#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*/ closeFile(int /*<<< orphan*/ *);
int fprintf(int /*<<< orphan*/ *, char *, char *);
int /*<<< orphan*/ *openFile(char *, char *);
int /*<<< orphan*/ printf(char *);
void writeToLED(char *fileName, char *value) {
  FILE *file = openFile(fileName, "w");
  int charWritten = fprintf(file, "%s", value);
  if (charWritten <= 0)
    printf("ERROR WRITING DATA");
  closeFile(file);
}


x86 assembly (clang, -O0):
<writeToLED>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xea5(%rip),%rsi
call   1030 <openFile@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
mov    -0x10(%rbp),%rdx
lea    0xe8f(%rip),%rsi
call   1050 <fprintf@plt>
mov    %eax,-0x1c(%rbp)
cmpl   $0x0,-0x1c(%rbp)
jg     1191 <writeToLED+0x51>
lea    0xe79(%rip),%rdi
call   1040 <printf@plt>
mov    -0x18(%rbp),%rdi
call   1060 <closeFile@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<writeToLED>:
push   %r14
push   %rbx
push   %rax
mov    %rsi,%r14
lea    0xeb2(%rip),%rsi
call   1030 <openFile@plt>
mov    %rax,%rbx
lea    0xea5(%rip),%rsi
mov    %rax,%rdi
mov    %r14,%rdx
call   1050 <fprintf@plt>
test   %eax,%eax
jg     1178 <writeToLED+0x38>
lea    0xe92(%rip),%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
add    $0x8,%rsp
pop    %rbx
pop    %r14
jmp    1060 <closeFile@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"w\00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [19 x i8] c"ERROR WRITING DATA\00"
define void @writeToLED(i8* %0, i8* %1) {
%3 = alloca i8*
%4 = alloca i8*
%5 = alloca i32*
%6 = alloca i32
store i8* %0, i8** %3
store i8* %1, i8** %4
%7 = load i8*, i8** %3
%8 = call i32* @openFile(i8* %7, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %8, i32** %5
%9 = load i32*, i32** %5
%10 = load i8*, i8** %4
%11 = call i32 @fprintf(i32* %9, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %10)
store i32 %11, i32* %6
%12 = load i32, i32* %6
%13 = icmp sle i32 %12, 0
br i1 %13, label %14, label %16
14: ; preds = %2
%15 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0))
br label %16
16: ; preds = %14, %2
%17 = load i32*, i32** %5
%18 = call i32 @closeFile(i32* %17)
ret void
}

LLVM IR (-O2):
@.str = [2 x i8] c"w\00"
@.str.1 = [3 x i8] c"%s\00"
@.str.2 = [19 x i8] c"ERROR WRITING DATA\00"
define void @writeToLED(i8* %0, i8* %1) {
%3 = tail call i32* @openFile(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%4 = tail call i32 @fprintf(i32* %3, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8* %1)
%5 = icmp slt i32 %4, 1
br i1 %5, label %6, label %8
6: ; preds = %2
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0))
br label %8
8: ; preds = %6, %2
%9 = tail call i32 @closeFile(i32* %3)
ret void
}