in order to understand what happens I used a sample code which is :

#include <stdio.h>
int main()
{
  for(int i=0;i<5;i  )
  {
      int a=i;
      printf("a=%x\n",&a);
  }

    return 0;
}

and I generated assembly file produced by gcc using this command line gcc -fverbose-asm main1.c -S -o main1.s. and here is the file output :

        .file   "main1.c"
 # GNU C17 (MinGW.org GCC Build-2) version 9.2.0 (mingw32)
 #  compiled by GNU C version 9.2.0, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.21-GMP

 # GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 # options passed:  -iprefix c:\mingw\bin\../lib/gcc/mingw32/9.2.0/ main1.c
 # -mtune=generic -march=i586 -auxbase-strip main1.s -fverbose-asm
 # options enabled:  -faggressive-loop-optimizations -fassume-phsa
 # -fasynchronous-unwind-tables -fauto-inc-dec -fcommon
 # -fdelete-null-pointer-checks -fdwarf2-cfi-asm -fearly-inlining
 # -feliminate-unused-debug-types -ffp-int-builtin-inexact -ffunction-cse
 # -fgcse-lm -fgnu-runtime -fgnu-unique -fident -finline-atomics
 # -fipa-stack-alignment -fira-hoist-pressure -fira-share-save-slots
 # -fira-share-spill-slots -fivopts -fkeep-inline-dllexport
 # -fkeep-static-consts -fleading-underscore -flifetime-dse
 # -flto-odr-type-merging -fmath-errno -fmerge-debug-strings -fpeephole
 # -fplt -fprefetch-loop-arrays -freg-struct-return
 # -fsched-critical-path-heuristic -fsched-dep-count-heuristic
 # -fsched-group-heuristic -fsched-interblock -fsched-last-insn-heuristic
 # -fsched-rank-heuristic -fsched-spec -fsched-spec-insn-heuristic
 # -fsched-stalled-insns-dep -fschedule-fusion -fsemantic-interposition
 # -fset-stack-executable -fshow-column -fshrink-wrap-separate
 # -fsigned-zeros -fsplit-ivs-in-unroller -fssa-backprop -fstdarg-opt
 # -fstrict-volatile-bitfields -fsync-libcalls -ftrapping-math
 # -ftree-cselim -ftree-forwprop -ftree-loop-if-convert -ftree-loop-im
 # -ftree-loop-ivcanon -ftree-loop-optimize -ftree-parallelize-loops=
 # -ftree-phiprop -ftree-reassoc -ftree-scev-cprop -funit-at-a-time
 # -funwind-tables -fverbose-asm -fzero-initialized-in-bss -m32 -m80387
 # -m96bit-long-double -maccumulate-outgoing-args -malign-double
 # -malign-stringops -mavx256-split-unaligned-load
 # -mavx256-split-unaligned-store -mfancy-math-387 -mfp-ret-in-387
 # -mieee-fp -mlong-double-80 -mms-bitfields -mno-red-zone -mno-sse4
 # -mpush-args -msahf -mstack-arg-probe -mstv -mvzeroupper

    .text
    .def    ___main;    .scl    2;  .type   32; .endef
    .section .rdata,"dr"
LC0:
    .ascii "a=%x\12\0"
    .text
    .globl  _main
    .def    _main;  .scl    2;  .type   32; .endef
_main:
LFB13:
    .cfi_startproc
    pushl