#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_MU(int region_code) {
  switch (region_code) {
  case 12:
    return "Black River";
  case 13:
    return "Flacq";
  case 14:
    return "Grand Port";
  case 15:
    return "Moka";
  case 16:
    return "Pamplemousses";
  case 17:
    return "Plaines Wilhems";
  case 18:
    return "Port Louis";
  case 19:
    return "Riviere du Rempart";
  case 20:
    return "Savanne";
  case 21:
    return "Agalega Islands";
  case 22:
    return "Cargados Carajos";
  case 23:
    return "Rodrigues";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_MU>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xfffffff4,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0xb,%eax
ja     11f0 <get_region_name_MU+0xf0>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xef9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xef5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xeeb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xee6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xedb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xed9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xed9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xed4(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xed7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xecf(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xecf(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
lea    0xed0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_MU+0xf8>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_MU>:
add    $0xfffffff4,%edi
cmp    $0xb,%edi
ja     111a <get_region_name_MU+0x1a>
movslq %edi,%rax
lea    0xf82(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [12 x i8] c"Black River\00"
@.str.1 = [6 x i8] c"Flacq\00"
@.str.2 = [11 x i8] c"Grand Port\00"
@.str.3 = [5 x i8] c"Moka\00"
@.str.4 = [14 x i8] c"Pamplemousses\00"
@.str.5 = [16 x i8] c"Plaines Wilhems\00"
@.str.6 = [11 x i8] c"Port Louis\00"
@.str.7 = [19 x i8] c"Riviere du Rempart\00"
@.str.8 = [8 x i8] c"Savanne\00"
@.str.9 = [16 x i8] c"Agalega Islands\00"
@.str.10 = [17 x i8] c"Cargados Carajos\00"
@.str.11 = [10 x i8] c"Rodrigues\00"
define i8* @get_region_name_MU(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %17 [
i32 12, label %5
i32 13, label %6
i32 14, label %7
i32 15, label %8
i32 16, label %9
i32 17, label %10
i32 18, label %11
i32 19, label %12
i32 20, label %13
i32 21, label %14
i32 22, label %15
i32 23, label %16
]
5: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8** %2
br label %18
6: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %18
7: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %18
8: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %18
9: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %18
10: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %18
11: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %18
12: ; preds = %1
store i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %18
13: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %18
14: ; preds = %1
store i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %18
15: ; preds = %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %18
16: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.11, i64 0, i64 0), i8** %2
br label %18
17: ; preds = %1
store i8* null, i8** %2
br label %18
18: ; preds = %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%19 = load i8*, i8** %2
ret i8* %19
}

LLVM IR (-O2):
@.str = [12 x i8] c"Black River\00"
@.str.1 = [6 x i8] c"Flacq\00"
@.str.2 = [11 x i8] c"Grand Port\00"
@.str.3 = [5 x i8] c"Moka\00"
@.str.4 = [14 x i8] c"Pamplemousses\00"
@.str.5 = [16 x i8] c"Plaines Wilhems\00"
@.str.6 = [11 x i8] c"Port Louis\00"
@.str.7 = [19 x i8] c"Riviere du Rempart\00"
@.str.8 = [8 x i8] c"Savanne\00"
@.str.9 = [16 x i8] c"Agalega Islands\00"
@.str.10 = [17 x i8] c"Cargados Carajos\00"
@.str.11 = [10 x i8] c"Rodrigues\00"
@reltable.get_region_name_MU = [12 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.1 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.2 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.3 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.4 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.5 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.7 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.8 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([16 x i8]* @.str.9 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([17 x i8]* @.str.10 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.11 to i64), i64 ptrtoint ([12 x i32]* @reltable.get_region_name_MU to i64)) to i32)]
define i8* @get_region_name_MU(i32 %0) {
%2 = add i32 %0, -12
%3 = icmp ult i32 %2, 12
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 ([12 x i32]* @reltable.get_region_name_MU to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ null, %1 ]
ret i8* %9
}