#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*/ errno;
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *, char *);
int /*<<< orphan*/ stderr;
char *strerror(int /*<<< orphan*/);
int __save_options(char *filename) {
  FILE *f;
  f = fopen(filename, "w");
  if (!f) {
    fprintf(stderr, "Failed to open '%s': %s\n", filename, strerror(errno));
    return -1;
  }
  fclose(f);
  return 0;
}


x86 assembly (clang, -O0):
<__save_options>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xea9(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    11af <__save_options+0x6f>
mov    0x2e6e(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x24(%rbp)
mov    -0x10(%rbp),%rax
mov    %rax,-0x20(%rbp)
mov    0x2e52(%rip),%rax
mov    (%rax),%edi
call   1060 <strerror@plt>
mov    -0x24(%rbp),%edi
mov    -0x20(%rbp),%rdx
mov    %rax,%rcx
lea    0xe64(%rip),%rsi
call   1040 <fprintf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    11bf <__save_options+0x7f>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<__save_options>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xeb3(%rip),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     1163 <__save_options+0x23>
mov    %rax,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
jmp    1193 <__save_options+0x53>
mov    0x2e76(%rip),%rax
mov    (%rax),%ebp
mov    0x2e65(%rip),%rax
mov    (%rax),%edi
call   1060 <strerror@plt>
lea    0xe81(%rip),%rsi
mov    %ebp,%edi
mov    %rbx,%rdx
mov    %rax,%rcx
call   1040 <fprintf@plt>
mov    $0xffffffff,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"w\00"
@stderr = global i32 0
@.str.1 = [25 x i8] c"Failed to open '%s': %s\0A\00"
@errno = global i32 0
define i32 @__save_options(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 ne i32* %7, null
br i1 %8, label %15, label %9
9: ; preds = %1
%10 = load i32, i32* @stderr
%11 = load i8*, i8** %3
%12 = load i32, i32* @errno
%13 = call i8* @strerror(i32 %12)
%14 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %11, i8* %13)
store i32 -1, i32* %2
br label %18
15: ; preds = %1
%16 = load i32*, i32** %4
%17 = call i32 @fclose(i32* %16)
store i32 0, i32* %2
br label %18
18: ; preds = %15, %9
%19 = load i32, i32* %2
ret i32 %19
}

LLVM IR (-O2):
@.str = [2 x i8] c"w\00"
@stderr = global i32 0
@.str.1 = [25 x i8] c"Failed to open '%s': %s\0A\00"
@errno = global i32 0
define i32 @__save_options(i8* %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 %4, label %9
4: ; preds = %1
%5 = load i32, i32* @stderr
%6 = load i32, i32* @errno
%7 = tail call i8* @strerror(i32 %6)
%8 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i8* %0, i8* %7)
br label %11
9: ; preds = %1
%10 = tail call i32 @fclose(i32* %2)
br label %11
11: ; preds = %9, %4
%12 = phi i32 [ 0, %9 ], [ -1, %4 ]
ret i32 %12
}