#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_NL(int region_code) {
  switch (region_code) {
  case 1:
    return "Drenthe";
  case 2:
    return "Friesland";
  case 3:
    return "Gelderland";
  case 4:
    return "Groningen";
  case 5:
    return "Limburg";
  case 6:
    return "Noord-Brabant";
  case 7:
    return "Noord-Holland";
  case 9:
    return "Utrecht";
  case 10:
    return "Zeeland";
  case 11:
    return "Zuid-Holland";
  case 15:
    return "Overijssel";
  case 16:
    return "Flevoland";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_NL>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0xf,%eax
ja     11f0 <get_region_name_NL+0xf0>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xf09(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xf01(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xefb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xef6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xef0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xee8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xee6(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xee4(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xedc(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xed4(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xed1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
lea    0xecc(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11f8 <get_region_name_NL+0xf8>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_NL>:
add    $0xffffffff,%edi
cmp    $0xf,%edi
ja     1117 <get_region_name_NL+0x17>
movslq %edi,%rax
lea    0x2cbe(%rip),%rcx
mov    (%rcx,%rax,8),%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [8 x i8] c"Drenthe\00"
@.str.1 = [10 x i8] c"Friesland\00"
@.str.2 = [11 x i8] c"Gelderland\00"
@.str.3 = [10 x i8] c"Groningen\00"
@.str.4 = [8 x i8] c"Limburg\00"
@.str.5 = [14 x i8] c"Noord-Brabant\00"
@.str.6 = [14 x i8] c"Noord-Holland\00"
@.str.7 = [8 x i8] c"Utrecht\00"
@.str.8 = [8 x i8] c"Zeeland\00"
@.str.9 = [13 x i8] c"Zuid-Holland\00"
@.str.10 = [11 x i8] c"Overijssel\00"
@.str.11 = [10 x i8] c"Flevoland\00"
define i8* @get_region_name_NL(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %17 [
i32 1, label %5
i32 2, label %6
i32 3, label %7
i32 4, label %8
i32 5, label %9
i32 6, label %10
i32 7, label %11
i32 9, label %12
i32 10, label %13
i32 11, label %14
i32 15, label %15
i32 16, label %16
]
5: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i8** %2
br label %18
6: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 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 ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %18
9: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %18
10: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %18
11: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %18
12: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 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 ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %18
15: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 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 = [8 x i8] c"Drenthe\00"
@.str.1 = [10 x i8] c"Friesland\00"
@.str.2 = [11 x i8] c"Gelderland\00"
@.str.3 = [10 x i8] c"Groningen\00"
@.str.4 = [8 x i8] c"Limburg\00"
@.str.5 = [14 x i8] c"Noord-Brabant\00"
@.str.6 = [14 x i8] c"Noord-Holland\00"
@.str.7 = [8 x i8] c"Utrecht\00"
@.str.8 = [8 x i8] c"Zeeland\00"
@.str.9 = [13 x i8] c"Zuid-Holland\00"
@.str.10 = [11 x i8] c"Overijssel\00"
@.str.11 = [10 x i8] c"Flevoland\00"
@switch.table.get_region_name_NL = [16 x i8*] [i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.6, i64 0, i64 0), i8* null, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.7, i64 0, i64 0), i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.9, i64 0, i64 0), i8* null, i8* null, i8* null, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.10, i64 0, i64 0), i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.11, i64 0, i64 0)]
define i8* @get_region_name_NL(i32 %0) {
%2 = add i32 %0, -1
%3 = icmp ult i32 %2, 16
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = getelementptr inbounds [16 x i8*], [16 x i8*]* @switch.table.get_region_name_NL, 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
}