#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_DK(int region_code) {
  switch (region_code) {
  case 17:
    return "Hovedstaden";
  case 18:
    return "Midtjylland";
  case 19:
    return "Nordjylland";
  case 20:
    return "Sjelland";
  case 21:
    return "Syddanmark";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<get_region_name_DK>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffef,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x4,%eax
ja     1180 <get_region_name_DK+0x80>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xedd(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1188 <get_region_name_DK+0x88>
lea    0xed9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1188 <get_region_name_DK+0x88>
lea    0xed5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1188 <get_region_name_DK+0x88>
lea    0xed1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1188 <get_region_name_DK+0x88>
lea    0xeca(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1188 <get_region_name_DK+0x88>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_region_name_DK>:
add    $0xffffffef,%edi
cmp    $0x4,%edi
ja     111a <get_region_name_DK+0x1a>
movslq %edi,%rax
lea    0xf26(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [12 x i8] c"Hovedstaden\00"
@.str.1 = [12 x i8] c"Midtjylland\00"
@.str.2 = [12 x i8] c"Nordjylland\00"
@.str.3 = [9 x i8] c"Sjelland\00"
@.str.4 = [11 x i8] c"Syddanmark\00"
define i8* @get_region_name_DK(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %10 [
i32 17, label %5
i32 18, label %6
i32 19, label %7
i32 20, label %8
i32 21, label %9
]
5: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8** %2
br label %11
6: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %11
7: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %11
8: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %11
9: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %11
10: ; preds = %1
store i8* null, i8** %2
br label %11
11: ; preds = %10, %9, %8, %7, %6, %5
%12 = load i8*, i8** %2
ret i8* %12
}

LLVM IR (-O2):
@.str = [12 x i8] c"Hovedstaden\00"
@.str.1 = [12 x i8] c"Midtjylland\00"
@.str.2 = [12 x i8] c"Nordjylland\00"
@.str.3 = [9 x i8] c"Sjelland\00"
@.str.4 = [11 x i8] c"Syddanmark\00"
@reltable.get_region_name_DK = [5 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str to i64), i64 ptrtoint ([5 x i32]* @reltable.get_region_name_DK to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.1 to i64), i64 ptrtoint ([5 x i32]* @reltable.get_region_name_DK to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.2 to i64), i64 ptrtoint ([5 x i32]* @reltable.get_region_name_DK to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.3 to i64), i64 ptrtoint ([5 x i32]* @reltable.get_region_name_DK to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.4 to i64), i64 ptrtoint ([5 x i32]* @reltable.get_region_name_DK to i64)) to i32)]
define i8* @get_region_name_DK(i32 %0) {
%2 = add i32 %0, -17
%3 = icmp ult i32 %2, 5
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 ([5 x i32]* @reltable.get_region_name_DK to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ null, %1 ]
ret i8* %9
}