win64cc-backup-x18.ll
923 Bytes
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;; Testing that x18 is backed up and restored, and that x29 (if used) still
;; points to the x29,x30 pair on the stack.
; RUN: llc < %s -mtriple=aarch64-linux-gnu --frame-pointer=non-leaf | FileCheck %s
; RUN: llc < %s -mtriple=aarch64-linux-gnu --frame-pointer=non-leaf -mattr=+reserve-x18 | FileCheck %s
declare dso_local void @other()
define dso_local win64cc void @func() #0 {
; CHECK-LABEL: func:
; CHECK: // %bb.0: // %entry
; CHECK-NEXT: stp x29, x30, [sp, #-32]! // 16-byte Folded Spill
; CHECK-NEXT: str x18, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT: mov x29, sp
; CHECK-NEXT: bl other
; CHECK-NEXT: ldr x18, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT: ldp x29, x30, [sp], #32 // 16-byte Folded Reload
; CHECK-NEXT: ret
entry:
tail call void @other()
ret void
}
attributes #0 = { nounwind }