#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int fscanf(int /*<<< orphan*/ *, char *, int *);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  FILE *fp;
  int num;
  if (argc < 2) {
    printf("Filename is missing\n");
    exit(1);
  }
  fp = fopen(argv[1], "r");
  if (fp == 0) {
    printf("Could not open file\n");
    exit(2);
  }
  printf("\nFollowing are the numbers stored in file in text form\n\n");
  while (fscanf(fp, "%d", &num) == 1) {
    printf("%d\n", num);
  }
  printf("\n");
  fclose(fp);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x2,-0x8(%rbp)
jge    1188 <main+0x38>
lea    0xe89(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
lea    0xe7e(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    11c3 <main+0x73>
lea    0xe65(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    $0x2,%edi
call   1070 <exit@plt>
lea    0xe62(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x18(%rbp),%rdi
lea    0xe89(%rip),%rsi
lea    -0x1c(%rbp),%rdx
call   1050 <fscanf@plt>
cmp    $0x1,%eax
jne    1204 <main+0xb4>
mov    -0x1c(%rbp),%esi
lea    0xe70(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
jmp    11d1 <main+0x81>
lea    0xe58(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
cmp    $0x1,%edi
jle    1221 <main+0xb1>
mov    0x8(%rsi),%rdi
lea    0xe74(%rip),%rsi
call   1080 <fopen@plt>
test   %rax,%rax
je     1237 <main+0xc7>
mov    %rax,%rbx
lea    0xe65(%rip),%rdi
call   1040 <puts@plt>
lea    0xe52(%rip),%rsi
lea    0x4(%rsp),%rdx
mov    %rbx,%rdi
call   1070 <fscanf@plt>
cmp    $0x1,%eax
jne    1201 <main+0x91>
lea    0xe3c(%rip),%r14
lea    0xe32(%rip),%r15
lea    0x4(%rsp),%r12
cs nopw 0x0(%rax,%rax,1)
nop
mov    0x4(%rsp),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1060 <printf@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
mov    %r12,%rdx
call   1070 <fscanf@plt>
cmp    $0x1,%eax
je     11e0 <main+0x70>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    %rbx,%rdi
call   1050 <fclose@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret
lea    0xe2d(%rip),%rdi
call   1040 <puts@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
lea    0xe03(%rip),%rdi
call   1040 <puts@plt>
mov    $0x2,%edi
call   1090 <exit@plt>

LLVM IR (-O0):
@.str = [21 x i8] c"Filename is missing\0A\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [21 x i8] c"Could not open file\0A\00"
@.str.3 = [57 x i8] c"\0AFollowing are the numbers stored in file in text form\0A\0A\00"
@.str.4 = [3 x i8] c"%d\00"
@.str.5 = [4 x i8] c"%d\0A\00"
@.str.6 = [2 x i8] c"\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32*
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp slt i32 %8, 2
br i1 %9, label %10, label %13
10: ; preds = %2
%11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%12 = call i32 @exit(i32 1)
unreachable
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i32* @fopen(i8* %16, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %17, i32** %6
%18 = load i32*, i32** %6
%19 = icmp eq i32* %18, null
br i1 %19, label %20, label %23
20: ; preds = %13
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
%22 = call i32 @exit(i32 2)
unreachable
23: ; preds = %13
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str.3, i64 0, i64 0))
br label %25
25: ; preds = %29, %23
%26 = load i32*, i32** %6
%27 = call i32 @fscanf(i32* %26, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %7)
%28 = icmp eq i32 %27, 1
br i1 %28, label %29, label %32
29: ; preds = %25
%30 = load i32, i32* %7
%31 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 %30)
br label %25
32: ; preds = %25
%33 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.6, i64 0, i64 0))
%34 = load i32*, i32** %6
%35 = call i32 @fclose(i32* %34)
%36 = load i32, i32* %3
ret i32 %36
}

LLVM IR (-O2):
@.str.1 = [2 x i8] c"r\00"
@.str.4 = [3 x i8] c"%d\00"
@.str.5 = [4 x i8] c"%d\0A\00"
@str = [56 x i8] c"\0AFollowing are the numbers stored in file in text form\0A\00"
@str.7 = [20 x i8] c"Could not open file\00"
@str.8 = [20 x i8] c"Filename is missing\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca i32
%4 = bitcast i32* %3 to i8*
%5 = icmp slt i32 %0, 2
br i1 %5, label %6, label %9
6: ; preds = %2
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str.8, i64 0, i64 0))
%8 = tail call i32 @exit(i32 1)
unreachable
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = tail call i32* @fopen(i8* %11, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%13 = icmp eq i32* %12, null
br i1 %13, label %14, label %17
14: ; preds = %9
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str.7, i64 0, i64 0))
%16 = tail call i32 @exit(i32 2)
unreachable
17: ; preds = %9
%18 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([56 x i8], [56 x i8]* @str, i64 0, i64 0))
%19 = call i32 @fscanf(i32* %12, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %3)
%20 = icmp eq i32 %19, 1
br i1 %20, label %21, label %26
21: ; preds = %17, %21
%22 = load i32, i32* %3
%23 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0), i32 %22)
%24 = call i32 @fscanf(i32* %12, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0), i32* %3)
%25 = icmp eq i32 %24, 1
br i1 %25, label %21, label %26
26: ; preds = %21, %17
%27 = call i32 @putchar(i32 10)
%28 = call i32 @fclose(i32* %12)
ret i32 0
}