| ; RUN: llc < %s -mtriple=arm64-linux-gnu | FileCheck %s |
| |
| define i64 @get_stack() nounwind { |
| entry: |
| ; CHECK-LABEL: get_stack: |
| ; CHECK: mov x0, sp |
| %sp = call i64 @llvm.read_register.i64(metadata !0) |
| ret i64 %sp |
| } |
| |
| define void @set_stack(i64 %val) nounwind { |
| entry: |
| ; CHECK-LABEL: set_stack: |
| ; CHECK: mov sp, x0 |
| call void @llvm.write_register.i64(metadata !0, i64 %val) |
| ret void |
| } |
| |
| declare i64 @llvm.read_register.i64(metadata) nounwind |
| declare void @llvm.write_register.i64(metadata, i64) nounwind |
| |
| ; register unsigned long current_stack_pointer asm("sp"); |
| ; CHECK-NOT: .asciz "sp" |
| !0 = !{!"sp\00"} |
