#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*/ SEEK_END;
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
long long ftell(int /*<<< orphan*/ *);
int /*<<< orphan*/ printf(char *, char *);
long long GetFileSize(char *fname) {
  long long fsize;
  FILE *fin = fopen(fname, "rb");
  if (fin == NULL) {
    printf("ERROR: file not found! %s\n", fname);
    exit(1);
  }
  fseek(fin, 0, SEEK_END);
  fsize = ftell(fin);
  fclose(fin);
  return fsize;
}


x86 assembly (clang, -O0):
<GetFileSize>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe89(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    11a5 <GetFileSize+0x45>
mov    -0x8(%rbp),%rsi
lea    0xe6d(%rip),%rdi
call   1040 <printf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>
mov    -0x18(%rbp),%rdi
mov    0x2e38(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1060 <fseek@plt>
mov    -0x18(%rbp),%rdi
call   1050 <ftell@plt>
mov    %rax,-0x10(%rbp)
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x10(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<GetFileSize>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%r14
lea    0xe92(%rip),%rsi
call   1070 <fopen@plt>
test   %rax,%rax
je     11ac <GetFileSize+0x4c>
mov    %rax,%rbx
mov    0x2e66(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1060 <fseek@plt>
mov    %rbx,%rdi
call   1050 <ftell@plt>
mov    %rax,%r14
mov    %rbx,%rdi
call   1030 <fclose@plt>
mov    %r14,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret
lea    0xe50(%rip),%rdi
mov    %r14,%rsi
call   1040 <printf@plt>
mov    $0x1,%edi
call   1080 <exit@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@.str.1 = [27 x i8] c"ERROR: file not found! %s\0A\00"
@SEEK_END = global i32 0
define i64 @GetFileSize(i8* %0) {
%2 = alloca i8*
%3 = alloca i64
%4 = alloca i32*
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %6, i32** %4
%7 = load i32*, i32** %4
%8 = icmp eq i32* %7, null
br i1 %8, label %9, label %13
9: ; preds = %1
%10 = load i8*, i8** %2
%11 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.1, i64 0, i64 0), i8* %10)
%12 = call i32 @exit(i32 1)
unreachable
13: ; preds = %1
%14 = load i32*, i32** %4
%15 = load i32, i32* @SEEK_END
%16 = call i32 @fseek(i32* %14, i32 0, i32 %15)
%17 = load i32*, i32** %4
%18 = call i64 @ftell(i32* %17)
store i64 %18, i64* %3
%19 = load i32*, i32** %4
%20 = call i32 @fclose(i32* %19)
%21 = load i64, i64* %3
ret i64 %21
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
@.str.1 = [27 x i8] c"ERROR: file not found! %s\0A\00"
@SEEK_END = global i32 0
define i64 @GetFileSize(i8* %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %4, label %7
4: ; preds = %1
%5 = tail call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%6 = tail call i32 @exit(i32 1)
unreachable
7: ; preds = %1
%8 = load i32, i32* @SEEK_END
%9 = tail call i32 @fseek(i32* %2, i32 0, i32 %8)
%10 = tail call i64 @ftell(i32* %2)
%11 = tail call i32 @fclose(i32* %2)
ret i64 %10
}