// finding out array access computations
// cl /FatestArrayEfficiency.asm testArrayEfficiency.cpp

void main()
{
    int x[5][10];

    x[2][3] = 10;           // one memory access
    *(*(x+2)+3) = 20;       // completely the same as above    
    *((int *)(x+2)+3) = 30; // completely the same as above

    // x --> int (*)[10]
    // x[2] --> int *
    // &x[2] --> int (*)[10]
    // x[2][3] --> int
    // &x[2][3] --> int *
    
    int i, **y;
    y = new int *[5];
    for (i=0; i<5; i++)
        y[i] = new int[10];

    y[2][3] = 10;           // three memory access
    *(*(y+2)+3) = 20;       // completely the same as above    
    *((int *)(y+2)+3) = 30; // completely the same as above

    for (i=0; i<5; i++)
        delete[] y[i];
    delete[] y;
}
/*
	TITLE	testArrayEfficiency.cpp
	.386P
include listing.inc
if @Version gt 510
.model FLAT
else
_TEXT	SEGMENT PARA USE32 PUBLIC 'CODE'
_TEXT	ENDS
_DATA	SEGMENT DWORD USE32 PUBLIC 'DATA'
_DATA	ENDS
CONST	SEGMENT DWORD USE32 PUBLIC 'CONST'
CONST	ENDS
_BSS	SEGMENT DWORD USE32 PUBLIC 'BSS'
_BSS	ENDS
_TLS	SEGMENT DWORD USE32 PUBLIC 'TLS'
_TLS	ENDS
FLAT	GROUP _DATA, CONST, _BSS
	ASSUME	CS: FLAT, DS: FLAT, SS: FLAT
endif
PUBLIC	_main
EXTRN	??2@YAPAXI@Z:NEAR				; operator new
EXTRN	??3@YAXPAX@Z:NEAR				; operator delete
_TEXT	SEGMENT
_x$ = -200
_i$ = -208
_y$ = -204
$T287 = -212
$T288 = -216
$T289 = -220
$T290 = -224
_main	PROC NEAR
; File testArray1.cpp
; Line 5
	push	ebp
	mov	ebp, esp
	sub	esp, 224				; 000000e0H
; Line 8   x[2][3]
	mov	DWORD PTR _x$[ebp+92], 10		; 0000000aH    92=(2*10+3)*4
; Line 9
	mov	DWORD PTR _x$[ebp+92], 20		; 00000014H
; Line 10
	mov	DWORD PTR _x$[ebp+92], 30		; 0000001eH
; Line 19
	push	20					; 00000014H
	call	??2@YAPAXI@Z				; operator new
	add	esp, 4
	mov	DWORD PTR $T287[ebp], eax
	mov	eax, DWORD PTR $T287[ebp]
	mov	DWORD PTR _y$[ebp], eax
; Line 20
	mov	DWORD PTR _i$[ebp], 0
	jmp	SHORT $L273
$L274:
	mov	ecx, DWORD PTR _i$[ebp]
	add	ecx, 1
	mov	DWORD PTR _i$[ebp], ecx
$L273:
	cmp	DWORD PTR _i$[ebp], 5
	jge	SHORT $L275
; Line 21
	push	40					; 00000028H
	call	??2@YAPAXI@Z				; operator new
	add	esp, 4
	mov	DWORD PTR $T288[ebp], eax
	mov	edx, DWORD PTR _i$[ebp]
	mov	eax, DWORD PTR _y$[ebp]
	mov	ecx, DWORD PTR $T288[ebp]
	mov	DWORD PTR [eax+edx*4], ecx
	jmp	SHORT $L274
$L275:
; Line 23      y[2][3]
	mov	edx, DWORD PTR _y$[ebp]
	mov	eax, DWORD PTR [edx+8]          ;                 8=2*4
	mov	DWORD PTR [eax+12], 10			; 0000000aH      12=3*4
; Line 24
	mov	ecx, DWORD PTR _y$[ebp]
	mov	edx, DWORD PTR [ecx+8]
	mov	DWORD PTR [edx+12], 20			; 00000014H
; Line 25
	mov	eax, DWORD PTR _y$[ebp]
	mov	DWORD PTR [eax+20], 30			; 0000001eH
; Line 27
	mov	DWORD PTR _i$[ebp], 0
	jmp	SHORT $L279
$L280:
	mov	ecx, DWORD PTR _i$[ebp]
	add	ecx, 1
	mov	DWORD PTR _i$[ebp], ecx
$L279:
	cmp	DWORD PTR _i$[ebp], 5
	jge	SHORT $L281
; Line 28
	mov	edx, DWORD PTR _i$[ebp]
	mov	eax, DWORD PTR _y$[ebp]
	mov	ecx, DWORD PTR [eax+edx*4]
	mov	DWORD PTR $T289[ebp], ecx
	mov	edx, DWORD PTR $T289[ebp]
	push	edx
	call	??3@YAXPAX@Z				; operator delete
	add	esp, 4
	jmp	SHORT $L280
$L281:
; Line 29
	mov	eax, DWORD PTR _y$[ebp]
	mov	DWORD PTR $T290[ebp], eax
	mov	ecx, DWORD PTR $T290[ebp]
	push	ecx
	call	??3@YAXPAX@Z				; operator delete
	add	esp, 4
; Line 30
	mov	esp, ebp
	pop	ebp
	ret	0
_main	ENDP
_TEXT	ENDS
END
*/