#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 */
const char *get_region_name_KR(int region_code) {
  switch (region_code) {
  case 1:
    return "Cheju-do";
  case 3:
    return "Cholla-bukto";
  case 5:
    return "Ch'ungch'ong-bukto";
  case 6:
    return "Kangwon-do";
  case 10:
    return "Pusan-jikhalsi";
  case 11:
    return "Seoul-t'ukpyolsi";
  case 12:
    return "Inch'on-jikhalsi";
  case 13:
    return "Kyonggi-do";
  case 14:
    return "Kyongsang-bukto";
  case 15:
    return "Taegu-jikhalsi";
  case 16:
    return "Cholla-namdo";
  case 17:
    return "Ch'ungch'ong-namdo";
  case 18:
    return "Kwangju-jikhalsi";
  case 19:
    return "Taejon-jikhalsi";
  case 20:
    return "Kyongsang-namdo";
  case 21:
    return "Ulsan-gwangyoksi";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_KR>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x14,%eax
ja     1230 <get_region_name_KR+0x130>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xf1d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf16(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf13(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf16(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf11(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf10(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf11(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf12(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf09(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1238 <get_region_name_KR+0x138>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_KR>:
add    $0xffffffff,%edi
cmp    $0x14,%edi
ja     1117 <get_region_name_KR+0x17>
movslq %edi,%rax
lea    0x2c96(%rip),%rcx
mov    (%rcx,%rax,8),%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [9 x i8] c"Cheju-do\00"
@.str.1 = [13 x i8] c"Cholla-bukto\00"
@.str.2 = [19 x i8] c"Ch'ungch'ong-bukto\00"
@.str.3 = [11 x i8] c"Kangwon-do\00"
@.str.4 = [15 x i8] c"Pusan-jikhalsi\00"
@.str.5 = [17 x i8] c"Seoul-t'ukpyolsi\00"
@.str.6 = [17 x i8] c"Inch'on-jikhalsi\00"
@.str.7 = [11 x i8] c"Kyonggi-do\00"
@.str.8 = [16 x i8] c"Kyongsang-bukto\00"
@.str.9 = [15 x i8] c"Taegu-jikhalsi\00"
@.str.10 = [13 x i8] c"Cholla-namdo\00"
@.str.11 = [19 x i8] c"Ch'ungch'ong-namdo\00"
@.str.12 = [17 x i8] c"Kwangju-jikhalsi\00"
@.str.13 = [16 x i8] c"Taejon-jikhalsi\00"
@.str.14 = [16 x i8] c"Kyongsang-namdo\00"
@.str.15 = [17 x i8] c"Ulsan-gwangyoksi\00"
define i8* @get_region_name_KR(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %21 [
i32 1, label %5
i32 3, label %6
i32 5, label %7
i32 6, label %8
i32 10, label %9
i32 11, label %10
i32 12, label %11
i32 13, label %12
i32 14, label %13
i32 15, label %14
i32 16, label %15
i32 17, label %16
i32 18, label %17
i32 19, label %18
i32 20, label %19
i32 21, label %20
]
5: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8** %2
br label %22
6: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %22
7: ; preds = %1
store i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %22
8: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %22
9: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %22
10: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %22
11: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %22
12: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %22
13: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %22
14: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %22
15: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %22
16: ; preds = %1
store i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.11, i64 0, i64 0), i8** %2
br label %22
17: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.12, i64 0, i64 0), i8** %2
br label %22
18: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.13, i64 0, i64 0), i8** %2
br label %22
19: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.14, i64 0, i64 0), i8** %2
br label %22
20: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.15, i64 0, i64 0), i8** %2
br label %22
21: ; preds = %1
store i8* null, i8** %2
br label %22
22: ; preds = %21, %20, %19, %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%23 = load i8*, i8** %2
ret i8* %23
}

LLVM IR (-O2):
@.str = [9 x i8] c"Cheju-do\00"
@.str.1 = [13 x i8] c"Cholla-bukto\00"
@.str.2 = [19 x i8] c"Ch'ungch'ong-bukto\00"
@.str.3 = [11 x i8] c"Kangwon-do\00"
@.str.4 = [15 x i8] c"Pusan-jikhalsi\00"
@.str.5 = [17 x i8] c"Seoul-t'ukpyolsi\00"
@.str.6 = [17 x i8] c"Inch'on-jikhalsi\00"
@.str.7 = [11 x i8] c"Kyonggi-do\00"
@.str.8 = [16 x i8] c"Kyongsang-bukto\00"
@.str.9 = [15 x i8] c"Taegu-jikhalsi\00"
@.str.10 = [13 x i8] c"Cholla-namdo\00"
@.str.11 = [19 x i8] c"Ch'ungch'ong-namdo\00"
@.str.12 = [17 x i8] c"Kwangju-jikhalsi\00"
@.str.13 = [16 x i8] c"Taejon-jikhalsi\00"
@.str.14 = [16 x i8] c"Kyongsang-namdo\00"
@.str.15 = [17 x i8] c"Ulsan-gwangyoksi\00"
@switch.table.get_region_name_KR = [21 x i8*] [i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.3, i64 0, i64 0), i8* null, i8* null, i8* null, i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.6, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.9, i64 0, i64 0), i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.13, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.14, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.15, i64 0, i64 0)]
define i8* @get_region_name_KR(i32 %0) {
%2 = add i32 %0, -1
%3 = icmp ult i32 %2, 21
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = getelementptr inbounds [21 x i8*], [21 x i8*]* @switch.table.get_region_name_KR, i64 0, i64 %5
%7 = load i8*, i8** %6
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ null, %1 ]
ret i8* %9
}