#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*/ EXIT_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ stdout;
void usage(char *appname) {
  fprintf(stdout, "Usage: %s < input_stream > ouput_stream 2> error_stream\n",
          appname);
  fprintf(stdout, "\nData will be read from input and written to output.\n");
  fprintf(stdout, "If the output stream blocks, a message will be announced\n");
  fprintf(stdout,
          "to the error stream, which could feed an alerting system.\n");
  exit(EXIT_FAILURE);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    0x2ea5(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xec0(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e8a(%rip),%rax
mov    (%rax),%edi
lea    0xee2(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e73(%rip),%rax
mov    (%rax),%edi
lea    0xf01(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
lea    0xf24(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e4d(%rip),%rax
mov    (%rax),%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    %rdi,%rdx
mov    0x2ead(%rip),%rbx
mov    (%rbx),%edi
lea    0xecc(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xef5(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf1b(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf45(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    0x2e6e(%rip),%rax
mov    (%rax),%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@stdout = global i32 0
@.str = [57 x i8] c"Usage: %s < input_stream > ouput_stream 2> error_stream\0A\00"
@.str.1 = [54 x i8] c"\0AData will be read from input and written to output.\0A\00"
@.str.2 = [58 x i8] c"If the output stream blocks, a message will be announced\0A\00"
@.str.3 = [59 x i8] c"to the error stream, which could feed an alerting system.\0A\00"
@EXIT_FAILURE = global i32 0
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i32, i32* @stdout
%4 = load i8*, i8** %2
%5 = call i32 (i32, i8*, ...) @fprintf(i32 %3, i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = load i32, i32* @stdout
%7 = call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([54 x i8], [54 x i8]* @.str.1, i64 0, i64 0))
%8 = load i32, i32* @stdout
%9 = call i32 (i32, i8*, ...) @fprintf(i32 %8, i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.2, i64 0, i64 0))
%10 = load i32, i32* @stdout
%11 = call i32 (i32, i8*, ...) @fprintf(i32 %10, i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.3, i64 0, i64 0))
%12 = load i32, i32* @EXIT_FAILURE
%13 = call i32 @exit(i32 %12)
unreachable
}

LLVM IR (-O2):
@stdout = global i32 0
@.str = [57 x i8] c"Usage: %s < input_stream > ouput_stream 2> error_stream\0A\00"
@.str.1 = [54 x i8] c"\0AData will be read from input and written to output.\0A\00"
@.str.2 = [58 x i8] c"If the output stream blocks, a message will be announced\0A\00"
@.str.3 = [59 x i8] c"to the error stream, which could feed an alerting system.\0A\00"
@EXIT_FAILURE = global i32 0
define void @usage(i8* %0) {
%2 = load i32, i32* @stdout
%3 = tail call i32 (i32, i8*, ...) @fprintf(i32 %2, i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str, i64 0, i64 0), i8* %0)
%4 = load i32, i32* @stdout
%5 = tail call i32 (i32, i8*, ...) @fprintf(i32 %4, i8* getelementptr inbounds ([54 x i8], [54 x i8]* @.str.1, i64 0, i64 0))
%6 = load i32, i32* @stdout
%7 = tail call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([58 x i8], [58 x i8]* @.str.2, i64 0, i64 0))
%8 = load i32, i32* @stdout
%9 = tail call i32 (i32, i8*, ...) @fprintf(i32 %8, i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.3, i64 0, i64 0))
%10 = load i32, i32* @EXIT_FAILURE
%11 = tail call i32 @exit(i32 %10)
unreachable
}