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