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
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
27 ; Check that variable has been promoted in the source module
28 ; PROMOTE: @_ZL3Obj.llvm.{{.*}} = hidden constant %struct.S { i32 4, i32 8, ptr @val }
30 ; @outer is a write-only variable, so it's been converted to zeroinitializer.
31 ; IMPORT: @val = available_externally global i32 42
32 ; IMPORT-NEXT: @_ZL3Obj.llvm.{{.*}} = available_externally hidden constant %struct.S { i32 4, i32 8, ptr @val }
33 ; IMPORT-NEXT: @outer = internal local_unnamed_addr global %struct.Q zeroinitializer
35 ; @outer is a write-only variable that's stored to once, so the store and the global can be removed.
38 ; OPT: define dso_local noundef i32 @main()
40 ; OPT-NEXT: ret i32 12
42 ; NOREFS: @_ZL3Obj.llvm.{{.*}} = external hidden constant %struct.S
43 ; NOREFS-NEXT: @outer = internal local_unnamed_addr global %struct.Q zeroinitializer
45 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
46 target triple = "x86_64-unknown-linux-gnu"
48 %struct.S = type { i32, i32, ptr }
50 define dso_local i32 @main() local_unnamed_addr {
52 %call = tail call ptr @_Z6getObjv()
53 %0 = load i32, ptr %call, align 8
54 %v = getelementptr inbounds %struct.S, ptr %call, i64 0, i32 1
55 %1 = load i32, ptr %v, align 4
56 %add = add nsw i32 %1, %0
60 declare dso_local ptr @_Z6getObjv() local_unnamed_addr