Debug mode: 

; 56 for (i = 0; i < SIZE; i++)
  mov  DWORD PTR _i, 0
  jmp  SHORT $L943
$L944:
  mov  eax, DWORD PTR _i
  add  eax, 1
  mov  DWORD PTR _i, eax
$L943:
  cmp  DWORD PTR _i, 10000000  
  jge  SHORT $L945
; 57   x[i] = y[i];
  mov  ecx, DWORD PTR _i
  mov  edx, DWORD PTR _i
  mov  eax, DWORD PTR _y[edx*4]
  mov  DWORD PTR _x[ecx*4], eax
  jmp  SHORT $L944
$L945:

; 70 for (p1 = x, p2 = y; p1 < &x[SIZE]; )
  mov  DWORD PTR _p1, OFFSET FLAT:_x
  mov  DWORD PTR _p2, OFFSET FLAT:_y
$L956:
  cmp  DWORD PTR _p1, OFFSET FLAT:_x+40000000
  jae  SHORT $L957
; 71   *p1++ = *p2++;
  mov  eax, DWORD PTR _p1
  mov  ecx, DWORD PTR _p2
  mov  edx, DWORD PTR [ecx]
  mov  DWORD PTR [eax], edx
  mov  eax, DWORD PTR _p1
  add  eax, 4
  mov  DWORD PTR _p1, eax
  mov  ecx, DWORD PTR _p2
  add  ecx, 4
  mov  DWORD PTR _p2, ecx
  jmp  SHORT $L956
$L957:

; 63 for (p1 = x, p2 = y; p1 - x < SIZE; )
  mov  DWORD PTR _p1, OFFSET FLAT:_x
  mov  DWORD PTR _p2, OFFSET FLAT:_y
$L950:
  mov  eax, DWORD PTR _p1
  sub  eax, OFFSET FLAT:_x
  sar  eax, 2
  cmp  eax, 10000000
  jge  SHORT $L951
; 64   *p1++ = *p2++;
  mov  ecx, DWORD PTR _p1
  mov  edx, DWORD PTR _p2
  mov  eax, DWORD PTR [edx]
  mov  DWORD PTR [ecx], eax
  mov  ecx, DWORD PTR _p1
  add  ecx, 4
  mov  DWORD PTR _p1, ecx
  mov  edx, DWORD PTR _p2
  add  edx, 4
  mov  DWORD PTR _p2, edx
  jmp  SHORT $L950
$L951:

; 77 register int *p1, *p2;
; 78
; 79 for (p1 = x, p2 = y; p1 < &x[SIZE]; )
  mov  DWORD PTR _p1$[ebp], OFFSET FLAT:_x
  mov  DWORD PTR _p2$[ebp], OFFSET FLAT:_y
$L964:
  cmp  DWORD PTR _p1$[ebp], OFFSET FLAT:_x+40000000
  jae  SHORT $L965
; 80   *p1++ = *p2++;
  mov  eax, DWORD PTR _p1$[ebp]
  mov  ecx, DWORD PTR _p2$[ebp]
  mov  edx, DWORD PTR [ecx]
  mov  DWORD PTR [eax], edx
  mov  eax, DWORD PTR _p1$[ebp]
  add  eax, 4
  mov  DWORD PTR _p1$[ebp], eax
  mov  ecx, DWORD PTR _p2$[ebp]
  add  ecx, 4
  mov  DWORD PTR _p2$[ebp], ecx
  jmp  SHORT $L964
$L965:

Release mode: 

; for (i = 0; i < SIZE; i++)
;   x[i] = y[i];
  mov  ecx, 10000000
  mov  esi, OFFSET FLAT:_y
  mov  edi, OFFSET FLAT:_x
  mov  DWORD PTR _i, 10000000
  rep movsd
  pop  edi
  pop  esi

; for (p1 = x, p2 = y; p1 < &x[SIZE]; )
  mov  eax, OFFSET FLAT:_x
  mov  DWORD PTR _p2, OFFSET FLAT:_y
  mov  DWORD PTR _p1, eax
  mov  ecx, 4
$L1013:
;   *p1++ = *p2++;
  mov  edx, DWORD PTR _p2
  mov  edx, DWORD PTR [edx]
  mov  DWORD PTR [eax], edx
  mov  eax, DWORD PTR _p1
  mov  edx, DWORD PTR _p2
  add  eax, ecx
  add  edx, ecx
  cmp  eax, OFFSET FLAT:_x+40000000
  mov  DWORD PTR _p1, eax
  mov  DWORD PTR _p2, edx
  jb  SHORT $L1013

; for (p1 = x, p2 = y; p1 - x < SIZE; )
  xor  ecx, ecx
  mov  eax, OFFSET FLAT:_x
  cmp  ecx, 40000000
  mov  DWORD PTR _p1, eax
  mov  DWORD PTR _p2, OFFSET FLAT:_y
  jge  SHORT $L1008
  mov  ecx, 4
$L1007:
;   *p1++ = *p2++;
  mov  edx, DWORD PTR _p2
  mov  edx, DWORD PTR [edx]
  mov  DWORD PTR [eax], edx
  mov  edx, DWORD PTR _p2
  mov  eax, DWORD PTR _p1
  add  edx, ecx
  add  eax, ecx
  mov  DWORD PTR _p2, edx
  mov  edx, eax
  mov  DWORD PTR _p1, eax
  sub  edx, OFFSET FLAT:_x
  and  edx, -4        
  cmp  edx, 40000000    
  jl  SHORT $L1007
$L1008:

; register int *p1, *p2;
; for (p1 = x, p2 = y; p1 < &x[SIZE]; )
;   *p1++ = *p2++;
  mov  ecx, 10000000    
  mov  esi, OFFSET FLAT:_y
  mov  edi, OFFSET FLAT:_x
  xor  eax, eax
  rep movsd
  pop  edi
  pop  esi
$L1021:
  add  eax, 4
  lea  ecx, DWORD PTR _x[eax]
  cmp  ecx, OFFSET FLAT:_x+40000000
  jb  SHORT $L1021