Test of ways of negating a number

negate.asm

	.text
	.align	2
	.global	main
	.type	main, %function
main:
	@ args = 0, pretend = 0, frame = 8
	@ frame_needed = 1, uses_anonymous_args = 0
	@ link register save eliminated.
	str	fp, [sp, #-4]!
	add	fp, sp, #0
	sub	sp, sp, #12
	mov	r3, #0
	str	r3, [fp, #-8]
	b	.L2
.L3:
	ldr	r3, [fp, #-8]
	rsb	r3, r3, #0
	str	r3, [fp, #-12]
	ldr	r3, [fp, #-8]
	add	r3, r3, #1
	str	r3, [fp, #-8]
.L2:
	ldr	r2, [fp, #-8]
	movw	r3, #38527
	movt	r3, 152
	cmp	r2, r3
	ble	.L3
	mov	r3, #0
	mov	r0, r3
	add	sp, fp, #0
	ldmfd	sp!, {fp}
	bx	lr
	.size	main, .-main
	.ident	"GCC: (GNU) 4.7.2"
	.section	.note.GNU-stack,"",%progbits

negate.c

int main() {
	int i;
	int b;
	for (i = 0; i < 10000000; i++) {
		b = 0 - i;
		//b = -1 * i;
	}
	return 0;
}