#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 *);
void usage() {
  printf("Usage:\n");
  printf("\t./syscall <syscall name> [<arguments>]\n");
  printf("Supported Syscalls:\n");
  printf("\t nanosleep [$N] (default args: 100ns)\n");
  printf("\t openat\n");
  printf("\t read\n");
  printf("\t execve <path> [<arguments>] (at most 128 arguments)\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xee1(%rip),%rdi
call   1030 <printf@plt>
lea    0xefe(%rip),%rdi
call   1030 <printf@plt>
lea    0xf07(%rip),%rdi
call   1030 <printf@plt>
lea    0xf23(%rip),%rdi
call   1030 <printf@plt>
lea    0xf21(%rip),%rdi
call   1030 <printf@plt>
lea    0xf1d(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
lea    0xee8(%rip),%rdi
call   1030 <puts@plt>
lea    0xee3(%rip),%rdi
call   1030 <puts@plt>
lea    0xeff(%rip),%rdi
call   1030 <puts@plt>
lea    0xf07(%rip),%rdi
call   1030 <puts@plt>
lea    0xf22(%rip),%rdi
call   1030 <puts@plt>
lea    0xf1f(%rip),%rdi
call   1030 <puts@plt>
lea    0xf1a(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [8 x i8] c"Usage:\0A\00"
@.str.1 = [41 x i8] c"\09./syscall <syscall name> [<arguments>]\0A\00"
@.str.2 = [21 x i8] c"Supported Syscalls:\0A\00"
@.str.3 = [40 x i8] c"\09 nanosleep [$N] (default args: 100ns)\0A\00"
@.str.4 = [10 x i8] c"\09 openat\0A\00"
@.str.5 = [8 x i8] c"\09 read\0A\00"
@.str.6 = [55 x i8] c"\09 execve <path> [<arguments>] (at most 128 arguments)\0A\00"
define void @usage() {
%1 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.6, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [7 x i8] c"Usage:\00"
@str.7 = [40 x i8] c"\09./syscall <syscall name> [<arguments>]\00"
@str.8 = [20 x i8] c"Supported Syscalls:\00"
@str.9 = [39 x i8] c"\09 nanosleep [$N] (default args: 100ns)\00"
@str.10 = [9 x i8] c"\09 openat\00"
@str.11 = [7 x i8] c"\09 read\00"
@str.12 = [54 x i8] c"\09 execve <path> [<arguments>] (at most 128 arguments)\00"
define void @usage() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @str.7, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str.8, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([39 x i8], [39 x i8]* @str.9, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @str.10, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([7 x i8], [7 x i8]* @str.11, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([54 x i8], [54 x i8]* @str.12, i64 0, i64 0))
ret void
}