1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=arm64-linux-gnu | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine i64 @get_stack() nounwind { 4*9880d681SAndroid Build Coastguard Workerentry: 5*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: get_stack: 6*9880d681SAndroid Build Coastguard Worker; CHECK: mov x0, sp 7*9880d681SAndroid Build Coastguard Worker %sp = call i64 @llvm.read_register.i64(metadata !0) 8*9880d681SAndroid Build Coastguard Worker ret i64 %sp 9*9880d681SAndroid Build Coastguard Worker} 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdefine void @set_stack(i64 %val) nounwind { 12*9880d681SAndroid Build Coastguard Workerentry: 13*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: set_stack: 14*9880d681SAndroid Build Coastguard Worker; CHECK: mov sp, x0 15*9880d681SAndroid Build Coastguard Worker call void @llvm.write_register.i64(metadata !0, i64 %val) 16*9880d681SAndroid Build Coastguard Worker ret void 17*9880d681SAndroid Build Coastguard Worker} 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workerdeclare i64 @llvm.read_register.i64(metadata) nounwind 20*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.write_register.i64(metadata, i64) nounwind 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard Worker; register unsigned long current_stack_pointer asm("sp"); 23*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: .asciz "sp" 24*9880d681SAndroid Build Coastguard Worker!0 = !{!"sp\00"} 25