1; Test to ensure that dead alias are dropped by converting to a declaration 2; RUN: opt -module-summary %s -o %t1.bc 3; RUN: llvm-lto2 run %t1.bc -r %t1.bc,barAlias,x \ 4; RUN: -r %t1.bc,bar,x -r %t1.bc,zed,px \ 5; RUN: -r %t1.bc,var,x -r %t1.bc,varAlias,x \ 6; RUN: -o %t2.o -save-temps 7 8; Check that bar and barAlias were dropped to declarations 9; RUN: llvm-dis %t2.o.1.1.promote.bc -o - | FileCheck %s --check-prefix=DROP 10; DROP-DAG: declare void @bar() 11; DROP-DAG: declare void @barAlias() 12; DROP-DAG: @var = external global i32 13; DROP-DAG: @varAlias = external global i32 14 15; Check that 'barAlias' and 'varAlias' were not inlined. 16; RUN: llvm-objdump -d %t2.o.1 | FileCheck %s 17; CHECK: <zed>: 18; CHECK-NEXT: {{.*}} pushq 19; CHECK-NEXT: {{.*}} callq 0 20; CHECK-NEXT: movq (%rip), %rax 21 22; Check that 'barAlias' and 'varAlias' produced as undefined. 23; RUN: llvm-readelf --symbols %t2.o.1 | FileCheck %s --check-prefix=SYMBOLS 24; SYMBOLS: FUNC GLOBAL DEFAULT 2 zed 25; SYMBOLS: NOTYPE GLOBAL DEFAULT UND barAlias 26; SYMBOLS: NOTYPE GLOBAL DEFAULT UND varAlias 27 28target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 29target triple = "x86_64-unknown-linux-gnu" 30 31@barAlias = alias void(), ptr @bar 32define void @bar() { 33 ret void 34} 35 36@var = global i32 99 37@varAlias = alias i32, ptr @var 38 39define i32 @zed() { 40 call void @barAlias() 41 %1 = load i32, ptr @varAlias, align 4 42 ret i32 %1 43} 44