1; RUN: opt -module-summary %s -o %t1.bc
2; RUN: opt -module-summary %p/Inputs/index-const-prop-alias.ll -o %t2.bc
3; RUN: llvm-lto2 run %t1.bc -r=%t1.bc,main,plx -r=%t1.bc,ret_ptr,pl -r=%t1.bc,g.alias,l -r=%t1.bc,g,l \
4; RUN:               %t2.bc -r=%t2.bc,g,pl -r=%t2.bc,g.alias,pl -save-temps -o %t3
5; RUN: llvm-dis %t3.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT
6; RUN: llvm-dis %t3.1.5.precodegen.bc -o - | FileCheck %s --check-prefix=CODEGEN
7
8; When ret_ptr is preserved we return pointer to alias, so we can't internalize aliasee
9; RUN: llvm-lto2 run %t1.bc -r=%t1.bc,main,plx -r=%t1.bc,ret_ptr,plx -r=%t1.bc,g.alias,l -r=%t1.bc,g,l \
10; RUN:               %t2.bc -r=%t2.bc,g,pl -r=%t2.bc,g.alias,pl -save-temps -o %t4
11; RUN: llvm-dis %t4.1.3.import.bc -o - | FileCheck %s --check-prefix=PRESERVED
12
13; When g.alias is preserved we can't internalize aliasee either
14; RUN: llvm-lto2 run %t1.bc -r=%t1.bc,main,plx -r=%t1.bc,ret_ptr,pl -r=%t1.bc,g.alias,l -r=%t1.bc,g,l \
15; RUN:               %t2.bc -r=%t2.bc,g,pl -r=%t2.bc,g.alias,plx -save-temps -o %t5
16; RUN: llvm-dis %t5.1.3.import.bc -o - | FileCheck %s --check-prefix=PRESERVED
17
18; We currently don't support importing aliases
19; IMPORT:       @g.alias = external global i32
20; IMPORT-NEXT:  @g = internal global i32 42, align 4 #0
21; IMPORT:  attributes #0 = { "thinlto-internalize" }
22
23; CODEGEN:      define dso_local i32 @main
24; CODEGEN-NEXT:    ret i32 42
25
26; PRESERVED:      @g.alias = external global i32
27; PRESERVED-NEXT: @g = available_externally global i32 42, align 4
28
29target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
30target triple = "x86_64-unknown-linux-gnu"
31
32@g.alias = external global i32
33@g = external global i32
34
35define i32 @main() {
36  %v = load i32, i32* @g
37  ret i32 %v
38}
39
40define i32* @ret_ptr() {
41  ret i32* @g.alias
42}
43