1; Check that we promote constant object in the source module and import it
2; even when it is referenced in some other GV initializer and/or is used
3; by store instructions.
4; RUN: opt -thinlto-bc %s -o %t1.bc
5; RUN: opt -thinlto-bc %p/Inputs/import-constant.ll -o %t2.bc
6; RUN: llvm-lto2 run -save-temps %t1.bc %t2.bc -o %t-out \
7; RUN:    -import-constants-with-refs \
8; RUN:    -r=%t1.bc,main,plx \
9; RUN:    -r=%t1.bc,_Z6getObjv,l \
10; RUN:    -r=%t2.bc,_Z6getObjv,pl \
11; RUN:    -r=%t2.bc,val,pl \
12; RUN:    -r=%t2.bc,outer,pl
13; RUN: llvm-dis %t-out.2.1.promote.bc -o - | FileCheck %s --check-prefix=PROMOTE
14; RUN: llvm-dis %t-out.1.3.import.bc -o - | FileCheck %s --check-prefix=IMPORT
15; RUN: llvm-dis %t-out.1.4.opt.bc -o - | FileCheck %s --check-prefix=OPT
16
17; Check that variable has been promoted in the source module
18; PROMOTE: @_ZL3Obj.llvm.{{.*}} = hidden constant %struct.S { i32 4, i32 8, i32* @val }
19
20; @outer is a write-only variable, so it's been converted to zeroinitializer.
21; IMPORT:      @outer = internal local_unnamed_addr global %struct.Q zeroinitializer
22; IMPORT-NEXT: @_ZL3Obj.llvm.{{.*}} =  available_externally hidden constant %struct.S { i32 4, i32 8, i32* @val }
23; IMPORT-NEXT: @val = external dso_local global i32
24
25; OPT: @outer = internal unnamed_addr global %struct.Q zeroinitializer
26
27; OPT:      define dso_local i32 @main()
28; OPT-NEXT: entry:
29; OPT-NEXT:   store %struct.S* null, %struct.S** getelementptr inbounds (%struct.Q, %struct.Q* @outer, i64 0, i32 0)
30; OPT-NEXT:   ret i32 12
31
32target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
33target triple = "x86_64-unknown-linux-gnu"
34
35%struct.S = type { i32, i32, i32* }
36
37define dso_local i32 @main() local_unnamed_addr {
38entry:
39  %call = tail call %struct.S* @_Z6getObjv()
40  %d = getelementptr inbounds %struct.S, %struct.S* %call, i64 0, i32 0
41  %0 = load i32, i32* %d, align 8
42  %v = getelementptr inbounds %struct.S, %struct.S* %call, i64 0, i32 1
43  %1 = load i32, i32* %v, align 4
44  %add = add nsw i32 %1, %0
45  ret i32 %add
46}
47
48declare dso_local %struct.S* @_Z6getObjv() local_unnamed_addr
49