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      1 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64
      2 ; X64-NOT:     movsq
      3 ; X64:     rep
      4 ; X64-NOT:     rep
      5 ; X64:     movsq
      6 ; X64-NOT:     movsq
      7 ; X64:     rep
      8 ; X64-NOT:     rep
      9 ; X64:     movsq
     10 ; X64-NOT:     rep
     11 ; X64-NOT:     movsq
     12 
     13 ; Win64 has not supported byval yet.
     14 
     15 ; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X32
     16 ; X32-NOT:     movsl
     17 ; X32:     rep
     18 ; X32-NOT:     rep
     19 ; X32:     movsl
     20 ; X32-NOT:     movsl
     21 ; X32:     rep
     22 ; X32-NOT:     rep
     23 ; X32:     movsl
     24 ; X32-NOT:     rep
     25 ; X32-NOT:     movsl
     26 
     27 %struct.s = type { i32, i32, i32, i32, i32, i32, i32, i32,
     28                    i32, i32, i32, i32, i32, i32, i32, i32,
     29                    i32, i32, i32, i32, i32, i32, i32, i32,
     30                    i32, i32, i32, i32, i32, i32, i32, i32,
     31                    i32 }
     32 
     33 define void @g(i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6) nounwind {
     34 entry:
     35         %d = alloca %struct.s, align 16
     36         %tmp = getelementptr %struct.s* %d, i32 0, i32 0
     37         store i32 %a1, i32* %tmp, align 16
     38         %tmp2 = getelementptr %struct.s* %d, i32 0, i32 1
     39         store i32 %a2, i32* %tmp2, align 16
     40         %tmp4 = getelementptr %struct.s* %d, i32 0, i32 2
     41         store i32 %a3, i32* %tmp4, align 16
     42         %tmp6 = getelementptr %struct.s* %d, i32 0, i32 3
     43         store i32 %a4, i32* %tmp6, align 16
     44         %tmp8 = getelementptr %struct.s* %d, i32 0, i32 4
     45         store i32 %a5, i32* %tmp8, align 16
     46         %tmp10 = getelementptr %struct.s* %d, i32 0, i32 5
     47         store i32 %a6, i32* %tmp10, align 16
     48         call void @f( %struct.s* byval %d)
     49         call void @f( %struct.s* byval %d)
     50         ret void
     51 }
     52 
     53 declare void @f(%struct.s* byval)
     54