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 when importing references is prohibited
18; RUN: llvm-lto2 run -save-temps %t1.bc %t2.bc -o %t-out-norefs \
19; RUN:    -import-constants-with-refs=false \
20; RUN:    -r=%t1.bc,main,plx \
21; RUN:    -r=%t1.bc,_Z6getObjv,l \
22; RUN:    -r=%t2.bc,_Z6getObjv,pl \
23; RUN:    -r=%t2.bc,val,pl \
24; RUN:    -r=%t2.bc,outer,pl
25; RUN: llvm-dis %t-out-norefs.1.3.import.bc -o - | FileCheck %s --check-prefix=NOREFS
26
27; Check that variable has been promoted in the source module
28; PROMOTE: @_ZL3Obj.llvm.{{.*}} = hidden constant %struct.S { i32 4, i32 8, i32* @val }
29
30; @outer is a write-only variable, so it's been converted to zeroinitializer.
31; IMPORT:      @outer = internal local_unnamed_addr global %struct.Q zeroinitializer
32; IMPORT-NEXT: @_ZL3Obj.llvm.{{.*}} = available_externally hidden constant %struct.S { i32 4, i32 8, i32* @val }
33; IMPORT-NEXT: @val = available_externally global i32 42
34
35; OPT: @outer = internal unnamed_addr global %struct.Q zeroinitializer
36
37; OPT:      define dso_local i32 @main()
38; OPT-NEXT: entry:
39; OPT-NEXT:   store %struct.S* null, %struct.S** getelementptr inbounds (%struct.Q, %struct.Q* @outer, i64 0, i32 0)
40; OPT-NEXT:   ret i32 12
41
42; NOREFS:      @outer = internal local_unnamed_addr global %struct.Q zeroinitializer
43; NOREFS-NEXT: @_ZL3Obj.llvm.{{.*}} = external hidden constant %struct.S
44
45target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
46target triple = "x86_64-unknown-linux-gnu"
47
48%struct.S = type { i32, i32, i32* }
49
50define dso_local i32 @main() local_unnamed_addr {
51entry:
52  %call = tail call %struct.S* @_Z6getObjv()
53  %d = getelementptr inbounds %struct.S, %struct.S* %call, i64 0, i32 0
54  %0 = load i32, i32* %d, align 8
55  %v = getelementptr inbounds %struct.S, %struct.S* %call, i64 0, i32 1
56  %1 = load i32, i32* %v, align 4
57  %add = add nsw i32 %1, %0
58  ret i32 %add
59}
60
61declare dso_local %struct.S* @_Z6getObjv() local_unnamed_addr
62