25 lines
609 B
LLVM
25 lines
609 B
LLVM
|
; 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"}
|