demo.go

package main

import (
	"fmt"
)

func Absdiff1(x, y int) int {
	if x > y {
		return x - y
	}
	return y - x
}

func Absdiff2(x, y int) int {
	rval := y - x
	eval := x - y
	etest := x > y
	if etest {
		rval = eval
	}
	return rval
}

func main() {
	fmt.Print(Absdiff1(1, 2))
	fmt.Print(Absdiff2(1, 2))
}

_main.Absdiff1:
00000000010936a0	cmpq	%rax, %rbx
00000000010936a3	jge	0x10936a9
00000000010936a5	subq	%rbx, %rax
00000000010936a8	retq
00000000010936a9	subq	%rax, %rbx
00000000010936ac	movq	%rbx, %rax
00000000010936af	retq

_main.Absdiff2:
00000000010936c0	movq	%rbx, %rcx
00000000010936c3	subq	%rax, %rbx
00000000010936c6	movq	%rax, %rdx
00000000010936c9	subq	%rcx, %rax
00000000010936cc	cmpq	%rdx, %rcx
00000000010936cf	cmovlq	%rax, %rbx
00000000010936d3	movq	%rbx, %rax
00000000010936d6	retq