#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*/ ouverture(char *, char *);
int main(void) {
  ouverture("/etc/inittab", "r");
  ouverture("/etc/inittab", "w");
  ouverture("essai.fopen", "r");
  ouverture("essai.fopen", "w");
  ouverture("essai.fopen", "r");
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeda(%rip),%rdi
lea    0xee0(%rip),%rsi
call   1030 <ouverture@plt>
lea    0xec7(%rip),%rdi
lea    0xecf(%rip),%rsi
call   1030 <ouverture@plt>
lea    0xec5(%rip),%rdi
lea    0xeba(%rip),%rsi
call   1030 <ouverture@plt>
lea    0xeb2(%rip),%rdi
lea    0xea9(%rip),%rsi
call   1030 <ouverture@plt>
lea    0xe9f(%rip),%rdi
lea    0xe94(%rip),%rsi
call   1030 <ouverture@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
lea    0xee4(%rip),%rbx
lea    0xeea(%rip),%r14
mov    %rbx,%rdi
mov    %r14,%rsi
call   1030 <ouverture@plt>
lea    0xeda(%rip),%r15
mov    %rbx,%rdi
mov    %r15,%rsi
call   1030 <ouverture@plt>
lea    0xeca(%rip),%rbx
mov    %rbx,%rdi
mov    %r14,%rsi
call   1030 <ouverture@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
call   1030 <ouverture@plt>
mov    %rbx,%rdi
mov    %r14,%rsi
call   1030 <ouverture@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [13 x i8] c"/etc/inittab\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [2 x i8] c"w\00"
@.str.3 = [12 x i8] c"essai.fopen\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @ouverture(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @ouverture(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%6 = call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [13 x i8] c"/etc/inittab\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [2 x i8] c"w\00"
@.str.3 = [12 x i8] c"essai.fopen\00"
define i32 @main() {
%1 = tail call i32 @ouverture(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%2 = tail call i32 @ouverture(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%3 = tail call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%5 = tail call i32 @ouverture(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
ret i32 0
}