| ; RUN: opt -module-summary %s -o %t1.bc |
| ; RUN: opt -module-summary %p/Inputs/deadstrip.ll -o %t2.bc |
| ; RUN: llvm-lto -thinlto-action=thinlink -o %t.index.bc %t1.bc %t2.bc |
| |
| ; RUN: llvm-lto -exported-symbol=_main -thinlto-action=promote %t1.bc -thinlto-index=%t.index.bc -o - | llvm-lto -exported-symbol=_main -thinlto-action=internalize -thinlto-index %t.index.bc -thinlto-module-id=%t1.bc - -o - | llvm-dis -o - | FileCheck %s |
| ; RUN: llvm-lto -exported-symbol=_main -thinlto-action=promote %t2.bc -thinlto-index=%t.index.bc -o - | llvm-lto -exported-symbol=_main -thinlto-action=internalize -thinlto-index %t.index.bc -thinlto-module-id=%t2.bc - -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK2 |
| |
| ; RUN: llvm-lto -exported-symbol=_main -thinlto-action=run %t1.bc %t2.bc |
| ; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=CHECK-NM |
| |
| ; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.out -save-temps \ |
| ; RUN: -r %t1.bc,_main,plx \ |
| ; RUN: -r %t1.bc,_bar,pl \ |
| ; RUN: -r %t1.bc,_dead_func,pl \ |
| ; RUN: -r %t1.bc,_baz,l \ |
| ; RUN: -r %t1.bc,_boo,l \ |
| ; RUN: -r %t2.bc,_baz,pl \ |
| ; RUN: -r %t2.bc,_boo,pl \ |
| ; RUN: -r %t2.bc,_dead_func,l \ |
| ; RUN: -r %t2.bc,_another_dead_func,pl |
| ; RUN: llvm-dis < %t.out.1.3.import.bc | FileCheck %s --check-prefix=LTO2 |
| ; RUN: llvm-dis < %t.out.2.3.import.bc | FileCheck %s --check-prefix=LTO2-CHECK2 |
| ; RUN: llvm-nm %t.out.1 | FileCheck %s --check-prefix=CHECK2-NM |
| |
| ; RUN: llvm-bcanalyzer -dump %t.out.index.bc | FileCheck %s --check-prefix=COMBINED |
| ; Live, NotEligibleForImport, Internal |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=55 |
| ; Live, Internal |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=39 |
| ; Live, Local, External |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=96 |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=96 |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=96 |
| ; Local, (Dead) |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=64 |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=64 |
| ; COMBINED-DAG: <COMBINED {{.*}} op2=64 |
| |
| ; Dead-stripping on the index allows to internalize these, |
| ; and limit the import of @baz thanks to early pruning. |
| ; CHECK-NOT: available_externally {{.*}} @baz() |
| ; CHECK: @llvm.global_ctors = |
| ; CHECK: define internal void @_GLOBAL__I_a() |
| ; CHECK: define internal void @bar() { |
| ; CHECK: define internal void @bar_internal() |
| ; CHECK: define internal void @dead_func() { |
| ; CHECK-NOT: available_externally {{.*}} @baz() |
| ; LTO2-NOT: available_externally {{.*}} @baz() |
| ; LTO2: @llvm.global_ctors = |
| ; LTO2: define internal void @_GLOBAL__I_a() |
| ; LTO2: define internal dso_local void @bar() { |
| ; LTO2: define internal void @bar_internal() |
| ; LTO2: define internal dso_local void @dead_func() { |
| ; LTO2-NOT: available_externally {{.*}} @baz() |
| |
| ; Make sure we didn't internalize @boo, which is reachable via |
| ; llvm.global_ctors |
| ; CHECK2: define void @boo() |
| ; LTO2-CHECK2: define dso_local void @boo() |
| ; We should have eventually removed @baz since it was internalized and unused |
| ; CHECK2-NM-NOT: _baz |
| |
| ; The final binary should not contain any of the dead functions, |
| ; only main is expected because bar is expected to be inlined and stripped out. |
| ; CHECK-NM-NOT: bar |
| ; CHECK-NM-NOT: dead |
| ; CHECK-NM: T _main |
| ; CHECK-NM-NOT: bar |
| ; CHECK-NM-NOT: dead |
| |
| ; Next test the case where Inputs/deadstrip.ll does not get a module index, |
| ; which will cause it to be handled by regular LTO in the new LTO API. |
| ; In that case there are uses of @dead_func in the regular LTO partition |
| ; and it shouldn't be internalized. |
| ; RUN: opt %p/Inputs/deadstrip.ll -o %t3.bc |
| ; RUN: llvm-lto2 run %t1.bc %t3.bc -o %t4.out -save-temps \ |
| ; RUN: -r %t1.bc,_main,plx \ |
| ; RUN: -r %t1.bc,_bar,pl \ |
| ; RUN: -r %t1.bc,_dead_func,pl \ |
| ; RUN: -r %t1.bc,_baz,l \ |
| ; RUN: -r %t1.bc,_boo,l \ |
| ; RUN: -r %t3.bc,_baz,pl \ |
| ; RUN: -r %t3.bc,_boo,pl \ |
| ; RUN: -r %t3.bc,_dead_func,l \ |
| ; RUN: -r %t3.bc,_another_dead_func,pl |
| ; RUN: llvm-dis < %t4.out.1.3.import.bc | FileCheck %s --check-prefix=CHECK-NOTDEAD |
| ; RUN: llvm-nm %t4.out.0 | FileCheck %s --check-prefix=CHECK-NM-NOTDEAD |
| |
| ; We can't internalize @dead_func because of the use in the regular LTO |
| ; partition. |
| ; CHECK-NOTDEAD: define dso_local void @dead_func() |
| ; We also can't eliminate @baz because it is in the regular LTO partition |
| ; and called from @dead_func. |
| ; CHECK-NM-NOTDEAD: T _baz |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.11.0" |
| |
| |
| @llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }] |
| |
| declare void @baz() |
| |
| declare void @boo() |
| |
| define internal void @_GLOBAL__I_a() #1 section "__TEXT,__StaticInit,regular,pure_instructions" { |
| entry: |
| call void @boo() |
| ret void |
| } |
| |
| define void @bar() { |
| ret void |
| } |
| |
| define internal void @bar_internal() { |
| ret void |
| } |
| |
| define void @dead_func() { |
| call void @bar() |
| call void @baz() |
| call void @bar_internal() |
| ret void |
| } |
| |
| define void @main() { |
| call void @bar() |
| call void @bar_internal() |
| ret void |
| } |