derek.holloway
7502bf64a4
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55 lines
2.2 KiB
LLVM
55 lines
2.2 KiB
LLVM
; This test ensures that we drop the preempted copy of @f/@g from %t2.bc from their
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; comdats after making it available_externally. If not we would get a
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; verification error. g_internal/g_private are changed to available_externally
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; as well since it is in the same comdat of g.
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; RUN: opt -module-summary %s -o %t1.bc
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; RUN: opt -module-summary %p/Inputs/linkonce_resolution_comdat.ll -o %t2.bc
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; 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.
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; RUN: llvm-dis %t3.0.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT1
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; RUN: llvm-dis %t3.1.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT2
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; Copy from first module is prevailing and converted to weak_odr, copy
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; from second module is preempted and converted to available_externally and
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; removed from comdat.
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; IMPORT1: @g_private = private global i32 43, comdat($g)
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; IMPORT1: define weak_odr i32 @f(ptr %0) unnamed_addr [[ATTR:#[0-9]+]] comdat {
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; IMPORT1: define weak_odr i32 @g() unnamed_addr [[ATTR]] comdat {
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; IMPORT1: define internal void @g_internal() unnamed_addr comdat($g) {
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; IMPORT2: @g_private = available_externally dso_local global i32 41{{$}}
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; IMPORT2: define available_externally i32 @f(ptr %0) unnamed_addr [[ATTR:#[0-9]+]] {
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; IMPORT2: define available_externally i32 @g() unnamed_addr [[ATTR]] {
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; IMPORT2: define available_externally dso_local void @g_internal() unnamed_addr {
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; CHECK-DAG: attributes [[ATTR]] = { norecurse nounwind }
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; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=NM1
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; NM1: W f
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; NM1: W g
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; RUN: llvm-nm %t2.bc.thinlto.o | FileCheck %s --check-prefix=NM2
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; f() would have been turned into available_externally since it is preempted,
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; and inlined into h()
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; NM2-NOT: f
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; NM2-NOT: g
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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$f = comdat any
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$g = comdat any
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@g_private = private global i32 43, comdat($g)
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define linkonce_odr i32 @f(ptr) unnamed_addr comdat {
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ret i32 43
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}
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define linkonce_odr i32 @g() unnamed_addr comdat {
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ret i32 43
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}
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define internal void @g_internal() unnamed_addr comdat($g) {
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ret void
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}
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