#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 day;
  printf("\n\nMenu Options:");
  printf("\n0 = Sunday");
  printf("\n1 = Monday");
  printf("\n2 = Tuesday");
  printf("\n3 = Wednesday");
  printf("\n4 = Thursday");
  printf("\n5 = Friday");
  printf("\n6 = Saturday");
  printf("\n\nEnter a number 0-6 from above to choose a day of the week: ");
  scanf("%d", &day);
  return day;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
call   1030 <printf@plt>
lea    0xed6(%rip),%rdi
call   1030 <printf@plt>
lea    0xed9(%rip),%rdi
call   1030 <printf@plt>
lea    0xedb(%rip),%rdi
call   1030 <printf@plt>
lea    0xedb(%rip),%rdi
call   1030 <printf@plt>
lea    0xedd(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0f(%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    0xed8(%rip),%rdi
call   1030 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <printf@plt>
lea    0xedc(%rip),%rdi
call   1030 <printf@plt>
lea    0xedd(%rip),%rdi
call   1030 <printf@plt>
lea    0xee0(%rip),%rdi
call   1030 <printf@plt>
lea    0xee2(%rip),%rdi
call   1030 <printf@plt>
lea    0xee2(%rip),%rdi
call   1030 <printf@plt>
lea    0xee4(%rip),%rdi
call   1030 <printf@plt>
lea    0xf16(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [16 x i8] c"\0A\0AMenu Options:\00"
@.str.1 = [12 x i8] c"\0A0 = Sunday\00"
@.str.2 = [12 x i8] c"\0A1 = Monday\00"
@.str.3 = [13 x i8] c"\0A2 = Tuesday\00"
@.str.4 = [15 x i8] c"\0A3 = Wednesday\00"
@.str.5 = [14 x i8] c"\0A4 = Thursday\00"
@.str.6 = [12 x i8] c"\0A5 = Friday\00"
@.str.7 = [14 x i8] c"\0A6 = Saturday\00"
@.str.8 = [62 x i8] c"\0A\0AEnter a number 0-6 from above to choose a day of the week: \00"
@.str.9 = [3 x i8] c"%d\00"
define i32 @menu() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.6, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.7, i64 0, i64 0))
%10 = call i32 @printf(i8* getelementptr inbounds ([62 x i8], [62 x i8]* @.str.8, i64 0, i64 0))
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.9, i64 0, i64 0), i32* %1)
%12 = load i32, i32* %1
ret i32 %12
}

LLVM IR (-O2):
@.str = [16 x i8] c"\0A\0AMenu Options:\00"
@.str.1 = [12 x i8] c"\0A0 = Sunday\00"
@.str.2 = [12 x i8] c"\0A1 = Monday\00"
@.str.3 = [13 x i8] c"\0A2 = Tuesday\00"
@.str.4 = [15 x i8] c"\0A3 = Wednesday\00"
@.str.5 = [14 x i8] c"\0A4 = Thursday\00"
@.str.6 = [12 x i8] c"\0A5 = Friday\00"
@.str.7 = [14 x i8] c"\0A6 = Saturday\00"
@.str.8 = [62 x i8] c"\0A\0AEnter a number 0-6 from above to choose a day of the week: \00"
@.str.9 = [3 x i8] c"%d\00"
define i32 @menu() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%4 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0))
%5 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%6 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0))
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0))
%8 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0))
%9 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.6, i64 0, i64 0))
%10 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.7, i64 0, i64 0))
%11 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([62 x i8], [62 x i8]* @.str.8, i64 0, i64 0))
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.9, i64 0, i64 0), i32* %1)
%13 = load i32, i32* %1
ret i32 %13
}