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      1 ; RUN: llc < %s -mtriple=i386-apple-darwin -mattr=+mmx | grep mm0 | count 1
      2 ; RUN: llc < %s -mtriple=i386-apple-darwin -mattr=+mmx | grep esp | count 2
      3 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+mmx,+sse2 | grep xmm0
      4 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+mmx,+sse2 | grep rdi
      5 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+mmx,+sse2 | not grep movups
      6 ;
      7 ; On Darwin x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].
      8 ; On Darwin x86-32, v1i64 values are passed in memory.  In this example, they
      9 ;                   are never moved into an MM register at all.
     10 ; On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].
     11 ; On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.
     12 
     13 @u1 = external global x86_mmx
     14 
     15 define void @t1(x86_mmx %v1) nounwind  {
     16 	store x86_mmx %v1, x86_mmx* @u1, align 8
     17 	ret void
     18 }
     19 
     20 @u2 = external global x86_mmx
     21 
     22 define void @t2(<1 x i64> %v1) nounwind  {
     23         %tmp = bitcast <1 x i64> %v1 to x86_mmx
     24 	store x86_mmx %tmp, x86_mmx* @u2, align 8
     25 	ret void
     26 }
     27 
     28