mmxsize.asm

来自「汇编编译器的最新版本的源码.买了自己动手写操作系统这本书的人一定要下」· 汇编 代码 · 共 39 行

ASM
39
字号
;Testname=unoptimized; Arguments=-fbin -ommxsize.bin -O0; Files=stdout stderr mmxsize.bin
;Testname=optimized;   Arguments=-fbin -ommxsize.bin -Ox; Files=stdout stderr mmxsize.bin
	bits 32
	movd mm0,eax
	movd mm0,[foo]
	movq mm0,[foo]
	movd mm0,dword [foo]
	movq mm0,qword [foo]
	movmskps eax,xmm1
	movmskpd eax,xmm1
	nop
	movd xmm0,eax
	movd xmm0,[foo]
	movq xmm0,[foo]
	movd xmm0,dword [foo]
	movq xmm0,qword [foo]
	nop

	bits 64
	movd mm0,eax
	movq mm0,[foo]
	movd mm0,dword [foo]
	movq mm0,qword [foo]
	movq mm0,rax
	movmskps eax,xmm1
	movmskpd eax,xmm1
	nop
	movd xmm0,eax
	movq xmm0,[foo]
	movd xmm0,dword [foo]
	movq xmm0,qword [foo]
	movq xmm0,rax
	movmskps rax,xmm1
	movmskpd rax,xmm1
	nop
	
	section .bss
foo	resq 1

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