|  | ; RUN: llc < %s -mtriple=i686-pc-win32   | FileCheck -check-prefix=CHECK -check-prefix=WIN32 %s | 
|  | ; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck -check-prefix=CHECK -check-prefix=WIN64 %s | 
|  | ; RUN: llc < %s -mtriple=i386-linux-gnu  | FileCheck -check-prefix=LINUX %s | 
|  |  | 
|  | target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" | 
|  | target triple = "i686-pc-windows-msvc18.0.0" | 
|  |  | 
|  | ; Don't emit empty functions on Windows; it can lead to duplicate entries | 
|  | ; (multiple functions sharing the same RVA) in the Guard CF Function Table which | 
|  | ; the kernel refuses to load. | 
|  |  | 
|  | define void @f() { | 
|  | entry: | 
|  | unreachable | 
|  |  | 
|  | ; CHECK-LABEL: f: | 
|  | ; WIN32: nop | 
|  | ; WIN64: ud2 | 
|  | ; LINUX-NOT: nop | 
|  | ; LINUX-NOT: ud2 | 
|  |  | 
|  | } |