#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 */

/* Variables and functions */
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ stderr;
void showHelp(const char *cmd) {
  fprintf(stderr, "usage: %s [options]\n", cmd);
  fprintf(stderr, "options include:\n"
                  "  -b N            use a trace buffer size of N KB\n"
                  "  -c              trace into a circular buffer\n"
                  "  -d              trace disk I/O\n"
                  "  -f              trace clock frequency changes\n"
                  "  -l              trace CPU frequency governor load\n"
                  "  -s              trace the kernel scheduler switches\n"
                  "  -t N            trace for N seconds [defualt 5]\n"
                  "  -u              trace bus utilization\n"
                  "  -w              trace the kernel workqueue\n"
                  "  -y              trace sync timelines and waits\n"
                  "  -z              compress the trace dump\n");
}


x86 assembly (clang, -O0):
<showHelp>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    0x2ebd(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xed0(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2ea2(%rip),%rax
mov    (%rax),%edi
lea    0xece(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<showHelp>:
push   %rbx
mov    %rdi,%rdx
mov    0x2ec5(%rip),%rbx
mov    (%rbx),%edi
lea    0xedc(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xee1(%rip),%rsi
xor    %eax,%eax
pop    %rbx
jmp    1030 <fprintf@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [21 x i8] c"usage: %s [options]\0A\00"
@.str.1 = [528 x i8] c"options include:\0A -b N use a trace buffer size of N KB\0A -c trace into a circular buffer\0A -d trace disk I/O\0A -f trace clock frequency changes\0A -l trace CPU frequency governor load\0A -s trace the kernel scheduler switches\0A -t N trace for N seconds [defualt 5]\0A -u trace bus utilization\0A -w trace the kernel workqueue\0A -y trace sync timelines and waits\0A -z compress the trace dump\0A\00"
define void @showHelp(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i32, i32* @stderr
%4 = load i8*, i8** %2
%5 = call i32 (i32, i8*, ...) @fprintf(i32 %3, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = load i32, i32* @stderr
%7 = call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([528 x i8], [528 x i8]* @.str.1, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [21 x i8] c"usage: %s [options]\0A\00"
@.str.1 = [528 x i8] c"options include:\0A -b N use a trace buffer size of N KB\0A -c trace into a circular buffer\0A -d trace disk I/O\0A -f trace clock frequency changes\0A -l trace CPU frequency governor load\0A -s trace the kernel scheduler switches\0A -t N trace for N seconds [defualt 5]\0A -u trace bus utilization\0A -w trace the kernel workqueue\0A -y trace sync timelines and waits\0A -z compress the trace dump\0A\00"
define void @showHelp(i8* %0) {
%2 = load i32, i32* @stderr
%3 = tail call i32 (i32, i8*, ...) @fprintf(i32 %2, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0), i8* %0)
%4 = load i32, i32* @stderr
%5 = tail call i32 (i32, i8*, ...) @fprintf(i32 %4, i8* getelementptr inbounds ([528 x i8], [528 x i8]* @.str.1, i64 0, i64 0))
ret void
}