Number of branches reported by perf stat not equal to real number of test command

I test a simple program via perf stat

#include <cassert>
#include <cstddef>
#include <iostream>

int main(int argc, const char* argv[]) {
    assert(argc == 3);
    int64_t iters = atoll(argv[1]);
    int64_t step = atoll(argv[2]);

    int64_t value = 0;

    for(int64_t i = 0; i < iters; ++i) {
        value += step;
    }
    std::cout << value << std::endl;

    return 0;
}

Easy to see in godbolt (https://godbolt.org/z/d831q1c9W) that there is only one repeated branch according to the cycle (jge .LBB0_4 by link, i guess)

The command to build I use is

clang++ -std=c++2b bp.cpp tp2.cpp -o bp.exe -Wall -O0 -DNDEBUG

If I run

perf stat ./bp.exe 10000000 700 500 1013 2>&1 | grep branches | tee run4_1.txt
perf stat ./bp.exe 20000000 700 500 1013 2>&1 | grep branches | tee run4_2.txt
perf stat ./bp.exe 30000000 700 500 1013 2>&1 | grep branches | tee run4_3.txt

It outputs:

+ perf stat ./bp_arc.exe 10000000 700
+ grep branches
+ tee run4_1_arc.txt
          15516156      branches:u                #  483.498 M/sec                    (66.64%)
              4390      branch-misses:u           #    0.03% of all branches          (63.53%)
+ perf stat ./bp_arc.exe 20000000 700
+ grep branches
+ tee run4_2_arc.txt
          30860233      branches:u                #  534.704 M/sec                    (67.69%)
              6400      branch-misses:u           #    0.02% of all branches          (65.99%)
+ perf stat ./bp_arc.exe 30000000 700
+ grep branches
+ tee run4_3_arc.txt
          47616449      branches:u                #  535.042 M/sec                    (67.21%)
              6531      branch-misses:u           #    0.01% of all branches          (66.81%)

So, number of branches reported by perf stat is in ~1.5 greater than the actual number of iterations.

In some other setup I see numbers with multiplier about 2.1.

So the question: what kind of branches is reported by perf stat -> branches counters, that reasons of difference between number of checks (tests) visibly in asm and reported counters.