#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*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/ *, char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, char *);
int logWrite(char *s) {
  FILE *logfd = fopen("log/info.txt", "a+");
  if (logfd == NULL) {
    perror("cant open log!");
  } else {
    printf("%s\n", s);
    fprintf(logfd, "%s\n", s);
    fclose(logfd);
  }
  return 0;
}


x86 assembly (clang, -O0):
<logWrite>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xe9d(%rip),%rdi
lea    0xea3(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    118f <logWrite+0x3f>
lea    0xe8b(%rip),%rdi
call   1070 <perror@plt>
jmp    11bc <logWrite+0x6c>
mov    -0x8(%rbp),%rsi
lea    0xe85(%rip),%rdi
call   1040 <printf@plt>
mov    -0x10(%rbp),%rdi
mov    -0x8(%rbp),%rdx
lea    0xe71(%rip),%rsi
call   1050 <fprintf@plt>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<logWrite>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%r14
lea    0xea1(%rip),%rdi
lea    0xea7(%rip),%rsi
call   1060 <fopen@plt>
test   %rax,%rax
je     11a3 <logWrite+0x53>
mov    %rax,%rbx
lea    0xea5(%rip),%r15
mov    %r15,%rdi
mov    %r14,%rsi
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    %r15,%rsi
mov    %r14,%rdx
call   1050 <fprintf@plt>
mov    %rbx,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret
lea    0xe66(%rip),%rdi
call   1070 <perror@plt>
jmp    119b <logWrite+0x4b>

LLVM IR (-O0):
@.str = [13 x i8] c"log/info.txt\00"
@.str.1 = [3 x i8] c"a+\00"
@.str.2 = [15 x i8] c"cant open log!\00"
@.str.3 = [4 x i8] c"%s\0A\00"
define i32 @logWrite(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
store i8* %0, i8** %2
%4 = call i32* @fopen(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
store i32* %4, i32** %3
%5 = load i32*, i32** %3
%6 = icmp eq i32* %5, null
br i1 %6, label %7, label %9
7: ; preds = %1
%8 = call i32 @perror(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.2, i64 0, i64 0))
br label %17
9: ; preds = %1
%10 = load i8*, i8** %2
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %10)
%12 = load i32*, i32** %3
%13 = load i8*, i8** %2
%14 = call i32 @fprintf(i32* %12, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %13)
%15 = load i32*, i32** %3
%16 = call i32 @fclose(i32* %15)
br label %17
17: ; preds = %9, %7
ret i32 0
}

LLVM IR (-O2):
@.str = [13 x i8] c"log/info.txt\00"
@.str.1 = [3 x i8] c"a+\00"
@.str.2 = [15 x i8] c"cant open log!\00"
@.str.3 = [4 x i8] c"%s\0A\00"
define i32 @logWrite(i8* %0) {
%2 = tail call i32* @fopen(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %4, label %6
4: ; preds = %1
%5 = tail call i32 @perror(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.2, i64 0, i64 0))
br label %10
6: ; preds = %1
%7 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %0)
%8 = tail call i32 @fprintf(i32* %2, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %0)
%9 = tail call i32 @fclose(i32* %2)
br label %10
10: ; preds = %6, %4
ret i32 0
}