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1; RUN: opt -constmerge -S < %s | FileCheck %s
2; Test that in one run var3 is merged into var2 and var1 into var4.
3; Test that we merge @var5 and @var6 into one with the higher alignment, and
4; don't merge var7/var8 into var5/var6.
5
6declare void @zed(%struct.foobar*, %struct.foobar*)
7
8%struct.foobar = type { i32 }
9
10@var1 = internal constant %struct.foobar { i32 2 }
11@var2 = unnamed_addr constant %struct.foobar { i32 2 }
12@var3 = internal constant %struct.foobar { i32 2 }
13@var4 = unnamed_addr constant %struct.foobar { i32 2 }
14
15; CHECK:      %struct.foobar = type { i32 }
16; CHECK-NOT: @
17; CHECK: @var2 = constant %struct.foobar { i32 2 }
18; CHECK-NEXT: @var4 = constant %struct.foobar { i32 2 }
19
20declare void @helper([16 x i8]*)
21@var5 = internal constant [16 x i8] c"foo1bar2foo3bar\00", align 16
22@var6 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00", align 1
23@var7 = internal constant [16 x i8] c"foo1bar2foo3bar\00"
24@var8 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00"
25
26; CHECK-NEXT: @var6 = private constant [16 x i8] c"foo1bar2foo3bar\00", align 16
27; CHECK-NEXT: @var8 = private constant [16 x i8] c"foo1bar2foo3bar\00"
28
29@var4a = alias %struct.foobar* @var4
30@llvm.used = appending global [1 x %struct.foobar*] [%struct.foobar* @var4a], section "llvm.metadata"
31
32define i32 @main() {
33entry:
34  call void @zed(%struct.foobar* @var1, %struct.foobar* @var2)
35  call void @zed(%struct.foobar* @var3, %struct.foobar* @var4)
36  call void @helper([16 x i8]* @var5)
37  call void @helper([16 x i8]* @var6)
38  call void @helper([16 x i8]* @var7)
39  call void @helper([16 x i8]* @var8)
40  ret i32 0
41}
42
43