1; RUN: llc -mtriple=arm64-apple-ios -O2 -aarch64-collect-loh -aarch64-collect-loh-bb-only=false < %s -o - | FileCheck %s
2; RUN: llc -mtriple=arm64-linux-gnu -O2 -aarch64-collect-loh -aarch64-collect-loh-bb-only=false < %s -o - | FileCheck %s --check-prefix=CHECK-ELF
3
4; CHECK-ELF-NOT: .loh
5; CHECK-ELF-NOT: AdrpAdrp
6; CHECK-ELF-NOT: AdrpAdd
7; CHECK-ELF-NOT: AdrpLdrGot
8
9@a = internal unnamed_addr global i32 0, align 4
10@b = external global i32
11
12; Function Attrs: noinline nounwind ssp
13define void @foo(i32 %t) {
14entry:
15  %tmp = load i32* @a, align 4
16  %add = add nsw i32 %tmp, %t
17  store i32 %add, i32* @a, align 4
18  ret void
19}
20
21; Function Attrs: nounwind ssp
22; Testcase for <rdar://problem/15438605>, AdrpAdrp reuse is valid only when the first adrp
23; dominates the second.
24; The first adrp comes from the loading of 'a' and the second the loading of 'b'.
25; 'a' is loaded in if.then, 'b' in if.end4, if.then does not dominates if.end4.
26; CHECK-LABEL: _test
27; CHECK: ret
28; CHECK-NOT: .loh AdrpAdrp
29define i32 @test(i32 %t) {
30entry:
31  %cmp = icmp sgt i32 %t, 5
32  br i1 %cmp, label %if.then, label %if.end4
33
34if.then:                                          ; preds = %entry
35  %tmp = load i32* @a, align 4
36  %add = add nsw i32 %tmp, %t
37  %cmp1 = icmp sgt i32 %add, 12
38  br i1 %cmp1, label %if.then2, label %if.end4
39
40if.then2:                                         ; preds = %if.then
41  tail call void @foo(i32 %add)
42  %tmp1 = load i32* @a, align 4
43  br label %if.end4
44
45if.end4:                                          ; preds = %if.then2, %if.then, %entry
46  %t.addr.0 = phi i32 [ %tmp1, %if.then2 ], [ %t, %if.then ], [ %t, %entry ]
47  %tmp2 = load i32* @b, align 4
48  %add5 = add nsw i32 %tmp2, %t.addr.0
49  tail call void @foo(i32 %add5)
50  %tmp3 = load i32* @b, align 4
51  %add6 = add nsw i32 %tmp3, %t.addr.0
52  ret i32 %add6
53}
54