forked from OSchip/llvm-project
49 lines
1.1 KiB
LLVM
49 lines
1.1 KiB
LLVM
; 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"}
|