#  code from compiler, with some comments by Lin
	.file	"swap.c"
	.text
	.globl	swap
	.type	swap, @function
swap:
.LFB0:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movq	%rdi, -24(%rbp)		#saving args on stack (x and y) %rdi = x
	movq	%rsi, -32(%rbp)		#	%rsi = y
	movq	-24(%rbp), %rax		# getting them right back
	movl	(%rax), %eax		#  doing the *x
	movl	%eax, -4(%rbp)		#   temp = *x
	movq	-32(%rbp), %rax
	movl	(%rax), %edx		# %edx = *y
	movq	-24(%rbp), %rax
	movl	%edx, (%rax)		# *x = %edx
	movq	-32(%rbp), %rax
	movl	-4(%rbp), %edx
	movl	%edx, (%rax)		# *x = temp  - Ain't that crazy?
	popq	%rbp			# clean up stack
	.cfi_def_cfa 7, 8
	ret				# what about the %rsp  stack pointer??
	.cfi_endproc
.LFE0:
	.size	swap, .-swap
	.ident	"GCC: (GNU) 4.8.3 20140911 (Red Hat 4.8.3-7)"
	.section	.note.GNU-stack,"",@progbits