// REQUIRES: aarch64-registered-target

// RUN: %clang_cc1 -triple arm64-windows -fms-compatibility -S \
// RUN: -o - %s | FileCheck %s -check-prefix CHECK-ASM

// RUN: %clang_cc1 -triple arm64-windows -fms-compatibility -emit-llvm \
// RUN: -o - %s | FileCheck %s -check-prefix CHECK-IR

// RUN: %clang_cc1 -triple arm64-darwin -fms-compatibility -emit-llvm \
// RUN: -o - %s | FileCheck %s -check-prefix CHECK-IR

// From winnt.h
// op0=1 encodings, use with __sys
#define ARM64_SYSINSTR(op0, op1, crn, crm, op2) \
        ( ((op1 & 7) << 11) | \
          ((crn & 15) << 7) | \
          ((crm & 15) << 3) | \
          ((op2 & 7) << 0) )

//
// Sampling of instructions
//
#define ARM64_DC_CGDSW_EL1      ARM64_SYSINSTR(1,0, 7,10,6) // Clean of Data and Allocation Tags by Set/Way
#define ARM64_IC_IALLU_EL1      ARM64_SYSINSTR(1,0, 7, 5,0) // Instruction Cache Invalidate All to PoU
#define ARM64_AT_S1E2W          ARM64_SYSINSTR(1,4, 7, 8,1) // Translate Stage1, EL2, write
#define ARM64_TLBI_VMALLE1      ARM64_SYSINSTR(1,0, 8, 7,0) // Invalidate stage 1 TLB [CP15_TLBIALL]
#define ARM64_CFP_RCTX          ARM64_SYSINSTR(1,3, 7, 3,4) // Control Flow Prediction Restriction by Context

// From intrin.h
unsigned int __sys(int, __int64);

void check__sys(__int64 v) {
  __int64 ret;

  __sys(ARM64_DC_CGDSW_EL1, v);
// CHECK-ASM: msr     S1_0_C7_C10_6, x8
// CHECK-IR: %[[VAR:.*]] = load i64,
// CHECK-IR-NEXT: call void @llvm.write_register.i64(metadata ![[MD2:.*]], i64 %[[VAR]])

  __sys(ARM64_IC_IALLU_EL1, v);
// CHECK-ASM: msr     S1_0_C7_C5_0, x8
// CHECK-IR: %[[VAR:.*]] = load i64,
// CHECK-IR-NEXT: call void @llvm.write_register.i64(metadata ![[MD3:.*]], i64 %[[VAR]])

  __sys(ARM64_AT_S1E2W, v);
// CHECK-ASM: msr     S1_4_C7_C8_1, x8
// CHECK-IR: %[[VAR:.*]] = load i64,
// CHECK-IR-NEXT: call void @llvm.write_register.i64(metadata ![[MD4:.*]], i64 %[[VAR]])

  __sys(ARM64_TLBI_VMALLE1, v);
// CHECK-ASM: msr     S1_0_C8_C7_0, x8
// CHECK-IR: %[[VAR:.*]] = load i64,
// CHECK-IR-NEXT: call void @llvm.write_register.i64(metadata ![[MD5:.*]], i64 %[[VAR]])

  __sys(ARM64_CFP_RCTX, v);
// CHECK-ASM: msr     S1_3_C7_C3_4, x8
// CHECK-IR: %[[VAR:.*]] = load i64,
// CHECK-IR-NEXT: call void @llvm.write_register.i64(metadata ![[MD6:.*]], i64 %[[VAR]])
}

// CHECK-IR: ![[MD2]] = !{!"1:0:7:10:6"}
// CHECK-IR: ![[MD3]] = !{!"1:0:7:5:0"}
// CHECK-IR: ![[MD4]] = !{!"1:4:7:8:1"}
// CHECK-IR: ![[MD5]] = !{!"1:0:8:7:0"}
// CHECK-IR: ![[MD6]] = !{!"1:3:7:3:4"}