, align 4 157 store i32 %i, i32* %i.addr, align 4 158 %0 = load i32, i32* @commonvar, align 4 159 ret i32 %0 160} 161 162define void @setfuncptr() #0 { 163entry: 164 store void ()* @staticfunc2, void ()** @P, align 8 165 ret void 166} 167 168define void @callfuncptr() #0 { 169entry: 170 %0 = load void ()*, void ()** @P, align 8 171 call void %0() 172 ret void 173} 174 175@weakvar = weak global i32 1, align 4 176define weak void @weakfunc() #0 { 177entry: 178 ret void 179} 180 181define void @callweakfunc() #0 { 182entry: 183 call void @weakfunc() 184 ret void 185} 186 187define internal i32 @staticfunc() #0 { 188entry: 189 ret i32 1 190} 191 192define internal void @staticfunc2() #0 { 193entry: 194 ret void 195} 196