compile time optimization.cpp

==================================
CODE:
==================================

static int heavy(unsigned int a) {
	int accum = 0;
	for(unsigned int i = 0; i < a + 10; i++)
		accum += i * i + i * 4 - i / 2;
	return accum;
}

int optimized(unsigned int a) {
	if(a > 3) return 3;
	return heavy(a);
}

int main(int argc, char** argv) {
	return optimized(argc);
}

==================================
AND ASSEMBLY:
==================================

	.file	"a.cpp"
	.text
	.p2align 4,,15
	.globl	_Z9optimizedj
	.def	_Z9optimizedj;	.scl	2;	.type	32;	.endef
	.seh_proc	_Z9optimizedj
_Z9optimizedj:
.LFB1:
	.seh_endprologue
	movl	$3, %eax
	cmpl	$3, %ecx
	jbe	.L9
	rep ret
	.p2align 4,,10
.L9:
	addl	$10, %ecx
	cmpl	$10, %ecx
	jbe	.L5
	cmpl	$11, %ecx
	.p2align 4,,2
	jbe	.L6
	cmpl	$13, %ecx
	sbbl	%eax, %eax
	andb	$70, %al
	addl	$926, %eax
	ret
	.p2align 4,,10
.L5:
	movl	$445, %eax
	ret
	.p2align 4,,10
.L6:
	movl	$580, %eax
	ret
	.seh_endproc
	.def	__main;	.scl	2;	.type	32;	.endef
	.section	.text.startup,"x"
	.p2align 4,,15
	.globl	main
	.def	main;	.scl	2;	.type	32;	.endef
	.seh_proc	main
main:
.LFB2:
	pushq	%rbx
	.seh_pushreg	%rbx
	subq	$32, %rsp
	.seh_stackalloc	32
	.seh_endprologue
	movl	%ecx, %ebx
	call	__main
	cmpl	$3, %ebx
	movl	$3, %eax
	jbe	.L17
.L11:
	addq	$32, %rsp
	popq	%rbx
	ret
.L17:
	addl	$10, %ebx
	cmpl	$10, %ebx
	jbe	.L14
	cmpl	$11, %ebx
	jbe	.L15
	cmpl	$13, %ebx
	sbbl	%eax, %eax
	andb	$70, %al
	addl	$926, %eax
	jmp	.L11
.L14:
	movl	$445, %eax
	jmp	.L11
.L15:
	movl	$580, %eax
	jmp	.L11
	.seh_endproc
	.ident	"GCC: (rev5, Built by MinGW-W64 project) 4.8.1"