#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, int /*<<< orphan*/,
                         int /*<<< orphan*/);
scalar_t__ ftell(int /*<<< orphan*/ *);
int isEmpty(char *filename) {
  FILE *file = fopen(filename, "r");
  if (file == NULL) {
    return 1;
  }
  fseek(file, 0, SEEK_END);
  if (ftell(file) == 0) {
    fclose(file);
    return 1;
  }
  fclose(file);
  return 0;
}


x86 assembly (clang, -O0):
<isEmpty>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xea9(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    1177 <isEmpty+0x37>
movl   $0x1,-0x4(%rbp)
jmp    11c3 <isEmpty+0x83>
mov    -0x18(%rbp),%rdi
mov    0x2e66(%rip),%rax
mov    (%rax),%edx
xor    %esi,%esi
call   1050 <fseek@plt>
mov    -0x18(%rbp),%rdi
call   1040 <ftell@plt>
cmp    $0x0,%rax
jne    11b3 <isEmpty+0x73>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
movl   $0x1,-0x4(%rbp)
jmp    11c3 <isEmpty+0x83>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<isEmpty>:
push   %rbp
push   %rbx
push   %rax
lea    0xeb6(%rip),%rsi
call   1060 <fopen@plt>
test   %rax,%rax
je     1185 <isEmpty+0x45>
mov    %rax,%rbx
mov    0x2e8a(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1050 <fseek@plt>
mov    %rbx,%rdi
call   1040 <ftell@plt>
xor    %ebp,%ebp
test   %rax,%rax
sete   %bpl
mov    %rbx,%rdi
call   1030 <fclose@plt>
jmp    118a <isEmpty+0x4a>
mov    $0x1,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
define i32 @isEmpty(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
%4 = alloca i32*
store i8* %0, i8** %3
%5 = load i8*, i8** %3
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([2 x i8], [2 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 %10
9: ; preds = %1
store i32 1, i32* %2
br label %23
10: ; preds = %1
%11 = load i32*, i32** %4
%12 = load i32, i32* @SEEK_END
%13 = call i32 @fseek(i32* %11, i32 0, i32 %12)
%14 = load i32*, i32** %4
%15 = call i64 @ftell(i32* %14)
%16 = icmp eq i64 %15, 0
br i1 %16, label %17, label %20
17: ; preds = %10
%18 = load i32*, i32** %4
%19 = call i32 @fclose(i32* %18)
store i32 1, i32* %2
br label %23
20: ; preds = %10
%21 = load i32*, i32** %4
%22 = call i32 @fclose(i32* %21)
store i32 0, i32* %2
br label %23
23: ; preds = %20, %17, %9
%24 = load i32, i32* %2
ret i32 %24
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@SEEK_END = global i32 0
define i32 @isEmpty(i8* nocapture %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %11, label %4
4: ; preds = %1
%5 = load i32, i32* @SEEK_END
%6 = tail call i32 @fseek(i32* %2, i32 0, i32 %5)
%7 = tail call i64 @ftell(i32* %2)
%8 = icmp eq i64 %7, 0
%9 = tail call i32 @fclose(i32* %2)
%10 = zext i1 %8 to i32
br label %11
11: ; preds = %4, %1
%12 = phi i32 [ 1, %1 ], [ %10, %4 ]
ret i32 %12
}