blob: 581faf130f10337a077d8646d5534a3da59c7231 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
; 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 = metadata !{metadata !"sp\00"}
|
