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b6303e0ac6
This reverts commit r370083 because it caused check-lld failures on sanitizer-x86_64-linux-fast. llvm-svn: 370142
207 lines
7.2 KiB
LLVM
207 lines
7.2 KiB
LLVM
; Require asserts for -debug-only
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; REQUIRES: asserts
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; RUN: opt -module-summary %s -o %t1.bc
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; RUN: opt -module-summary %p/Inputs/deadstrip.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=thinlink -o %t.index.bc %t1.bc %t2.bc
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; RUN: llvm-lto -exported-symbol=_main -thinlto-action=internalize %t1.bc -thinlto-index=%t.index.bc -o - | llvm-dis -o - | FileCheck %s
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; RUN: llvm-lto -exported-symbol=_main -thinlto-action=internalize %t2.bc -thinlto-index=%t.index.bc -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK2
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; RUN: llvm-lto -exported-symbol=_main -thinlto-action=run -stats %t1.bc %t2.bc 2>&1 | FileCheck %s --check-prefix=STATS
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; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=CHECK-NM
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; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.out -save-temps -stats \
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; RUN: -r %t1.bc,_main,plx \
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; RUN: -r %t1.bc,_bar,pl \
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; RUN: -r %t1.bc,_dead_func,pl \
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; RUN: -r %t1.bc,_baz,l \
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; RUN: -r %t1.bc,_boo,l \
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; RUN: -r %t1.bc,_live_available_externally_func,l \
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; RUN: -r %t1.bc,_live_linkonce_odr_func,l \
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; RUN: -r %t1.bc,_live_weak_odr_func,l \
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; RUN: -r %t1.bc,_linkonceodralias,pl \
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; RUN: -r %t1.bc,_linkonceodrfuncwithalias,l \
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; RUN: -r %t1.bc,_linkonceodrfuncwithalias_caller,pl \
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; RUN: -r %t2.bc,_baz,pl \
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; RUN: -r %t2.bc,_boo,pl \
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; RUN: -r %t2.bc,_dead_func,l \
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; RUN: -r %t2.bc,_another_dead_func,pl \
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; RUN: -r %t2.bc,_linkonceodrfuncwithalias,pl \
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; RUN: -thinlto-threads=1 \
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; RUN: -debug-only=function-import 2>&1 | FileCheck %s --check-prefix=DEBUG --check-prefix=STATS
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; RUN: llvm-dis < %t.out.1.3.import.bc | FileCheck %s --check-prefix=LTO2
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; RUN: llvm-dis < %t.out.2.3.import.bc | FileCheck %s --check-prefix=LTO2-CHECK2
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; RUN: llvm-nm %t.out.1 | FileCheck %s --check-prefix=CHECK2-NM
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; RUN: llvm-bcanalyzer -dump %t.out.index.bc | FileCheck %s --check-prefix=COMBINED
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; Live, NotEligibleForImport, dso_local, Internal
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; COMBINED-DAG: <COMBINED {{.*}} op2=119
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; Live, dso_local, Internal
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; COMBINED-DAG: <COMBINED {{.*}} op2=103
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; Live, Local, WeakODR
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; COMBINED-DAG: <COMBINED {{.*}} op2=101
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; Live, Local, LinkOnceODR
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; COMBINED-DAG: <COMBINED {{.*}} op2=99
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; Live, Local, AvailableExternally
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; COMBINED-DAG: <COMBINED {{.*}} op2=97
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; Live, Local, External
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; COMBINED-DAG: <COMBINED {{.*}} op2=96
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; COMBINED-DAG: <COMBINED {{.*}} op2=96
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; COMBINED-DAG: <COMBINED {{.*}} op2=96
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; Local, (Dead)
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; COMBINED-DAG: <COMBINED {{.*}} op2=64
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; COMBINED-DAG: <COMBINED {{.*}} op2=64
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; COMBINED-DAG: <COMBINED {{.*}} op2=64
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; Dead-stripping on the index allows to internalize these,
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; and limit the import of @baz thanks to early pruning.
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; CHECK-NOT: available_externally {{.*}} @baz()
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; CHECK: @llvm.global_ctors =
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; CHECK: define internal void @_GLOBAL__I_a()
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; CHECK: define internal void @bar() {
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; CHECK: define internal void @bar_internal()
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; CHECK: define internal void @dead_func() {
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; CHECK-NOT: available_externally {{.*}} @baz()
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; LTO2-NOT: available_externally {{.*}} @baz()
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; LTO2: @llvm.global_ctors =
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; LTO2: define internal void @_GLOBAL__I_a()
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; LTO2: define internal void @bar() {
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; LTO2: define internal void @bar_internal()
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; LTO2-NOT: @dead_func()
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; LTO2-NOT: available_externally {{.*}} @baz()
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; Make sure we didn't internalize @boo, which is reachable via
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; llvm.global_ctors
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; CHECK2: define void @boo()
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; LTO2-CHECK2: define dso_local void @boo()
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; Make sure we keep @linkonceodrfuncwithalias in Input/deadstrip.ll alive as it
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; is reachable from @main.
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; LTO2-CHECK2: define weak_odr dso_local void @linkonceodrfuncwithalias() {
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; We should have eventually removed @baz since it was internalized and unused
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; CHECK2-NM-NOT: _baz
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; The final binary should not contain any of the dead functions,
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; only main is expected because bar is expected to be inlined and stripped out.
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; CHECK-NM-NOT: bar
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; CHECK-NM-NOT: dead
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; CHECK-NM: T _main
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; CHECK-NM-NOT: bar
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; CHECK-NM-NOT: dead
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; DEBUG-DAG: Live root: 2412314959268824392 (llvm.global_ctors)
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; DEBUG-DAG: Live root: 15822663052811949562 (main)
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; DEBUG-DAG: Ignores Dead GUID: 7342339837106705152 (dead_func)
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; DEBUG-DAG: Ignores Dead GUID: 7546896869197086323 (baz)
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; DEBUG-DAG: Initialize import for 15611644523426561710 (boo)
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; DEBUG-DAG: Ignores Dead GUID: 2384416018110111308 (another_dead_func)
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; STATS: 3 function-import - Number of dead stripped symbols in index
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; Next test the case where Inputs/deadstrip.ll does not get a module index,
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; which will cause it to be handled by regular LTO in the new LTO API.
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; In that case there are uses of @dead_func in the regular LTO partition
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; and it shouldn't be internalized.
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; RUN: opt %p/Inputs/deadstrip.ll -o %t3.bc
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; RUN: llvm-lto2 run %t1.bc %t3.bc -o %t4.out -save-temps \
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; RUN: -r %t1.bc,_main,plx \
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; RUN: -r %t1.bc,_bar,pl \
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; RUN: -r %t1.bc,_dead_func,pl \
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; RUN: -r %t1.bc,_baz,l \
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; RUN: -r %t1.bc,_boo,l \
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; RUN: -r %t1.bc,_live_available_externally_func,l \
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; RUN: -r %t1.bc,_live_linkonce_odr_func,l \
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; RUN: -r %t1.bc,_live_weak_odr_func,l \
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; RUN: -r %t1.bc,_linkonceodralias,pl \
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; RUN: -r %t1.bc,_linkonceodrfuncwithalias,l \
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; RUN: -r %t1.bc,_linkonceodrfuncwithalias_caller,pl \
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; RUN: -r %t3.bc,_baz,pl \
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; RUN: -r %t3.bc,_boo,pl \
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; RUN: -r %t3.bc,_dead_func,l \
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; RUN: -r %t3.bc,_another_dead_func,pl \
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; RUN: -r %t3.bc,_linkonceodrfuncwithalias,pl
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; RUN: llvm-dis < %t4.out.1.3.import.bc | FileCheck %s --check-prefix=CHECK-NOTDEAD
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; RUN: llvm-nm %t4.out.0 | FileCheck %s --check-prefix=CHECK-NM-NOTDEAD
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; We can't internalize @dead_func because of the use in the regular LTO
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; partition.
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; CHECK-NOTDEAD: define dso_local void @dead_func()
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; We also can't eliminate @baz because it is in the regular LTO partition
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; and called from @dead_func.
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; CHECK-NM-NOTDEAD: T _baz
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_a, i8* null }]
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declare void @baz()
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declare void @boo()
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define internal void @_GLOBAL__I_a() #1 section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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call void @boo()
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ret void
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}
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define void @bar() {
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ret void
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}
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define internal void @bar_internal() {
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ret void
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}
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define void @dead_func() {
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call void @bar()
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call void @baz()
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call void @bar_internal()
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ret void
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}
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define linkonce_odr void @live_linkonce_odr_func() {
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ret void
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}
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define weak_odr void @live_weak_odr_func() {
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ret void
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}
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define available_externally void @live_available_externally_func() {
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ret void
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}
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; This alias will set its base object in this file (linkonceodrfuncwithalias)
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; alive.
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; We want to make sure the @linkonceodrfuncwithalias copy in Input/deadstrip.ll
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; is also scanned when computing reachability.
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@linkonceodralias = linkonce_odr alias void (), void ()* @linkonceodrfuncwithalias
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define linkonce_odr void @linkonceodrfuncwithalias() {
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entry:
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ret void
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}
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define void @linkonceodrfuncwithalias_caller() {
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entry:
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call void @linkonceodrfuncwithalias()
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ret void
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}
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define void @main() {
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call void @bar()
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call void @bar_internal()
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call void @live_linkonce_odr_func()
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call void @live_weak_odr_func()
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call void @live_available_externally_func()
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call void @linkonceodrfuncwithalias_caller()
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call void @linkonceodralias()
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ret void
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}
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