1; RUN: llvm-diff %s %s
2
3; An initializer that has a GEP instruction in it won't match itself in
4; llvm-diff unless the a deep comparison is done on the initializer.
5
6@gv1 = external dso_local global [28 x i16], align 16
7@gv2 = private unnamed_addr constant [2 x i16*] [i16* getelementptr inbounds ([28 x i16], [28 x i16]* @gv1, i32 0, i32 0), i16* poison], align 16
8
9define void @foo() {
10  %1 = getelementptr [2 x i16*], [2 x i16*]* @gv2, i64 0, i64 undef
11  ret void
12}
13
14; A named structure may be renamed when the right module is read. This is due
15; to the LLParser being different between the left and right modules, and the
16; context renaming one.
17
18%struct.ty1 = type { i16, i16 }
19
20@gv3 = internal global [1 x %struct.ty1] [%struct.ty1 { i16 928, i16 0 }], align 16
21
22define void @bar() {
23  %1 = getelementptr [1 x %struct.ty1], [1 x %struct.ty1]* @gv3, i64 0, i64 undef
24  ret void
25}
26
27; An initializer may reference the variable it's initializing via bitcast /
28; GEP. Check that it doesn't cause an infinite loop.
29
30%struct.mutex = type { %struct.list_head }
31%struct.list_head = type { %struct.list_head*, %struct.list_head* }
32
33@vmx_l1d_flush_mutex = internal global %struct.mutex { %struct.list_head { %struct.list_head* bitcast (i8* getelementptr (i8, i8* bitcast (%struct.mutex* @vmx_l1d_flush_mutex to i8*), i64 16) to %struct.list_head*), %struct.list_head* bitcast (i8* getelementptr (i8, i8* bitcast (%struct.mutex* @vmx_l1d_flush_mutex to i8*), i64 16) to %struct.list_head*) } }, align 8
34
35define internal i32 @qux() {
36  call void undef(%struct.mutex* @vmx_l1d_flush_mutex)
37  ret i32 undef
38}
39
40; An initializer could use itself as part of the initialization.
41
42@kvm_debugfs_entries = internal global %struct.list_head { %struct.list_head* @kvm_debugfs_entries, %struct.list_head* @kvm_debugfs_entries }, align 8
43
44define i64 @mux() {
45  %1 = load i8*, i8** bitcast (%struct.list_head* @kvm_debugfs_entries to i8**), align 8
46  ret i64 undef
47}
48