#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_VN(int region_code) {
  switch (region_code) {
  case 1:
    return "An Giang";
  case 3:
    return "Ben Tre";
  case 5:
    return "Cao Bang";
  case 9:
    return "Dong Thap";
  case 13:
    return "Hai Phong";
  case 20:
    return "Ho Chi Minh";
  case 21:
    return "Kien Giang";
  case 23:
    return "Lam Dong";
  case 24:
    return "Long An";
  case 30:
    return "Quang Ninh";
  case 32:
    return "Son La";
  case 33:
    return "Tay Ninh";
  case 34:
    return "Thanh Hoa";
  case 35:
    return "Thai Binh";
  case 37:
    return "Tien Giang";
  case 39:
    return "Lang Son";
  case 43:
    return "Dong Nai";
  case 44:
    return "Ha Noi";
  case 45:
    return "Ba Ria-Vung Tau";
  case 46:
    return "Binh Dinh";
  case 47:
    return "Binh Thuan";
  case 49:
    return "Gia Lai";
  case 50:
    return "Ha Giang";
  case 52:
    return "Ha Tinh";
  case 53:
    return "Hoa Binh";
  case 54:
    return "Khanh Hoa";
  case 55:
    return "Kon Tum";
  case 58:
    return "Nghe An";
  case 59:
    return "Ninh Binh";
  case 60:
    return "Ninh Thuan";
  case 61:
    return "Phu Yen";
  case 62:
    return "Quang Binh";
  case 63:
    return "Quang Ngai";
  case 64:
    return "Quang Tri";
  case 65:
    return "Soc Trang";
  case 66:
    return "Thua Thien-Hue";
  case 67:
    return "Tra Vinh";
  case 68:
    return "Tuyen Quang";
  case 69:
    return "Vinh Long";
  case 70:
    return "Yen Bai";
  case 71:
    return "Bac Giang";
  case 72:
    return "Bac Kan";
  case 73:
    return "Bac Lieu";
  case 74:
    return "Bac Ninh";
  case 75:
    return "Binh Duong";
  case 76:
    return "Binh Phuoc";
  case 77:
    return "Ca Mau";
  case 78:
    return "Da Nang";
  case 79:
    return "Hai Duong";
  case 80:
    return "Ha Nam";
  case 81:
    return "Hung Yen";
  case 82:
    return "Nam Dinh";
  case 83:
    return "Phu Tho";
  case 84:
    return "Quang Nam";
  case 85:
    return "Thai Nguyen";
  case 86:
    return "Vinh Phuc";
  case 87:
    return "Can Tho";
  case 88:
    return "Dac Lak";
  case 89:
    return "Lai Chau";
  case 90:
    return "Lao Cai";
  case 91:
    return "Dak Nong";
  case 92:
    return "Dien Bien";
  case 93:
    return "Hau Giang";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_VN>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x5c,%eax
ja     1520 <get_region_name_VN+0x420>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0x103d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1036(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x102e(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1027(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1021(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x101b(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1017(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1012(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x100b(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0x1003(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xffe(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xff5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfee(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfe8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfe2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfdd(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfd6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfcf(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfc6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfc6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfc0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfbb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfb3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfac(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xfa4(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf9d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf97(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf8f(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf87(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf81(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf7c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf74(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf6f(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf6a(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf64(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf5e(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf5d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf56(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf52(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf4c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf44(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf3e(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf36(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf2f(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf28(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf23(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf1e(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf15(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf0d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xf07(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xefe(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xef7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xef0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xee8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xee2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xede(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xed8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xed0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xec8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xec1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xeb9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xeb2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
lea    0xeac(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1528 <get_region_name_VN+0x428>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_VN>:
add    $0xffffffff,%edi
cmp    $0x5c,%edi
ja     1117 <get_region_name_VN+0x17>
movslq %edi,%rax
lea    0x2a56(%rip),%rcx
mov    (%rcx,%rax,8),%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [9 x i8] c"An Giang\00"
@.str.1 = [8 x i8] c"Ben Tre\00"
@.str.2 = [9 x i8] c"Cao Bang\00"
@.str.3 = [10 x i8] c"Dong Thap\00"
@.str.4 = [10 x i8] c"Hai Phong\00"
@.str.5 = [12 x i8] c"Ho Chi Minh\00"
@.str.6 = [11 x i8] c"Kien Giang\00"
@.str.7 = [9 x i8] c"Lam Dong\00"
@.str.8 = [8 x i8] c"Long An\00"
@.str.9 = [11 x i8] c"Quang Ninh\00"
@.str.10 = [7 x i8] c"Son La\00"
@.str.11 = [9 x i8] c"Tay Ninh\00"
@.str.12 = [10 x i8] c"Thanh Hoa\00"
@.str.13 = [10 x i8] c"Thai Binh\00"
@.str.14 = [11 x i8] c"Tien Giang\00"
@.str.15 = [9 x i8] c"Lang Son\00"
@.str.16 = [9 x i8] c"Dong Nai\00"
@.str.17 = [7 x i8] c"Ha Noi\00"
@.str.18 = [16 x i8] c"Ba Ria-Vung Tau\00"
@.str.19 = [10 x i8] c"Binh Dinh\00"
@.str.20 = [11 x i8] c"Binh Thuan\00"
@.str.21 = [8 x i8] c"Gia Lai\00"
@.str.22 = [9 x i8] c"Ha Giang\00"
@.str.23 = [8 x i8] c"Ha Tinh\00"
@.str.24 = [9 x i8] c"Hoa Binh\00"
@.str.25 = [10 x i8] c"Khanh Hoa\00"
@.str.26 = [8 x i8] c"Kon Tum\00"
@.str.27 = [8 x i8] c"Nghe An\00"
@.str.28 = [10 x i8] c"Ninh Binh\00"
@.str.29 = [11 x i8] c"Ninh Thuan\00"
@.str.30 = [8 x i8] c"Phu Yen\00"
@.str.31 = [11 x i8] c"Quang Binh\00"
@.str.32 = [11 x i8] c"Quang Ngai\00"
@.str.33 = [10 x i8] c"Quang Tri\00"
@.str.34 = [10 x i8] c"Soc Trang\00"
@.str.35 = [15 x i8] c"Thua Thien-Hue\00"
@.str.36 = [9 x i8] c"Tra Vinh\00"
@.str.37 = [12 x i8] c"Tuyen Quang\00"
@.str.38 = [10 x i8] c"Vinh Long\00"
@.str.39 = [8 x i8] c"Yen Bai\00"
@.str.40 = [10 x i8] c"Bac Giang\00"
@.str.41 = [8 x i8] c"Bac Kan\00"
@.str.42 = [9 x i8] c"Bac Lieu\00"
@.str.43 = [9 x i8] c"Bac Ninh\00"
@.str.44 = [11 x i8] c"Binh Duong\00"
@.str.45 = [11 x i8] c"Binh Phuoc\00"
@.str.46 = [7 x i8] c"Ca Mau\00"
@.str.47 = [8 x i8] c"Da Nang\00"
@.str.48 = [10 x i8] c"Hai Duong\00"
@.str.49 = [7 x i8] c"Ha Nam\00"
@.str.50 = [9 x i8] c"Hung Yen\00"
@.str.51 = [9 x i8] c"Nam Dinh\00"
@.str.52 = [8 x i8] c"Phu Tho\00"
@.str.53 = [10 x i8] c"Quang Nam\00"
@.str.54 = [12 x i8] c"Thai Nguyen\00"
@.str.55 = [10 x i8] c"Vinh Phuc\00"
@.str.56 = [8 x i8] c"Can Tho\00"
@.str.57 = [8 x i8] c"Dac Lak\00"
@.str.58 = [9 x i8] c"Lai Chau\00"
@.str.59 = [8 x i8] c"Lao Cai\00"
@.str.60 = [9 x i8] c"Dak Nong\00"
@.str.61 = [10 x i8] c"Dien Bien\00"
@.str.62 = [10 x i8] c"Hau Giang\00"
define i8* @get_region_name_VN(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %68 [
i32 1, label %5
i32 3, label %6
i32 5, label %7
i32 9, label %8
i32 13, label %9
i32 20, label %10
i32 21, label %11
i32 23, label %12
i32 24, label %13
i32 30, label %14
i32 32, label %15
i32 33, label %16
i32 34, label %17
i32 35, label %18
i32 37, label %19
i32 39, label %20
i32 43, label %21
i32 44, label %22
i32 45, label %23
i32 46, label %24
i32 47, label %25
i32 49, label %26
i32 50, label %27
i32 52, label %28
i32 53, label %29
i32 54, label %30
i32 55, label %31
i32 58, label %32
i32 59, label %33
i32 60, label %34
i32 61, label %35
i32 62, label %36
i32 63, label %37
i32 64, label %38
i32 65, label %39
i32 66, label %40
i32 67, label %41
i32 68, label %42
i32 69, label %43
i32 70, label %44
i32 71, label %45
i32 72, label %46
i32 73, label %47
i32 74, label %48
i32 75, label %49
i32 76, label %50
i32 77, label %51
i32 78, label %52
i32 79, label %53
i32 80, label %54
i32 81, label %55
i32 82, label %56
i32 83, label %57
i32 84, label %58
i32 85, label %59
i32 86, label %60
i32 87, label %61
i32 88, label %62
i32 89, label %63
i32 90, label %64
i32 91, label %65
i32 92, label %66
i32 93, label %67
]
5: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8** %2
br label %69
6: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %69
7: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %69
8: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %69
9: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %69
10: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %69
11: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %69
12: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %69
13: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %69
14: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %69
15: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %69
16: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.11, i64 0, i64 0), i8** %2
br label %69
17: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.12, i64 0, i64 0), i8** %2
br label %69
18: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.13, i64 0, i64 0), i8** %2
br label %69
19: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.14, i64 0, i64 0), i8** %2
br label %69
20: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.15, i64 0, i64 0), i8** %2
br label %69
21: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.16, i64 0, i64 0), i8** %2
br label %69
22: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.17, i64 0, i64 0), i8** %2
br label %69
23: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.18, i64 0, i64 0), i8** %2
br label %69
24: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.19, i64 0, i64 0), i8** %2
br label %69
25: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.20, i64 0, i64 0), i8** %2
br label %69
26: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.21, i64 0, i64 0), i8** %2
br label %69
27: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.22, i64 0, i64 0), i8** %2
br label %69
28: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.23, i64 0, i64 0), i8** %2
br label %69
29: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.24, i64 0, i64 0), i8** %2
br label %69
30: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.25, i64 0, i64 0), i8** %2
br label %69
31: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.26, i64 0, i64 0), i8** %2
br label %69
32: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.27, i64 0, i64 0), i8** %2
br label %69
33: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.28, i64 0, i64 0), i8** %2
br label %69
34: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.29, i64 0, i64 0), i8** %2
br label %69
35: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.30, i64 0, i64 0), i8** %2
br label %69
36: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.31, i64 0, i64 0), i8** %2
br label %69
37: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.32, i64 0, i64 0), i8** %2
br label %69
38: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.33, i64 0, i64 0), i8** %2
br label %69
39: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.34, i64 0, i64 0), i8** %2
br label %69
40: ; preds = %1
store i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.35, i64 0, i64 0), i8** %2
br label %69
41: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.36, i64 0, i64 0), i8** %2
br label %69
42: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.37, i64 0, i64 0), i8** %2
br label %69
43: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.38, i64 0, i64 0), i8** %2
br label %69
44: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.39, i64 0, i64 0), i8** %2
br label %69
45: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.40, i64 0, i64 0), i8** %2
br label %69
46: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.41, i64 0, i64 0), i8** %2
br label %69
47: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.42, i64 0, i64 0), i8** %2
br label %69
48: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.43, i64 0, i64 0), i8** %2
br label %69
49: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.44, i64 0, i64 0), i8** %2
br label %69
50: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.45, i64 0, i64 0), i8** %2
br label %69
51: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.46, i64 0, i64 0), i8** %2
br label %69
52: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.47, i64 0, i64 0), i8** %2
br label %69
53: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.48, i64 0, i64 0), i8** %2
br label %69
54: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.49, i64 0, i64 0), i8** %2
br label %69
55: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.50, i64 0, i64 0), i8** %2
br label %69
56: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.51, i64 0, i64 0), i8** %2
br label %69
57: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.52, i64 0, i64 0), i8** %2
br label %69
58: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.53, i64 0, i64 0), i8** %2
br label %69
59: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.54, i64 0, i64 0), i8** %2
br label %69
60: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.55, i64 0, i64 0), i8** %2
br label %69
61: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.56, i64 0, i64 0), i8** %2
br label %69
62: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.57, i64 0, i64 0), i8** %2
br label %69
63: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.58, i64 0, i64 0), i8** %2
br label %69
64: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.59, i64 0, i64 0), i8** %2
br label %69
65: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.60, i64 0, i64 0), i8** %2
br label %69
66: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.61, i64 0, i64 0), i8** %2
br label %69
67: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.62, i64 0, i64 0), i8** %2
br label %69
68: ; preds = %1
store i8* null, i8** %2
br label %69
69: ; preds = %68, %67, %66, %65, %64, %63, %62, %61, %60, %59, %58, %57, %56, %55, %54, %53, %52, %51, %50, %49, %48, %47, %46, %45, %44, %43, %42, %41, %40, %39, %38, %37, %36, %35, %34, %33, %32, %31, %30, %29, %28, %27, %26, %25, %24, %23, %22, %21, %20, %19, %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%70 = load i8*, i8** %2
ret i8* %70
}

LLVM IR (-O2):
@.str = [9 x i8] c"An Giang\00"
@.str.1 = [8 x i8] c"Ben Tre\00"
@.str.2 = [9 x i8] c"Cao Bang\00"
@.str.3 = [10 x i8] c"Dong Thap\00"
@.str.4 = [10 x i8] c"Hai Phong\00"
@.str.5 = [12 x i8] c"Ho Chi Minh\00"
@.str.6 = [11 x i8] c"Kien Giang\00"
@.str.7 = [9 x i8] c"Lam Dong\00"
@.str.8 = [8 x i8] c"Long An\00"
@.str.9 = [11 x i8] c"Quang Ninh\00"
@.str.10 = [7 x i8] c"Son La\00"
@.str.11 = [9 x i8] c"Tay Ninh\00"
@.str.12 = [10 x i8] c"Thanh Hoa\00"
@.str.13 = [10 x i8] c"Thai Binh\00"
@.str.14 = [11 x i8] c"Tien Giang\00"
@.str.15 = [9 x i8] c"Lang Son\00"
@.str.16 = [9 x i8] c"Dong Nai\00"
@.str.17 = [7 x i8] c"Ha Noi\00"
@.str.18 = [16 x i8] c"Ba Ria-Vung Tau\00"
@.str.19 = [10 x i8] c"Binh Dinh\00"
@.str.20 = [11 x i8] c"Binh Thuan\00"
@.str.21 = [8 x i8] c"Gia Lai\00"
@.str.22 = [9 x i8] c"Ha Giang\00"
@.str.23 = [8 x i8] c"Ha Tinh\00"
@.str.24 = [9 x i8] c"Hoa Binh\00"
@.str.25 = [10 x i8] c"Khanh Hoa\00"
@.str.26 = [8 x i8] c"Kon Tum\00"
@.str.27 = [8 x i8] c"Nghe An\00"
@.str.28 = [10 x i8] c"Ninh Binh\00"
@.str.29 = [11 x i8] c"Ninh Thuan\00"
@.str.30 = [8 x i8] c"Phu Yen\00"
@.str.31 = [11 x i8] c"Quang Binh\00"
@.str.32 = [11 x i8] c"Quang Ngai\00"
@.str.33 = [10 x i8] c"Quang Tri\00"
@.str.34 = [10 x i8] c"Soc Trang\00"
@.str.35 = [15 x i8] c"Thua Thien-Hue\00"
@.str.36 = [9 x i8] c"Tra Vinh\00"
@.str.37 = [12 x i8] c"Tuyen Quang\00"
@.str.38 = [10 x i8] c"Vinh Long\00"
@.str.39 = [8 x i8] c"Yen Bai\00"
@.str.40 = [10 x i8] c"Bac Giang\00"
@.str.41 = [8 x i8] c"Bac Kan\00"
@.str.42 = [9 x i8] c"Bac Lieu\00"
@.str.43 = [9 x i8] c"Bac Ninh\00"
@.str.44 = [11 x i8] c"Binh Duong\00"
@.str.45 = [11 x i8] c"Binh Phuoc\00"
@.str.46 = [7 x i8] c"Ca Mau\00"
@.str.47 = [8 x i8] c"Da Nang\00"
@.str.48 = [10 x i8] c"Hai Duong\00"
@.str.49 = [7 x i8] c"Ha Nam\00"
@.str.50 = [9 x i8] c"Hung Yen\00"
@.str.51 = [9 x i8] c"Nam Dinh\00"
@.str.52 = [8 x i8] c"Phu Tho\00"
@.str.53 = [10 x i8] c"Quang Nam\00"
@.str.54 = [12 x i8] c"Thai Nguyen\00"
@.str.55 = [10 x i8] c"Vinh Phuc\00"
@.str.56 = [8 x i8] c"Can Tho\00"
@.str.57 = [8 x i8] c"Dac Lak\00"
@.str.58 = [9 x i8] c"Lai Chau\00"
@.str.59 = [8 x i8] c"Lao Cai\00"
@.str.60 = [9 x i8] c"Dak Nong\00"
@.str.61 = [10 x i8] c"Dien Bien\00"
@.str.62 = [10 x i8] c"Hau Giang\00"
@switch.table.get_region_name_VN = [93 x i8*] [i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0), i8* null, i8* null, i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), i8* null, i8* null, i8* null, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.4, i64 0, i64 0), i8* null, i8* null, i8* null, i8* null, i8* null, i8* null, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.6, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8* null, i8* null, i8* null, i8* null, i8* null, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.9, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.11, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.12, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.13, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.14, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.15, i64 0, i64 0), i8* null, i8* null, i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.16, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.17, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.18, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.19, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.20, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.21, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.22, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.23, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.24, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.25, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.26, i64 0, i64 0), i8* null, i8* null, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.27, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.28, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.29, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.30, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.31, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.32, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.33, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.34, i64 0, i64 0), i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.35, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.36, i64 0, i64 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.37, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.38, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.39, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.40, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.41, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.42, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.43, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.44, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.45, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.46, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.47, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.48, i64 0, i64 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.49, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.50, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.51, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.52, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.53, i64 0, i64 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.54, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.55, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.56, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.57, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.58, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.59, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.60, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.61, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.62, i64 0, i64 0)]
define i8* @get_region_name_VN(i32 %0) {
%2 = add i32 %0, -1
%3 = icmp ult i32 %2, 93
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = getelementptr inbounds [93 x i8*], [93 x i8*]* @switch.table.get_region_name_VN, 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
}