xref: /llvm-project/llvm/test/Transforms/ConstantMerge/merge-both.ll (revision 055fb7795aa219a3d274d280ec9129784f169f56)
1cee313d2SEric Christopher; RUN: opt -S < %s -passes=constmerge | FileCheck %s
2cee313d2SEric Christopher; Test that in one run var3 is merged into var2 and var1 into var4.
3cee313d2SEric Christopher; Test that we merge @var5 and @var6 into one with the higher alignment
4cee313d2SEric Christopher
5*055fb779SNikita Popovdeclare void @zed(ptr, ptr)
6cee313d2SEric Christopher
7cee313d2SEric Christopher%struct.foobar = type { i32 }
8cee313d2SEric Christopher
9cee313d2SEric Christopher@var1 = internal constant %struct.foobar { i32 2 }
10cee313d2SEric Christopher@var2 = unnamed_addr constant %struct.foobar { i32 2 }
11cee313d2SEric Christopher@var3 = internal constant %struct.foobar { i32 2 }
12cee313d2SEric Christopher@var4 = unnamed_addr constant %struct.foobar { i32 2 }
13cee313d2SEric Christopher
14cee313d2SEric Christopher; CHECK:      %struct.foobar = type { i32 }
15cee313d2SEric Christopher; CHECK-NOT: @
16cee313d2SEric Christopher; CHECK: @var2 = constant %struct.foobar { i32 2 }
17cee313d2SEric Christopher; CHECK-NEXT: @var4 = constant %struct.foobar { i32 2 }
18cee313d2SEric Christopher
19*055fb779SNikita Popovdeclare void @helper(ptr)
20cee313d2SEric Christopher@var5 = internal constant [16 x i8] c"foo1bar2foo3bar\00", align 16
21cee313d2SEric Christopher@var6 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00", align 1
22cee313d2SEric Christopher@var7 = internal constant [16 x i8] c"foo1bar2foo3bar\00"
23cee313d2SEric Christopher@var8 = private unnamed_addr constant [16 x i8] c"foo1bar2foo3bar\00"
24cee313d2SEric Christopher
25cee313d2SEric Christopher; CHECK-NEXT: @var7 = internal constant [16 x i8] c"foo1bar2foo3bar\00"
26cee313d2SEric Christopher; CHECK-NEXT: @var8 = private constant [16 x i8] c"foo1bar2foo3bar\00", align 16
27cee313d2SEric Christopher
28*055fb779SNikita Popov@var4a = alias %struct.foobar, ptr @var4
29*055fb779SNikita Popov@llvm.used = appending global [1 x ptr] [ptr @var4a], section "llvm.metadata"
30cee313d2SEric Christopher
31cee313d2SEric Christopherdefine i32 @main() {
32cee313d2SEric Christopherentry:
33*055fb779SNikita Popov  call void @zed(ptr @var1, ptr @var2)
34*055fb779SNikita Popov  call void @zed(ptr @var3, ptr @var4)
35*055fb779SNikita Popov  call void @helper(ptr @var5)
36*055fb779SNikita Popov  call void @helper(ptr @var6)
37*055fb779SNikita Popov  call void @helper(ptr @var7)
38*055fb779SNikita Popov  call void @helper(ptr @var8)
39cee313d2SEric Christopher  ret i32 0
40cee313d2SEric Christopher}
41cee313d2SEric Christopher
42