#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_LS(int region_code) {
  switch (region_code) {
  case 10:
    return "Berea";
  case 11:
    return "Butha-Buthe";
  case 12:
    return "Leribe";
  case 13:
    return "Mafeteng";
  case 14:
    return "Maseru";
  case 15:
    return "Mohales Hoek";
  case 16:
    return "Mokhotlong";
  case 17:
    return "Qachas Nek";
  case 18:
    return "Quthing";
  case 19:
    return "Thaba-Tseka";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_LS>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xfffffff6,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x9,%eax
ja     11d0 <get_region_name_LS+0xd0>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xef1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xee7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xee3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xeda(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xed3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xeca(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xec7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xec2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xebd(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
lea    0xeb5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11d8 <get_region_name_LS+0xd8>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_LS>:
add    $0xfffffff6,%edi
cmp    $0x9,%edi
ja     111a <get_region_name_LS+0x1a>
movslq %edi,%rax
lea    0xf4e(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [6 x i8] c"Berea\00"
@.str.1 = [12 x i8] c"Butha-Buthe\00"
@.str.2 = [7 x i8] c"Leribe\00"
@.str.3 = [9 x i8] c"Mafeteng\00"
@.str.4 = [7 x i8] c"Maseru\00"
@.str.5 = [13 x i8] c"Mohales Hoek\00"
@.str.6 = [11 x i8] c"Mokhotlong\00"
@.str.7 = [11 x i8] c"Qachas Nek\00"
@.str.8 = [8 x i8] c"Quthing\00"
@.str.9 = [12 x i8] c"Thaba-Tseka\00"
define i8* @get_region_name_LS(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %15 [
i32 10, label %5
i32 11, label %6
i32 12, label %7
i32 13, label %8
i32 14, label %9
i32 15, label %10
i32 16, label %11
i32 17, label %12
i32 18, label %13
i32 19, label %14
]
5: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8** %2
br label %16
6: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %16
7: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %16
8: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %16
9: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %16
10: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %16
11: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %16
12: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %16
13: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %16
14: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %16
15: ; preds = %1
store i8* null, i8** %2
br label %16
16: ; preds = %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%17 = load i8*, i8** %2
ret i8* %17
}

LLVM IR (-O2):
@.str = [6 x i8] c"Berea\00"
@.str.1 = [12 x i8] c"Butha-Buthe\00"
@.str.2 = [7 x i8] c"Leribe\00"
@.str.3 = [9 x i8] c"Mafeteng\00"
@.str.4 = [7 x i8] c"Maseru\00"
@.str.5 = [13 x i8] c"Mohales Hoek\00"
@.str.6 = [11 x i8] c"Mokhotlong\00"
@.str.7 = [11 x i8] c"Qachas Nek\00"
@.str.8 = [8 x i8] c"Quthing\00"
@.str.9 = [12 x i8] c"Thaba-Tseka\00"
@reltable.get_region_name_LS = [10 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.1 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.2 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.3 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.4 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.5 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.6 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.7 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.8 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.9 to i64), i64 ptrtoint ([10 x i32]* @reltable.get_region_name_LS to i64)) to i32)]
define i8* @get_region_name_LS(i32 %0) {
%2 = add i32 %0, -10
%3 = icmp ult i32 %2, 10
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = shl i64 %5, 2
%7 = call i8* @llvm.load.relative.i64(i8* bitcast ([10 x i32]* @reltable.get_region_name_LS to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ null, %1 ]
ret i8* %9
}