#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: lfsr-test 0x<numbers> [seed] [spin] [verify]\n");
  printf("-------------------------------------------------------------\n");
  printf("*numbers: how many random numbers to produce (in hex)\n"
         "seed:     initial value\n"
         "spin:     how many iterations before we produce a number\n"
         "verify:   check if LFSR has iterated correctly\n\n"
         "Only <numbers> is required. The rest are evaluated to 0 or false\n"
         "Elapsed/mean time and verification results are printed at the"
         "end of the test\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0e(%rip),%rdi
call   1030 <printf@plt>
lea    0xf41(%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    0xf10(%rip),%rdi
call   1030 <puts@plt>
lea    0xf42(%rip),%rdi
pop    %rax
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [53 x i8] c"Usage: lfsr-test 0x<numbers> [seed] [spin] [verify]\0A\00"
@.str.1 = [63 x i8] c"-------------------------------------------------------------\0A\00"
@.str.2 = [326 x i8] c"*numbers: how many random numbers to produce (in hex)\0Aseed: initial value\0Aspin: how many iterations before we produce a number\0Averify: check if LFSR has iterated correctly\0A\0AOnly <numbers> is required. The rest are evaluated to 0 or false\0AElapsed/mean time and verification results are printed at theend of the test\0A\00"
define void @usage() {
%1 = call i32 @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([63 x i8], [63 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([326 x i8], [326 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [52 x i8] c"Usage: lfsr-test 0x<numbers> [seed] [spin] [verify]\00"
@str.3 = [62 x i8] c"-------------------------------------------------------------\00"
@str.4 = [325 x i8] c"*numbers: how many random numbers to produce (in hex)\0Aseed: initial value\0Aspin: how many iterations before we produce a number\0Averify: check if LFSR has iterated correctly\0A\0AOnly <numbers> is required. The rest are evaluated to 0 or false\0AElapsed/mean time and verification results are printed at theend of the test\00"
define void @usage() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @str.3, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([325 x i8], [325 x i8]* @str.4, i64 0, i64 0))
ret void
}