#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 /*<<< orphan*/ scanf(char *, int *);
int menu() {
  int val;
  printf("*************************  MENU OPTIONS *****************\n");
  printf("      Enter 1 to PUSH an Element into STACK\n");
  printf("      Enter 2 to POP an element from STACK \n");
  printf("      Enter 3 to DISPLAY all the elemnts of STACK\n");
  printf("      ENter any other element to exit the program\n");
  scanf("%d", &val);
  return val;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xf00(%rip),%rdi
call   1030 <printf@plt>
lea    0xf21(%rip),%rdi
call   1030 <printf@plt>
lea    0xf42(%rip),%rdi
call   1030 <printf@plt>
lea    0xf69(%rip),%rdi
call   1030 <printf@plt>
lea    0xf90(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<menu>:
push   %rax
lea    0xedb(%rip),%rdi
call   1030 <puts@plt>
lea    0xf09(%rip),%rdi
call   1030 <puts@plt>
lea    0xf29(%rip),%rdi
call   1030 <puts@plt>
lea    0xf49(%rip),%rdi
call   1030 <puts@plt>
lea    0xf6f(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [59 x i8] c"************************* MENU OPTIONS *****************\0A\00"
@.str.1 = [45 x i8] c" Enter 1 to PUSH an Element into STACK\0A\00"
@.str.2 = [45 x i8] c" Enter 2 to POP an element from STACK \0A\00"
@.str.3 = [51 x i8] c" Enter 3 to DISPLAY all the elemnts of STACK\0A\00"
@.str.4 = [51 x i8] c" ENter any other element to exit the program\0A\00"
@.str.5 = [3 x i8] c"%d\00"
define i32 @menu() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([51 x i8], [51 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32* %1)
%8 = load i32, i32* %1
ret i32 %8
}

LLVM IR (-O2):
@.str.5 = [3 x i8] c"%d\00"
@str = [58 x i8] c"************************* MENU OPTIONS *****************\00"
@str.6 = [44 x i8] c" Enter 1 to PUSH an Element into STACK\00"
@str.7 = [44 x i8] c" Enter 2 to POP an element from STACK \00"
@str.8 = [50 x i8] c" Enter 3 to DISPLAY all the elemnts of STACK\00"
@str.9 = [50 x i8] c" ENter any other element to exit the program\00"
define i32 @menu() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([58 x i8], [58 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @str.6, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @str.7, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str.8, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([50 x i8], [50 x i8]* @str.9, i64 0, i64 0))
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32* %1)
%9 = load i32, i32* %1
ret i32 %9
}