#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*/ LOG_INFO;
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char const *, char *);
int /*<<< orphan*/ fscanf(int /*<<< orphan*/ *, char *, unsigned int *);
int /*<<< orphan*/ syslog(int /*<<< orphan*/, char *);
unsigned int get_freq(const char *device) {
  unsigned int freq = 0;
  FILE *frq;
  if ((frq = fopen(device, "r"))) {
    fscanf(frq, "%d", &freq);
    fclose(frq);
  } else {
    syslog(LOG_INFO, "Failed to open cpufreq device!");
  }
  return (freq);
}


x86 assembly (clang, -O0):
<get_freq>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xea2(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x18(%rbp)
cmp    $0x0,%rax
je     1193 <get_freq+0x53>
mov    -0x18(%rbp),%rdi
lea    0xe86(%rip),%rsi
lea    -0xc(%rbp),%rdx
call   1040 <fscanf@plt>
mov    -0x18(%rbp),%rdi
call   1030 <fclose@plt>
jmp    11a8 <get_freq+0x68>
mov    0x2e46(%rip),%rax
mov    (%rax),%edi
lea    0xe62(%rip),%rsi
call   1050 <syslog@plt>
mov    -0xc(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_freq>:
push   %rbx
sub    $0x10,%rsp
movl   $0x0,0xc(%rsp)
lea    0xeac(%rip),%rsi
call   1060 <fopen@plt>
test   %rax,%rax
je     1183 <get_freq+0x43>
mov    %rax,%rbx
lea    0xe9a(%rip),%rsi
lea    0xc(%rsp),%rdx
mov    %rax,%rdi
call   1040 <fscanf@plt>
mov    %rbx,%rdi
call   1030 <fclose@plt>
mov    0xc(%rsp),%eax
jmp    119a <get_freq+0x5a>
mov    0x2e56(%rip),%rax
mov    (%rax),%edi
lea    0xe72(%rip),%rsi
call   1050 <syslog@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@.str.1 = [3 x i8] c"%d\00"
@LOG_INFO = global i32 0
@.str.2 = [31 x i8] c"Failed to open cpufreq device!\00"
define i32 @get_freq(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
%4 = alloca i32*
store i8* %0, i8** %2
store i32 0, i32* %3
%5 = load i8*, i8** %2
%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 = icmp ne i32* %6, null
br i1 %7, label %8, label %13
8: ; preds = %1
%9 = load i32*, i32** %4
%10 = call i32 @fscanf(i32* %9, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%11 = load i32*, i32** %4
%12 = call i32 @fclose(i32* %11)
br label %16
13: ; preds = %1
%14 = load i32, i32* @LOG_INFO
%15 = call i32 @syslog(i32 %14, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.2, i64 0, i64 0))
br label %16
16: ; preds = %13, %8
%17 = load i32, i32* %3
ret i32 %17
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@.str.1 = [3 x i8] c"%d\00"
@LOG_INFO = global i32 0
@.str.2 = [31 x i8] c"Failed to open cpufreq device!\00"
define i32 @get_freq(i8* nocapture %0) {
%2 = alloca i32
%3 = bitcast i32* %2 to i8*
store i32 0, i32* %2
%4 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%5 = icmp eq i32* %4, null
br i1 %5, label %10, label %6
6: ; preds = %1
%7 = call i32 @fscanf(i32* %4, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = call i32 @fclose(i32* %4)
%9 = load i32, i32* %2
br label %13
10: ; preds = %1
%11 = load i32, i32* @LOG_INFO
%12 = tail call i32 @syslog(i32 %11, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.2, i64 0, i64 0))
br label %13
13: ; preds = %10, %6
%14 = phi i32 [ 0, %10 ], [ %9, %6 ]
ret i32 %14
}