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1; This test ensures that we drop the preempted copy of @f/@g from %t2.bc from their2; comdats after making it available_externally. If not we would get a3; verification error. g_internal/g_private are changed to available_externally4; as well since it is in the same comdat of g.5; RUN: opt -module-summary %s -o %t1.bc6; RUN: opt -module-summary %p/Inputs/linkonce_resolution_comdat.ll -o %t2.bc7; RUN: llvm-lto -thinlto-action=run -disable-thinlto-funcattrs=0 %t1.bc %t2.bc -exported-symbol=f -exported-symbol=g -exported-symbol=h -thinlto-save-temps=%t3.8 9; RUN: llvm-dis %t3.0.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT110; RUN: llvm-dis %t3.1.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT211; Copy from first module is prevailing and converted to weak_odr, copy12; from second module is preempted and converted to available_externally and13; removed from comdat.14; IMPORT1: @g_private = private global i32 43, comdat($g)15; IMPORT1: define weak_odr i32 @f(ptr %0) unnamed_addr [[ATTR:#[0-9]+]] comdat {16; IMPORT1: define weak_odr i32 @g() unnamed_addr [[ATTR]] comdat {17; IMPORT1: define internal void @g_internal() unnamed_addr comdat($g) {18 19; IMPORT2: @g_private = available_externally dso_local global i32 41{{$}}20; IMPORT2: define available_externally i32 @f(ptr %0) unnamed_addr [[ATTR:#[0-9]+]] {21; IMPORT2: define available_externally i32 @g() unnamed_addr [[ATTR]] {22; IMPORT2: define available_externally dso_local void @g_internal() unnamed_addr {23 24; CHECK-DAG: attributes [[ATTR]] = { norecurse nounwind }25 26; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=NM127; NM1: W f28; NM1: W g29 30; RUN: llvm-nm %t2.bc.thinlto.o | FileCheck %s --check-prefix=NM231; f() would have been turned into available_externally since it is preempted,32; and inlined into h()33; NM2-NOT: f34; NM2-NOT: g35 36target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"37target triple = "x86_64-unknown-linux-gnu"38 39$f = comdat any40$g = comdat any41 42@g_private = private global i32 43, comdat($g)43 44define linkonce_odr i32 @f(ptr) unnamed_addr comdat {45 ret i32 4346}47 48define linkonce_odr i32 @g() unnamed_addr comdat {49 ret i32 4350}51 52define internal void @g_internal() unnamed_addr comdat($g) {53 ret void54}55