#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*/ printf(char *, ...);
int usage(void) {
  printf("\nUsage: lu <options>\n\n");
  printf("Options:\n");
  printf("  -n N : Decompose NxN matrix, where N is at least 16 and power of "
         "2.\n");
  printf("  -o   : Print matrix before and after decompose.\n");
  printf("  -c   : Check result.\n\n");
  printf("Default: lu -n %d\n\n", (16 * 16));
  return 1;
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeee(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeea(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf23(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf48(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xf53(%rip),%rdi
mov    $0x100,%esi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x1,%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
lea    0xeec(%rip),%rdi
call   1030 <puts@plt>
lea    0xef6(%rip),%rdi
call   1030 <puts@plt>
lea    0xef3(%rip),%rdi
call   1030 <puts@plt>
lea    0xf2d(%rip),%rdi
call   1030 <puts@plt>
lea    0xf53(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
mov    $0x100,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0x1,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"\0AUsage: lu <options>\0A\0A\00"
@.str.1 = [10 x i8] c"Options:\0A\00"
@.str.2 = [71 x i8] c" -n N : Decompose NxN matrix, where N is at least 16 and power of 2.\0A\00"
@.str.3 = [51 x i8] c" -o : Print matrix before and after decompose.\0A\00"
@.str.4 = [25 x i8] c" -c : Check result.\0A\0A\00"
@.str.5 = [20 x i8] c"Default: lu -n %d\0A\0A\00"
define i32 @usage() {
%1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%2 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([71 x i8], [71 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.5, i64 0, i64 0), i32 256)
ret i32 1
}

LLVM IR (-O2):
@.str.5 = [20 x i8] c"Default: lu -n %d\0A\0A\00"
@str = [22 x i8] c"\0AUsage: lu <options>\0A\00"
@str.6 = [9 x i8] c"Options:\00"
@str.7 = [70 x i8] c" -n N : Decompose NxN matrix, where N is at least 16 and power of 2.\00"
@str.8 = [50 x i8] c" -o : Print matrix before and after decompose.\00"
@str.9 = [24 x i8] c" -c : Check result.\0A\00"
define i32 @usage() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([22 x i8], [22 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @str.6, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([70 x i8], [70 x i8]* @str.7, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str.8, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str.9, i64 0, i64 0))
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @.str.5, i64 0, i64 0), i32 256)
ret i32 1
}