#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 *);
int /*<<< orphan*/ printf(char *);
void removeTrigger(void) {
  FILE *ledFileP;
  if ((ledFileP = fopen("/sys/class/leds/beaglebone:green:usr0"
                        "/trigger",
                        "w")) != NULL) {
    fprintf(ledFileP, "none");
    fclose(ledFileP);
  } else {
    printf("Unable to open LED:trigger file\n");
  }
  return;
}


x86 assembly (clang, -O0):
<removeTrigger>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
lea    0xed8(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x8(%rbp)
cmp    $0x0,%rax
je     1187 <removeTrigger+0x47>
mov    -0x8(%rbp),%rdi
lea    0xebc(%rip),%rsi
call   1050 <fprintf@plt>
mov    -0x8(%rbp),%rdi
call   1030 <fclose@plt>
jmp    1193 <removeTrigger+0x53>
lea    0xea7(%rip),%rdi
call   1040 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<removeTrigger>:
push   %rbx
lea    0xeb8(%rip),%rdi
lea    0xedf(%rip),%rsi
call   1050 <fopen@plt>
test   %rax,%rax
je     117e <removeTrigger+0x3e>
mov    %rax,%rbx
lea    0xecd(%rip),%rdi
mov    $0x4,%esi
mov    $0x1,%edx
mov    %rax,%rcx
call   1060 <fwrite@plt>
mov    %rbx,%rdi
pop    %rbx
jmp    1040 <fclose@plt>
lea    0xeb0(%rip),%rdi
pop    %rbx
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [46 x i8] c"/sys/class/leds/beaglebone:green:usr0/trigger\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [5 x i8] c"none\00"
@.str.3 = [33 x i8] c"Unable to open LED:trigger file\0A\00"
define void @removeTrigger() {
%1 = alloca i32*
%2 = call i32* @fopen(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %2, i32** %1
%3 = icmp ne i32* %2, null
br i1 %3, label %4, label %9
4: ; preds = %0
%5 = load i32*, i32** %1
%6 = call i32 @fprintf(i32* %5, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32*, i32** %1
%8 = call i32 @fclose(i32* %7)
br label %11
9: ; preds = %0
%10 = call i32 @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.3, i64 0, i64 0))
br label %11
11: ; preds = %9, %4
ret void
}

LLVM IR (-O2):
@.str = [46 x i8] c"/sys/class/leds/beaglebone:green:usr0/trigger\00"
@.str.1 = [2 x i8] c"w\00"
@.str.2 = [5 x i8] c"none\00"
@str = [32 x i8] c"Unable to open LED:trigger file\00"
define void @removeTrigger() {
%1 = tail call i32* @fopen(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%2 = icmp eq i32* %1, null
br i1 %2, label %6, label %3
3: ; preds = %0
%4 = tail call i64 @fwrite(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i64 4, i64 1, i32* %1)
%5 = tail call i32 @fclose(i32* %1)
br label %8
6: ; preds = %0
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @str, i64 0, i64 0))
br label %8
8: ; preds = %6, %3
ret void
}