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      1 ; RUN: llc < %s | FileCheck %s
      2 target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
      3 target triple = "i386-unknown-linux-code16"
      4 
      5 ; Function Attrs: nounwind
      6 define i32 @main() #0 {
      7   %retval = alloca i32, align 4
      8   store i32 0, i32* %retval, align 4
      9   ret i32 0
     10 }
     11 
     12 ; CHECK: .code16
     13 ; CHECK-LABEL: main
     14 
     15 define i64 @foo(i32 %index) #0 {
     16   %asm = tail call i64 asm "rdmsr", "=A,{cx},~{dirflag},~{fpsr},~{flags}"(i32 %index)
     17   ret i64 %asm
     18 }
     19 
     20 ; CHECK-LABEL: foo
     21 ; CHECK: rdmsr
     22 
     23 attributes #0 = { nounwind }
     24 
     25 !llvm.ident = !{!0}
     26 
     27 !0 = !{!"clang version 3.9.0 (trunk 265439) (llvm/trunk 265567)"}
     28