1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-linux-gnueabi | FileCheck %s 3*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -O3 -S -mtriple=x86_64-linux-gnueabi | FileCheck %s --check-prefix=OPT 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Workerdefine i64 @get_stack() nounwind { 6*9880d681SAndroid Build Coastguard Workerentry: 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: get_stack: 8*9880d681SAndroid Build Coastguard Worker; CHECK: movq %rsp, %rax 9*9880d681SAndroid Build Coastguard Worker %sp = call i64 @llvm.read_register.i64(metadata !0) 10*9880d681SAndroid Build Coastguard Worker; OPT: @llvm.read_register.i64 11*9880d681SAndroid Build Coastguard Worker ret i64 %sp 12*9880d681SAndroid Build Coastguard Worker} 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdefine void @set_stack(i64 %val) nounwind { 15*9880d681SAndroid Build Coastguard Workerentry: 16*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: set_stack: 17*9880d681SAndroid Build Coastguard Worker; CHECK: movq %rdi, %rsp 18*9880d681SAndroid Build Coastguard Worker call void @llvm.write_register.i64(metadata !0, i64 %val) 19*9880d681SAndroid Build Coastguard Worker; OPT: @llvm.write_register.i64 20*9880d681SAndroid Build Coastguard Worker ret void 21*9880d681SAndroid Build Coastguard Worker} 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerdeclare i64 @llvm.read_register.i64(metadata) nounwind 24*9880d681SAndroid Build Coastguard Workerdeclare void @llvm.write_register.i64(metadata, i64) nounwind 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Worker; register unsigned long current_stack_pointer asm("rsp"); 27*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: .asciz "rsp" 28*9880d681SAndroid Build Coastguard Worker!0 = !{!"rsp\00"} 29