Loop inside a if statement is identified as an outermost loop

[erizmr]

Describe the bug
The loop inside a if statement is identified as an outermost loop, which is incompatible with the current doc.

According to the current doc, it is the loop at the outermost scope that gets parallelized, not the outermost loop.
https://docs.taichi.graphics/#parallel-for-loops

To Reproduce

import taichi as ti
ti.init()

x = ti.field(dtype=int, shape=())
x[None] = 1

@ti.kernel
def test_break():
    if x[None] > 0:
        for i in range(5):
            x[None] += 1
            break
test_break()

import taichi as ti
ti.init()

@ti.kernel
def test_break_2(x:int):
    if x > 0:
        for i in range(5):
            x = 1
            break
	
test_break_2(2)

Log/Screenshots

[lin-hitonami]

I've spotted it in #4238. I will take a look at the code and determine whether we change the code or the documentation.

[qiao-bo]

Did we change the doc or had a fix already? can we close this issue?

[lin-hitonami]

The outermost loop which is not in the outermost scope is not parallelized. We should change the code to allow break in these loops.