#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 introscreen() {
  printf("\nWELCOME! This program will solve simultaneous");
  printf("\nlinear equations (matrices) using Elimination");
  printf("\nMethods. Please select the method you want to use:\n");
  printf("\n1. Naive Gaussian Elimination Method");
  printf("\n2. Gauss-Jordan Elimination Method");
  printf("\n3. LU Decomposition Elimination Method\n");
  printf("\nOption No.> ");
}


x86 assembly (clang, -O0):
<introscreen>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xf08(%rip),%rdi
call   1030 <printf@plt>
lea    0xf2b(%rip),%rdi
call   1030 <printf@plt>
lea    0xf54(%rip),%rdi
call   1030 <printf@plt>
lea    0xf6e(%rip),%rdi
call   1030 <printf@plt>
lea    0xf86(%rip),%rdi
call   1030 <printf@plt>
lea    0xfa3(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<introscreen>:
push   %rax
lea    0xed8(%rip),%rdi
call   1040 <printf@plt>
lea    0xefb(%rip),%rdi
call   1040 <printf@plt>
lea    0xf76(%rip),%rdi
call   1030 <puts@plt>
lea    0xf12(%rip),%rdi
call   1040 <printf@plt>
lea    0xf2c(%rip),%rdi
call   1040 <printf@plt>
lea    0xf86(%rip),%rdi
call   1030 <puts@plt>
lea    0xf38(%rip),%rdi
pop    %rax
jmp    1040 <printf@plt>

LLVM IR (-O0):
@.str = [47 x i8] c"\0AWELCOME! This program will solve simultaneous\00"
@.str.1 = [47 x i8] c"\0Alinear equations (matrices) using Elimination\00"
@.str.2 = [53 x i8] c"\0AMethods. Please select the method you want to use:\0A\00"
@.str.3 = [38 x i8] c"\0A1. Naive Gaussian Elimination Method\00"
@.str.4 = [36 x i8] c"\0A2. Gauss-Jordan Elimination Method\00"
@.str.5 = [41 x i8] c"\0A3. LU Decomposition Elimination Method\0A\00"
@.str.6 = [14 x i8] c"\0AOption No.> \00"
define void @introscreen() {
%1 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([53 x i8], [53 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [47 x i8] c"\0AWELCOME! This program will solve simultaneous\00"
@.str.1 = [47 x i8] c"\0Alinear equations (matrices) using Elimination\00"
@.str.3 = [38 x i8] c"\0A1. Naive Gaussian Elimination Method\00"
@.str.4 = [36 x i8] c"\0A2. Gauss-Jordan Elimination Method\00"
@.str.6 = [14 x i8] c"\0AOption No.> \00"
@str = [52 x i8] c"\0AMethods. Please select the method you want to use:\00"
@str.7 = [40 x i8] c"\0A3. LU Decomposition Elimination Method\00"
define void @introscreen() {
%1 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([47 x i8], [47 x i8]* @.str.1, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([52 x i8], [52 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @.str.3, i64 0, i64 0))
%5 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @str.7, i64 0, i64 0))
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0))
ret void
}