#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_SUCCESS;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *);
void usage(void) {
  printf("Usage: ls [options] [directory]\n\n");
  printf("Brief: Lists contents of a directory.\n\n");
  printf("Options:\n");
  printf("  -a, --all     List all entries\n");
  printf("  -i, --inode   Print the inode number of each file\n");
  printf("      --help    Display this information and exit\n");
  printf("      --version Display program version and exit\n");
  exit(EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xed5(%rip),%rdi
call   1030 <printf@plt>
lea    0xeeb(%rip),%rdi
call   1030 <printf@plt>
lea    0xf07(%rip),%rdi
call   1030 <printf@plt>
lea    0xf05(%rip),%rdi
call   1030 <printf@plt>
lea    0xf1b(%rip),%rdi
call   1030 <printf@plt>
lea    0xf44(%rip),%rdi
call   1030 <printf@plt>
lea    0xf6b(%rip),%rdi
call   1030 <printf@plt>
mov    0x2e61(%rip),%rax
mov    (%rax),%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<usage>:
push   %rax
lea    0xed8(%rip),%rdi
call   1030 <puts@plt>
lea    0xeed(%rip),%rdi
call   1030 <puts@plt>
lea    0xf08(%rip),%rdi
call   1030 <puts@plt>
lea    0xf05(%rip),%rdi
call   1030 <puts@plt>
lea    0xf1a(%rip),%rdi
call   1030 <puts@plt>
lea    0xf42(%rip),%rdi
call   1030 <puts@plt>
lea    0xf68(%rip),%rdi
call   1030 <puts@plt>
mov    0x2e64(%rip),%rax
mov    (%rax),%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@.str = [34 x i8] c"Usage: ls [options] [directory]\0A\0A\00"
@.str.1 = [40 x i8] c"Brief: Lists contents of a directory.\0A\0A\00"
@.str.2 = [10 x i8] c"Options:\0A\00"
@.str.3 = [34 x i8] c" -a, --all List all entries\0A\00"
@.str.4 = [53 x i8] c" -i, --inode Print the inode number of each file\0A\00"
@.str.5 = [51 x i8] c" --help Display this information and exit\0A\00"
@.str.6 = [50 x i8] c" --version Display program version and exit\0A\00"
@EXIT_SUCCESS = global i32 0
define void @usage() {
%1 = call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([50 x i8], [50 x i8]* @.str.6, i64 0, i64 0))
%8 = load i32, i32* @EXIT_SUCCESS
%9 = call i32 @exit(i32 %8)
unreachable
}

LLVM IR (-O2):
@EXIT_SUCCESS = global i32 0
@str = [33 x i8] c"Usage: ls [options] [directory]\0A\00"
@str.7 = [39 x i8] c"Brief: Lists contents of a directory.\0A\00"
@str.8 = [9 x i8] c"Options:\00"
@str.9 = [33 x i8] c" -a, --all List all entries\00"
@str.10 = [52 x i8] c" -i, --inode Print the inode number of each file\00"
@str.11 = [50 x i8] c" --help Display this information and exit\00"
@str.12 = [49 x i8] c" --version Display program version and exit\00"
define void @usage() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([39 x i8], [39 x i8]* @str.7, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @str.8, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @str.9, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @str.10, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str.11, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([49 x i8], [49 x i8]* @str.12, i64 0, i64 0))
%8 = load i32, i32* @EXIT_SUCCESS
%9 = tail call i32 @exit(i32 %8)
unreachable
}