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265b7f9709
This reverts commit r293970. After more discussion, this belongs to the linker side and there is no added value to do it at this level. llvm-svn: 293993
110 lines
3.9 KiB
LLVM
110 lines
3.9 KiB
LLVM
; 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=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
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; 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
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; RUN: llvm-lto -exported-symbol=_main -thinlto-action=run %t1.bc %t2.bc
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; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=CHECK-NM
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; RUN: llvm-lto2 %t1.bc %t2.bc -o %t.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 %t2.bc,_baz,pl \
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; RUN: -r %t2.bc,_boo,pl \
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; RUN: -r %t2.bc,_dead_func,pl \
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; RUN: -r %t2.bc,_another_dead_func,pl
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; RUN: llvm-dis < %t.out.0.3.import.bc | FileCheck %s
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; RUN: llvm-dis < %t.out.1.3.import.bc | FileCheck %s --check-prefix=CHECK2
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; RUN: llvm-nm %t.out.1 | FileCheck %s --check-prefix=CHECK2-NM
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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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; 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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; We should have eventually revoved @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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; 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 %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 %t3.bc,_baz,pl \
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; RUN: -r %t3.bc,_boo,pl \
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; RUN: -r %t3.bc,_dead_func,pl \
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; RUN: -r %t3.bc,_another_dead_func,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 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 ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }]
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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 void @main() {
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call void @bar()
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call void @bar_internal()
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ret void
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}
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