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; Test to ensure that dead alias are dropped by converting to a declaration
; RUN: opt -module-summary %s -o %t1.bc
; RUN: llvm-lto2 run %t1.bc -r %t1.bc,barAlias,x \
; RUN: -r %t1.bc,bar,x -r %t1.bc,zed,px \
; RUN: -r %t1.bc,var,x -r %t1.bc,varAlias,x \
; RUN: -o %t2.o -save-temps
; Check that bar and barAlias were dropped to declarations
; RUN: llvm-dis %t2.o.1.1.promote.bc -o - | FileCheck %s --check-prefix=DROP
; DROP-DAG: declare void @bar()
; DROP-DAG: declare void @barAlias()
; DROP-DAG: @var = external global i32
; DROP-DAG: @varAlias = external global i32
; Check that 'barAlias' and 'varAlias' were not inlined.
; RUN: llvm-objdump -d %t2.o.1 | FileCheck %s
; CHECK: zed:
; CHECK-NEXT: {{.*}} pushq
; CHECK-NEXT: {{.*}} callq 0
; CHECK-NEXT: movq (%rip), %rax
; Check that 'barAlias' and 'varAlias' produced as undefined.
; RUN: llvm-readelf --symbols %t2.o.1 | FileCheck %s --check-prefix=SYMBOLS
; SYMBOLS: NOTYPE GLOBAL DEFAULT UND barAlias
; SYMBOLS: NOTYPE GLOBAL DEFAULT UND varAlias
; SYMBOLS: FUNC GLOBAL DEFAULT 2 zed
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@barAlias = alias void(), void()* @bar
define void @bar() {
ret void
}
@var = global i32 99
@varAlias = alias i32, i32* @var
define i32 @zed() {
call void @barAlias()
%1 = load i32, i32* @varAlias, align 4
ret i32 %1
}
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