#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 *);
main() {
  int input_value;
  scanf("%d", &input_value);
  switch (input_value) {
  case 1:
    printf(" January\n");
    break;
  case 2:
    printf(" February\n");
    break;
  case 3:
    printf(" March\n");
    break;
  case 4:
    printf(" April\n");
    break;
  case 5:
    printf(" May\n");
    break;
  case 6:
    printf(" June\n");
    break;
  case 7:
    printf(" July\n");
    break;
  case 8:
    printf(" August\n");
    break;
  case 9:
    printf(" September\n");
    break;
  case 10:
    printf(" October\n");
    break;
  case 11:
    printf(" November\n");
    break;
  case 12:
    printf(" December\n");
    break;
  default:
    printf(" Unknown.\n");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xefa(%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    $0xb,%eax
ja     1234 <main+0x114>
mov    -0x10(%rbp),%rax
lea    0xea1(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xec4(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xebd(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xeb7(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xeae(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xea5(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe9a(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe90(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe86(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe7e(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe79(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe72(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe6c(%rip),%rdi
call   1030 <printf@plt>
jmp    1240 <main+0x120>
lea    0xe66(%rip),%rdi
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0xb,%eax
ja     1150 <main+0x30>
cltq
lea    0xf29(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1157 <main+0x37>
lea    0xf0e(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [10 x i8] c" January\0A\00"
@.str.2 = [11 x i8] c" February\0A\00"
@.str.3 = [8 x i8] c" March\0A\00"
@.str.4 = [8 x i8] c" April\0A\00"
@.str.5 = [6 x i8] c" May\0A\00"
@.str.6 = [7 x i8] c" June\0A\00"
@.str.7 = [7 x i8] c" July\0A\00"
@.str.8 = [9 x i8] c" August\0A\00"
@.str.9 = [12 x i8] c" September\0A\00"
@.str.10 = [10 x i8] c" October\0A\00"
@.str.11 = [11 x i8] c" November\0A\00"
@.str.12 = [11 x i8] c" December\0A\00"
@.str.13 = [11 x i8] c" Unknown.\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%4 = load i32, i32* %2
switch i32 %4, label %29 [
i32 1, label %5
i32 2, label %7
i32 3, label %9
i32 4, label %11
i32 5, label %13
i32 6, label %15
i32 7, label %17
i32 8, label %19
i32 9, label %21
i32 10, label %23
i32 11, label %25
i32 12, label %27
]
5: ; preds = %0
%6 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0))
br label %31
7: ; preds = %0
%8 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0))
br label %31
9: ; preds = %0
%10 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
br label %31
11: ; preds = %0
%12 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0))
br label %31
13: ; preds = %0
%14 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.5, i64 0, i64 0))
br label %31
15: ; preds = %0
%16 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.6, i64 0, i64 0))
br label %31
17: ; preds = %0
%18 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.7, i64 0, i64 0))
br label %31
19: ; preds = %0
%20 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.8, i64 0, i64 0))
br label %31
21: ; preds = %0
%22 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.9, i64 0, i64 0))
br label %31
23: ; preds = %0
%24 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.10, i64 0, i64 0))
br label %31
25: ; preds = %0
%26 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.11, i64 0, i64 0))
br label %31
27: ; preds = %0
%28 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.12, i64 0, i64 0))
br label %31
29: ; preds = %0
%30 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.13, i64 0, i64 0))
br label %31
31: ; preds = %29, %27, %25, %23, %21, %19, %17, %15, %13, %11, %9, %7, %5
%32 = load i32, i32* %1
ret i32 %32
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@str = [10 x i8] c" December\00"
@str.14 = [10 x i8] c" November\00"
@str.15 = [9 x i8] c" October\00"
@str.16 = [11 x i8] c" September\00"
@str.17 = [8 x i8] c" August\00"
@str.18 = [6 x i8] c" July\00"
@str.19 = [6 x i8] c" June\00"
@str.20 = [5 x i8] c" May\00"
@str.21 = [7 x i8] c" April\00"
@str.22 = [7 x i8] c" March\00"
@str.23 = [10 x i8] c" February\00"
@str.24 = [9 x i8] c" January\00"
@str.25 = [10 x i8] c" Unknown.\00"
@reltable.main = [12 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.24 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @str.23 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @str.22 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @str.21 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @str.20 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @str.19 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @str.18 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @str.17 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @str.16 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.15 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @str.14 to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @str to i64), i64 ptrtoint ([12 x i32]* @reltable.main to i64)) to i32)]
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = add i32 %4, -1
%6 = icmp ult i32 %5, 12
br i1 %6, label %7, label %11
7: ; preds = %0
%8 = sext i32 %5 to i64
%9 = shl i64 %8, 2
%10 = call i8* @llvm.load.relative.i64(i8* bitcast ([12 x i32]* @reltable.main to i8*), i64 %9)
br label %11
11: ; preds = %0, %7
%12 = phi i8* [ %10, %7 ], [ getelementptr inbounds ([10 x i8], [10 x i8]* @str.25, i64 0, i64 0), %0 ]
%13 = call i32 @puts(i8* dereferenceable(1) %12)
ret i32 0
}