#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 main(void) {
  int day;
  printf("Enter the day of a week: ");
  scanf("%d", &day);
  switch (day) {
  case 1:
    printf("\nSunday");
    break;
  case 2:
    printf("\nMonday");
    break;
  case 3:
    printf("\nTuesday");
    break;
  case 4:
    printf("\nWednesday");
    break;
  case 5:
    printf("\nThrusday");
    break;
  case 6:
    printf("\nFriday");
    break;
  case 7:
    printf("\nSaturday");
    break;
  default:
    printf("\nWrong input");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xee6(%rip),%rdi
call   1030 <printf@plt>
lea    0xef4(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x6,%eax
ja     11eb <main+0xcb>
mov    -0x10(%rbp),%rax
lea    0xe95(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xebe(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xeb5(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xeac(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xea4(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xe9e(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xe97(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xe8e(%rip),%rdi
call   1030 <printf@plt>
jmp    11f7 <main+0xd7>
lea    0xe87(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
call   1030 <printf@plt>
lea    0xee6(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0x6,%eax
ja     115c <main+0x3c>
cltq
lea    0xf19(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1163 <main+0x43>
lea    0xefa(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [26 x i8] c"Enter the day of a week: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [8 x i8] c"\0ASunday\00"
@.str.3 = [8 x i8] c"\0AMonday\00"
@.str.4 = [9 x i8] c"\0ATuesday\00"
@.str.5 = [11 x i8] c"\0AWednesday\00"
@.str.6 = [10 x i8] c"\0AThrusday\00"
@.str.7 = [8 x i8] c"\0AFriday\00"
@.str.8 = [10 x i8] c"\0ASaturday\00"
@.str.9 = [13 x i8] c"\0AWrong input\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%5 = load i32, i32* %2
switch i32 %5, label %20 [
i32 1, label %6
i32 2, label %8
i32 3, label %10
i32 4, label %12
i32 5, label %14
i32 6, label %16
i32 7, label %18
]
6: ; preds = %0
%7 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
br label %22
8: ; preds = %0
%9 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
br label %22
10: ; preds = %0
%11 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.4, i64 0, i64 0))
br label %22
12: ; preds = %0
%13 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.5, i64 0, i64 0))
br label %22
14: ; preds = %0
%15 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.6, i64 0, i64 0))
br label %22
16: ; preds = %0
%17 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.7, i64 0, i64 0))
br label %22
18: ; preds = %0
%19 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.8, i64 0, i64 0))
br label %22
20: ; preds = %0
%21 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0))
br label %22
22: ; preds = %20, %18, %16, %14, %12, %10, %8, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [26 x i8] c"Enter the day of a week: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [8 x i8] c"\0ASunday\00"
@.str.3 = [8 x i8] c"\0AMonday\00"
@.str.4 = [9 x i8] c"\0ATuesday\00"
@.str.5 = [11 x i8] c"\0AWednesday\00"
@.str.6 = [10 x i8] c"\0AThrusday\00"
@.str.7 = [8 x i8] c"\0AFriday\00"
@.str.8 = [10 x i8] c"\0ASaturday\00"
@.str.9 = [13 x i8] c"\0AWrong input\00"
@reltable.main = [7 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.2 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.3 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.4 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.5 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.6 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.7 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.8 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32)]
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = add i32 %5, -1
%7 = icmp ult i32 %6, 7
br i1 %7, label %8, label %12
8: ; preds = %0
%9 = sext i32 %6 to i64
%10 = shl i64 %9, 2
%11 = call i8* @llvm.load.relative.i64(i8* bitcast ([7 x i32]* @reltable.main to i8*), i64 %10)
br label %12
12: ; preds = %0, %8
%13 = phi i8* [ %11, %8 ], [ getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), %0 ]
%14 = call i32 @printf(i8* dereferenceable(1) %13)
ret i32 0
}