derek.holloway
7502bf64a4
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44 lines
1.4 KiB
LLVM
44 lines
1.4 KiB
LLVM
; Test to ensure that dead alias are dropped by converting to a declaration
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; RUN: opt -module-summary %s -o %t1.bc
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; RUN: llvm-lto2 run %t1.bc -r %t1.bc,barAlias,x \
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; RUN: -r %t1.bc,bar,x -r %t1.bc,zed,px \
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; RUN: -r %t1.bc,var,x -r %t1.bc,varAlias,x \
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; RUN: -o %t2.o -save-temps
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; Check that bar and barAlias were dropped to declarations
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; RUN: llvm-dis %t2.o.1.1.promote.bc -o - | FileCheck %s --check-prefix=DROP
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; DROP-DAG: declare void @bar()
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; DROP-DAG: declare void @barAlias()
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; DROP-DAG: @var = external global i32
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; DROP-DAG: @varAlias = external global i32
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; Check that 'barAlias' and 'varAlias' were not inlined.
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; RUN: llvm-objdump -d %t2.o.1 | FileCheck %s
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; CHECK: <zed>:
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; CHECK-NEXT: {{.*}} pushq
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; CHECK-NEXT: {{.*}} callq 0
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; CHECK-NEXT: movq (%rip), %rax
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; Check that 'barAlias' and 'varAlias' produced as undefined.
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; RUN: llvm-readelf --symbols %t2.o.1 | FileCheck %s --check-prefix=SYMBOLS
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; SYMBOLS: FUNC GLOBAL DEFAULT 2 zed
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; SYMBOLS: NOTYPE GLOBAL DEFAULT UND barAlias
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; SYMBOLS: NOTYPE GLOBAL DEFAULT UND varAlias
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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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@barAlias = alias void(), ptr @bar
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define void @bar() {
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ret void
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}
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@var = global i32 99
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@varAlias = alias i32, ptr @var
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define i32 @zed() {
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call void @barAlias()
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%1 = load i32, ptr @varAlias, align 4
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ret i32 %1
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}
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