| ; RUN: llc < %s -mtriple=aarch64-none-eabi -mcpu=cortex-a57 2>&1 | FileCheck %s |
| |
| define i64 @read_encoded_register() nounwind { |
| entry: |
| ; CHECK-LABEL: read_encoded_register: |
| ; CHECK: mrs x0, S1_2_C3_C4_5 |
| %reg = call i64 @llvm.read_register.i64(metadata !0) |
| ret i64 %reg |
| } |
| |
| define i64 @read_daif() nounwind { |
| entry: |
| ; CHECK-LABEL: read_daif: |
| ; CHECK: mrs x0, DAIF |
| %reg = call i64 @llvm.read_register.i64(metadata !1) |
| ret i64 %reg |
| } |
| |
| define void @write_encoded_register(i64 %x) nounwind { |
| entry: |
| ; CHECK-LABEL: write_encoded_register: |
| ; CHECK: msr S1_2_C3_C4_5, x0 |
| call void @llvm.write_register.i64(metadata !0, i64 %x) |
| ret void |
| } |
| |
| define void @write_daif(i64 %x) nounwind { |
| entry: |
| ; CHECK-LABEL: write_daif: |
| ; CHECK: msr DAIF, x0 |
| call void @llvm.write_register.i64(metadata !1, i64 %x) |
| ret void |
| } |
| |
| define void @write_daifset() nounwind { |
| entry: |
| ; CHECK-LABEL: write_daifset: |
| ; CHECK: msr DAIFSet, #2 |
| call void @llvm.write_register.i64(metadata !2, i64 2) |
| ret void |
| } |
| |
| declare i64 @llvm.read_register.i64(metadata) nounwind |
| declare void @llvm.write_register.i64(metadata, i64) nounwind |
| |
| !0 = !{!"1:2:3:4:5"} |
| !1 = !{!"daif"} |
| !2 = !{!"daifset"} |
