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

/* Variables and functions */
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, int);
int save_pid_file(const pid_t pid) {
  FILE *pfile;
  pfile = fopen("/tmp/echod.pid", "w");
  if (pfile == NULL) {
    return -1;
  }
  fprintf(pfile, "%d\n", (int)pid);
  fclose(pfile);
  return 0;
}


x86 assembly (clang, -O0):
<save_pid_file>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
lea    0xebd(%rip),%rdi
lea    0xec5(%rip),%rsi
call   1050 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    116a <save_pid_file+0x3a>
movl   $0xffffffff,-0x4(%rbp)
jmp    1190 <save_pid_file+0x60>
mov    -0x18(%rbp),%rdi
mov    -0x10(%rbp),%rax
mov    %eax,%edx
lea    0xe96(%rip),%rsi
call   1040 <fprintf@plt>
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):
<save_pid_file>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%r14
lea    0xec2(%rip),%rdi
lea    0xeca(%rip),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     1170 <save_pid_file+0x40>
mov    %rax,%rbx
lea    0xeb8(%rip),%rsi
mov    %rax,%rdi
mov    %r14d,%edx
call   1040 <fprintf@plt>
mov    %rbx,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
jmp    1175 <save_pid_file+0x45>
mov    $0xffffffff,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [15 x i8] c"/tmp/echod.pid\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @save_pid_file(i64 %0) {
%2 = alloca i32
%3 = alloca i64
%4 = alloca i32*
store i64 %0, i64* %3
%5 = call i32* @fopen(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %5, i32** %4
%6 = load i32*, i32** %4
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %9
8: ; preds = %1
store i32 -1, i32* %2
br label %16
9: ; preds = %1
%10 = load i32*, i32** %4
%11 = load i64, i64* %3
%12 = trunc i64 %11 to i32
%13 = call i32 @fprintf(i32* %10, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %12)
%14 = load i32*, i32** %4
%15 = call i32 @fclose(i32* %14)
store i32 0, i32* %2
br label %16
16: ; preds = %9, %8
%17 = load i32, i32* %2
ret i32 %17
}

LLVM IR (-O2):
@.str = [15 x i8] c"/tmp/echod.pid\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [4 x i8] c"%d\0A\00"
define i32 @save_pid_file(i64 %0) {
%2 = tail call i32* @fopen(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %8, label %4
4: ; preds = %1
%5 = trunc i64 %0 to i32
%6 = tail call i32 @fprintf(i32* %2, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = tail call i32 @fclose(i32* %2)
br label %8
8: ; preds = %1, %4
%9 = phi i32 [ 0, %4 ], [ -1, %1 ]
ret i32 %9
}