error messange error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’
__asm__ (       
		"loop:\n\t"
		"movl	$1,%3\n\t"
		"movl	$0, %6\n"
		"start:\n\t"
		
		"movl	(%1,%3,4),%4\n\t"		
		"movl	-4(%1, %3, 4), %5\n\t"	
		"cmpl	%4, %5\n\t"			
		"jle	next\n\t"

		"xchgl	%4, %5\n\t"		
		"movl	%4, (%1, %3, 4)\n\t"	
		"movl	%5, -4(%1, %3, 4)\n\t"	
		"movl	$1, %6\n"

		"next:\n\t"
		"incl	%3\n\t"	
		
		"cmpl	%3, %2\n\t" 
		"jge	start\n\t"	

		"cmpl	$0, %6\n\t"
		"je	end\n\t"

		"jmp	loop\n"	
		"end:    \n\t"
	

	:"=r"(input_array)
	:"r"(input_array), "r"(size-1), "r"(1), "r"(0), "r"(0), "r"(0)
	
	);


i get a 

error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’ error: ‘asm’ operand has impossible constraints

error messange error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’
===

__asm__ (       
		"loop:\n\t"
		"movl	$1,%3\n\t"
		"movl	$0, %6\n"
		"start:\n\t"
		
		"movl	(%1,%3,4),%4\n\t"		
		"movl	-4(%1, %3, 4), %5\n\t"	
		"cmpl	%4, %5\n\t"			
		"jle	next\n\t"

		"xchgl	%4, %5\n\t"		
		"movl	%4, (%1, %3, 4)\n\t"	
		"movl	%5, -4(%1, %3, 4)\n\t"	
		"movl	$1, %6\n"

		"next:\n\t"
		"incl	%3\n\t"	
		
		"cmpl	%3, %2\n\t" 
		"jge	start\n\t"	

		"cmpl	$0, %6\n\t"
		"je	end\n\t"

		"jmp	loop\n"	
		"end:    \n\t"
	

	:"=r"(input_array)
	:"r"(input_array), "r"(size-1), "r"(1), "r"(0), "r"(0), "r"(0)
	
	);


i get a 

error: can't find a register in class ‘GENERAL_REGS’ while reloading ‘asm’ error: ‘asm’ operand has impossible constraints
