1 ; Do setup work for all below tests: generate bitcode and combined index 2 ; RUN: opt -module-summary %s -o %t.bc 3 ; RUN: opt -module-summary %p/Inputs/weak_resolution.ll -o %t2.bc 4 ; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t.bc %t2.bc 5 6 ; Verify that prevailing weak for linker symbol is selected across modules, 7 ; non-prevailing ODR are not kept when possible, but non-ODR non-prevailing 8 ; are not affected. 9 ; RUN: llvm-lto -thinlto-action=promote %t.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=MOD1 10 ; RUN: llvm-lto -thinlto-action=promote %t.bc -thinlto-index=%t3.bc -exported-symbol=linkoncefunc -o - | llvm-lto -thinlto-action=internalize -thinlto-module-id=%t.bc - -thinlto-index=%t3.bc -exported-symbol=linkoncefunc -o - | llvm-dis -o - | FileCheck %s --check-prefix=MOD1-INT 11 ; RUN: llvm-lto -thinlto-action=promote %t2.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=MOD2 12 ; When exported, we always preserve a linkonce 13 ; RUN: llvm-lto -thinlto-action=promote %t.bc -thinlto-index=%t3.bc -o - --exported-symbol=linkonceodrfuncInSingleModule | llvm-dis -o - | FileCheck %s --check-prefix=EXPORTED 14 15 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 16 target triple = "x86_64-apple-macosx10.11.0" 17 18 ; Alias are resolved, but can't be turned into "available_externally" 19 ; MOD1: @linkonceodralias = weak_odr alias void (), void ()* @linkonceodrfuncwithalias 20 ; MOD2: @linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias 21 @linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias 22 23 ; Alias are resolved, but can't be turned into "available_externally" 24 ; MOD1: @linkoncealias = weak alias void (), void ()* @linkoncefuncwithalias 25 ; MOD2: @linkoncealias = linkonce alias void (), void ()* @linkoncefuncwithalias 26 @linkoncealias = linkonce alias void (), void ()* @linkoncefuncwithalias 27 28 ; Function with an alias are resolved to weak_odr in prevailing module, but 29 ; not optimized in non-prevailing module (illegal to have an 30 ; available_externally aliasee). 31 ; MOD1: define weak_odr void @linkonceodrfuncwithalias() 32 ; MOD2: define linkonce_odr void @linkonceodrfuncwithalias() 33 define linkonce_odr void @linkonceodrfuncwithalias() #0 { 34 entry: 35 ret void 36 } 37 38 ; Function with an alias are resolved to weak in prevailing module, but 39 ; not optimized in non-prevailing module (illegal to have an 40 ; available_externally aliasee). 41 ; MOD1: define weak void @linkoncefuncwithalias() 42 ; MOD2: define linkonce void @linkoncefuncwithalias() 43 define linkonce void @linkoncefuncwithalias() #0 { 44 entry: 45 ret void 46 } 47 48 ; MOD1: define weak_odr void @linkonceodrfunc() 49 ; MOD2: define available_externally void @linkonceodrfunc() 50 define linkonce_odr void @linkonceodrfunc() #0 { 51 entry: 52 ret void 53 } 54 ; MOD1: define weak void @linkoncefunc() 55 ; MOD1-INT: define weak void @linkoncefunc() 56 ; MOD2: declare void @linkoncefunc() 57 define linkonce void @linkoncefunc() #0 { 58 entry: 59 ret void 60 } 61 ; MOD1: define weak_odr void @weakodrfunc() 62 ; MOD2: define available_externally void @weakodrfunc() 63 define weak_odr void @weakodrfunc() #0 { 64 entry: 65 ret void 66 } 67 ; MOD1: define weak void @weakfunc() 68 ; MOD2: declare void @weakfunc() 69 define weak void @weakfunc() #0 { 70 entry: 71 ret void 72 } 73 74 ; MOD1: define weak_odr void @linkonceodrfuncInSingleModule() 75 ; MOD1-INT: define internal void @linkonceodrfuncInSingleModule() 76 ; EXPORTED: define weak_odr void @linkonceodrfuncInSingleModule() 77 define linkonce_odr void @linkonceodrfuncInSingleModule() #0 { 78 entry: 79 ret void 80 } 81
