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      1 ; RUN: llc < %s -march=x86-64 -mattr=+mmx | FileCheck %s
      2 
      3 ; CHECK: paddusw
      4 
      5 @R = external global x86_mmx          ; <x86_mmx*> [#uses=1]
      6 
      7 define void @foo(<1 x i64> %A, <1 x i64> %B) {
      8 entry:
      9         %tmp2 = bitcast <1 x i64> %A to x86_mmx
     10         %tmp3 = bitcast <1 x i64> %B to x86_mmx
     11         %tmp7 = tail call x86_mmx @llvm.x86.mmx.paddus.w( x86_mmx %tmp2, x86_mmx %tmp3 )   ; <x86_mmx> [#uses=1]
     12         store x86_mmx %tmp7, x86_mmx* @R
     13         tail call void @llvm.x86.mmx.emms( )
     14         ret void
     15 }
     16 
     17 declare x86_mmx @llvm.x86.mmx.paddus.w(x86_mmx, x86_mmx)
     18 
     19 declare void @llvm.x86.mmx.emms()
     20