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1; RUN: llc < %s -mtriple=aarch64 -mcpu=cortex-a57 2>&1 | FileCheck %s2 3define i64 @read_encoded_register() nounwind {4entry:5; CHECK-LABEL: read_encoded_register:6; CHECK: mrs x0, S1_2_C3_C4_57 %reg = call i64 @llvm.read_register.i64(metadata !0)8 ret i64 %reg9}10 11define i64 @read_daif() nounwind {12entry:13; CHECK-LABEL: read_daif:14; CHECK: mrs x0, DAIF15 %reg = call i64 @llvm.read_register.i64(metadata !1)16 ret i64 %reg17}18 19define void @write_encoded_register(i64 %x) nounwind {20entry:21; CHECK-LABEL: write_encoded_register:22; CHECK: msr S1_2_C3_C4_5, x023 call void @llvm.write_register.i64(metadata !0, i64 %x)24 ret void25}26 27define void @write_daif(i64 %x) nounwind {28entry:29; CHECK-LABEL: write_daif:30; CHECK: msr DAIF, x031 call void @llvm.write_register.i64(metadata !1, i64 %x)32 ret void33}34 35define void @write_daifset() nounwind {36entry:37; CHECK-LABEL: write_daifset:38; CHECK: msr DAIFSet, #239 call void @llvm.write_register.i64(metadata !2, i64 2)40 ret void41}42 43declare i64 @llvm.read_register.i64(metadata) nounwind44declare void @llvm.write_register.i64(metadata, i64) nounwind45 46!0 = !{!"1:2:3:4:5"}47!1 = !{!"daif"}48!2 = !{!"daifset"}49