1; RUN: llc < %s -mtriple=aarch64-none-eabi -mcpu=cortex-a57 2>&1 | FileCheck %s
2
3define i64 @read_encoded_register() nounwind {
4entry:
5; CHECK-LABEL: read_encoded_register:
6; CHECK: mrs x0, S1_2_C3_C4_5
7  %reg = call i64 @llvm.read_register.i64(metadata !0)
8  ret i64 %reg
9}
10
11define i64 @read_daif() nounwind {
12entry:
13; CHECK-LABEL: read_daif:
14; CHECK: mrs x0, DAIF
15  %reg = call i64 @llvm.read_register.i64(metadata !1)
16  ret i64 %reg
17}
18
19define void @write_encoded_register(i64 %x) nounwind {
20entry:
21; CHECK-LABEL: write_encoded_register:
22; CHECK: msr S1_2_C3_C4_5, x0
23  call void @llvm.write_register.i64(metadata !0, i64 %x)
24  ret void
25}
26
27define void @write_daif(i64 %x) nounwind {
28entry:
29; CHECK-LABEL: write_daif:
30; CHECK: msr DAIF, x0
31  call void @llvm.write_register.i64(metadata !1, i64 %x)
32  ret void
33}
34
35define void @write_daifset() nounwind {
36entry:
37; CHECK-LABEL: write_daifset:
38; CHECK: msr DAIFSet, #2
39  call void @llvm.write_register.i64(metadata !2, i64 2)
40  ret void
41}
42
43declare i64 @llvm.read_register.i64(metadata) nounwind
44declare void @llvm.write_register.i64(metadata, i64) nounwind
45
46!0 = !{!"1:2:3:4:5"}
47!1 = !{!"daif"}
48!2 = !{!"daifset"}
49