Intel ARCHITECTURE IA-32 User Manual

Optimizing Cache Usage 6
6-51
prefetch_loop:
movaps xmm0, [esi+ecx]
movaps xmm0, [esi+ecx+64]
add ecx,128
cmp ecx,BLOCK_SIZE
jne prefetch_loop
xor ecx,ecx
align 16
cpy_loop:
movdqa xmm0,[esi+ecx]
movdqa xmm1,[esi+ecx+16]
movdqa xmm2,[esi+ecx+32]
movdqa xmm3,[esi+ecx+48]
movdqa xmm4,[esi+ecx+64]
movdqa xmm5,[esi+ecx+16+64]
movdqa xmm6,[esi+ecx+32+64]
movdqa xmm7,[esi+ecx+48+64]
movntdq [edi+ecx],xmm0
movntdq [edi+ecx+16],xmm1
movntdq [edi+ecx+32],xmm2
movntdq [edi+ecx+48],xmm3
movntdq [edi+ecx+64],xmm4
movntdq [edi+ecx+80],xmm5
movntdq [edi+ecx+96],xmm6
movntdq [edi+ecx+112],xmm7
add ecx,128
cmp ecx,BLOCK_SIZE
jne cpy_loop

Intel ARCHITECTURE IA-32 Specifications

General

Instruction Set	x86
Instruction Set Type	CISC
Memory Segmentation	Supported
Operating Modes	Real mode, Protected mode, Virtual 8086 mode
Max Physical Address Size	36 bits (with PAE)
Max Virtual Address Size	32 bits
Architecture	IA-32 (Intel Architecture 32-bit)
Addressable Memory	4 GB (with Physical Address Extension up to 64 GB)
Floating Point Registers	8 x 80-bit
MMX Registers	8 x 64-bit
SSE Registers	8 x 128-bit
Registers	General-purpose registers (EAX, EBX, ECX, EDX, ESI, EDI, ESP, EBP), Segment registers (CS, DS, SS, ES, FS, GS), Instruction pointer (EIP), Flags register (EFLAGS)
Floating Point Unit	Yes (x87)