#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ print_atoi(char *);
int /*<<< orphan*/ printf(char *);
int main(void) {
  printf("     string  atoi sscanf\n");
  printf("-----------------------------\n");
  print_atoi("-123");
  print_atoi("0");
  print_atoi("123");
  print_atoi("AS Roma");
  print_atoi(NULL);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xed8(%rip),%rdi
call   1030 <printf@plt>
lea    0xeeb(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xee4(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xed4(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xece(%rip),%rdi
call   1040 <print_atoi@plt>
xor    %eax,%eax
mov    %eax,%edi
call   1040 <print_atoi@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xee7(%rip),%rdi
call   1030 <puts@plt>
lea    0xef4(%rip),%rdi
call   1030 <puts@plt>
lea    0xec0(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xeb9(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xea9(%rip),%rdi
call   1040 <print_atoi@plt>
lea    0xea3(%rip),%rdi
call   1040 <print_atoi@plt>
xor    %edi,%edi
call   1040 <print_atoi@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [26 x i8] c" string atoi sscanf\0A\00"
@.str.1 = [31 x i8] c"-----------------------------\0A\00"
@.str.2 = [5 x i8] c"-123\00"
@.str.3 = [2 x i8] c"0\00"
@.str.4 = [4 x i8] c"123\00"
@.str.5 = [8 x i8] c"AS Roma\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @print_atoi(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @print_atoi(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @print_atoi(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @print_atoi(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.5, i64 0, i64 0))
%8 = call i32 @print_atoi(i8* null)
ret i32 0
}

LLVM IR (-O2):
@.str.2 = [5 x i8] c"-123\00"
@.str.3 = [2 x i8] c"0\00"
@.str.4 = [4 x i8] c"123\00"
@.str.5 = [8 x i8] c"AS Roma\00"
@str = [25 x i8] c" string atoi sscanf\00"
@str.6 = [30 x i8] c"-----------------------------\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str.6, i64 0, i64 0))
%3 = tail call i32 @print_atoi(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 @print_atoi(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%5 = tail call i32 @print_atoi(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%6 = tail call i32 @print_atoi(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.5, i64 0, i64 0))
%7 = tail call i32 @print_atoi(i8* null)
ret i32 0
}