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 15target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 16target 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 not optimized 29; MOD1: define linkonce_odr void @linkonceodrfuncwithalias() 30; MOD2: define linkonce_odr void @linkonceodrfuncwithalias() 31define linkonce_odr void @linkonceodrfuncwithalias() #0 { 32entry: 33 ret void 34} 35 36; Function with an alias are not optimized 37; MOD1: define linkonce void @linkoncefuncwithalias() 38; MOD2: define linkonce void @linkoncefuncwithalias() 39define linkonce void @linkoncefuncwithalias() #0 { 40entry: 41 ret void 42} 43 44; MOD1: define weak_odr void @linkonceodrfunc() 45; MOD2: define available_externally void @linkonceodrfunc() 46define linkonce_odr void @linkonceodrfunc() #0 { 47entry: 48 ret void 49} 50; MOD1: define weak void @linkoncefunc() 51; MOD1-INT: define weak void @linkoncefunc() 52; MOD2: define linkonce void @linkoncefunc() 53define linkonce void @linkoncefunc() #0 { 54entry: 55 ret void 56} 57; MOD1: define weak_odr void @weakodrfunc() 58; MOD2: define available_externally void @weakodrfunc() 59define weak_odr void @weakodrfunc() #0 { 60entry: 61 ret void 62} 63; MOD1: define weak void @weakfunc() 64; MOD2: define weak void @weakfunc() 65define weak void @weakfunc() #0 { 66entry: 67 ret void 68} 69 70; MOD1: define weak_odr void @linkonceodrfuncInSingleModule() 71; MOD1-INT: define internal void @linkonceodrfuncInSingleModule() 72; EXPORTED: define weak_odr void @linkonceodrfuncInSingleModule() 73define linkonce_odr void @linkonceodrfuncInSingleModule() #0 { 74entry: 75 ret void 76} 77