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: NOTYPE GLOBAL DEFAULT UND barAlias 25 ; SYMBOLS: NOTYPE GLOBAL DEFAULT UND varAlias 26 ; SYMBOLS: FUNC GLOBAL DEFAULT 2 zed 27 28 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 29 target triple = "x86_64-unknown-linux-gnu" 30 31 @barAlias = alias void(), void()* @bar 32 define void @bar() { 33 ret void 34 } 35 36 @var = global i32 99 37 @varAlias = alias i32, i32* @var 38 39 define i32 @zed() { 40 call void @barAlias() 41 %1 = load i32, i32* @varAlias, align 4 42 ret i32 %1 43 } 44
