| ; Do setup work for all below tests: generate bitcode and combined index |
| ; RUN: opt -module-summary %s -o %t.bc |
| ; RUN: opt -module-summary %p/Inputs/weak_resolution.ll -o %t2.bc |
| ; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t.bc %t2.bc |
| |
| ; Verify that prevailing weak for linker symbol is selected across modules, |
| ; non-prevailing ODR are not kept when possible, but non-ODR non-prevailing |
| ; are not affected. |
| ; RUN: llvm-lto -thinlto-action=promote %t.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=MOD1 |
| ; 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 |
| ; RUN: llvm-lto -thinlto-action=promote %t2.bc -thinlto-index=%t3.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=MOD2 |
| ; When exported, we always preserve a linkonce |
| ; RUN: llvm-lto -thinlto-action=promote %t.bc -thinlto-index=%t3.bc -o - --exported-symbol=linkonceodrfuncInSingleModule | llvm-dis -o - | FileCheck %s --check-prefix=EXPORTED |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.11.0" |
| |
| ; Alias are resolved, but can't be turned into "available_externally" |
| ; MOD1: @linkonceodralias = weak_odr alias void (), void ()* @linkonceodrfuncwithalias |
| ; MOD2: @linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias |
| @linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias |
| |
| ; Alias are resolved, but can't be turned into "available_externally" |
| ; MOD1: @linkoncealias = weak alias void (), void ()* @linkoncefuncwithalias |
| ; MOD2: @linkoncealias = linkonce alias void (), void ()* @linkoncefuncwithalias |
| @linkoncealias = linkonce alias void (), void ()* @linkoncefuncwithalias |
| |
| ; Function with an alias are resolved to weak_odr in prevailing module, but |
| ; not optimized in non-prevailing module (illegal to have an |
| ; available_externally aliasee). |
| ; MOD1: define weak_odr void @linkonceodrfuncwithalias() |
| ; MOD2: define linkonce_odr void @linkonceodrfuncwithalias() |
| define linkonce_odr void @linkonceodrfuncwithalias() #0 { |
| entry: |
| ret void |
| } |
| |
| ; Function with an alias are resolved to weak in prevailing module, but |
| ; not optimized in non-prevailing module (illegal to have an |
| ; available_externally aliasee). |
| ; MOD1: define weak void @linkoncefuncwithalias() |
| ; MOD2: define linkonce void @linkoncefuncwithalias() |
| define linkonce void @linkoncefuncwithalias() #0 { |
| entry: |
| ret void |
| } |
| |
| ; MOD1: define weak_odr void @linkonceodrfunc() |
| ; MOD2: define available_externally void @linkonceodrfunc() |
| define linkonce_odr void @linkonceodrfunc() #0 { |
| entry: |
| ret void |
| } |
| ; MOD1: define weak void @linkoncefunc() |
| ; MOD1-INT: define weak void @linkoncefunc() |
| ; MOD2: declare void @linkoncefunc() |
| define linkonce void @linkoncefunc() #0 { |
| entry: |
| ret void |
| } |
| ; MOD1: define weak_odr void @weakodrfunc() |
| ; MOD2: define available_externally void @weakodrfunc() |
| define weak_odr void @weakodrfunc() #0 { |
| entry: |
| ret void |
| } |
| ; MOD1: define weak void @weakfunc() |
| ; MOD2: declare void @weakfunc() |
| define weak void @weakfunc() #0 { |
| entry: |
| ret void |
| } |
| |
| ; MOD1: define weak_odr void @linkonceodrfuncInSingleModule() |
| ; MOD1-INT: define internal void @linkonceodrfuncInSingleModule() |
| ; EXPORTED: define weak_odr void @linkonceodrfuncInSingleModule() |
| define linkonce_odr void @linkonceodrfuncInSingleModule() #0 { |
| entry: |
| ret void |
| } |