target  : (0,0x87) IStFPR4
status  : emitted
from    : discovery snippet 'st_byref_R4' (minimised)

' ---- modProbe.bas
Option Explicit

Public Sub Main()
  Dim a As Single
End Sub

Sub P(x As Single)
  Dim b As Single
  b = x
  x = b
End Sub

target disasm lines:
  modProbe.Proc_401490 | 401499    87 0C00               IStFPR4 arg_C
