char *NS_GetNameForClass(int class_num) {
  char *classname;
  switch (class_num) {
  case 1:
    classname = "Recon";
    break;
  case 2:
    classname = "Assault";
    break;
  case 3:
    classname = "Commander";
    break;
  case 4:
    classname = "Heavy Support";
    break;
  case 5:
    classname = "Sniper";
    break;
  case 6:
    classname = "Demolishions Expert";
    break;
  case 7:
    classname = "Custom Class";
    break;
  case 0:
    classname = "no class";
    break;
  default:
    classname = "UNKNOWN";
    break;
  }
  return classname;
}


x86 assembly (clang, -O0):
<NS_GetNameForClass>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0x7,%rax
ja     11ac <NS_GetNameForClass+0xac>
mov    -0x18(%rbp),%rax
lea    0xedd(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xeed(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xee3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xedb(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xed5(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xed3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xeca(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xece(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xecb(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    11b7 <NS_GetNameForClass+0xb7>
lea    0xec4(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<NS_GetNameForClass>:
cmp    $0x7,%edi
ja     1117 <NS_GetNameForClass+0x17>
movslq %edi,%rax
lea    0xf51(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xf39(%rip),%rax
ret

LLVM IR (-O0):
@.str = [6 x i8] c"Recon\00"
@.str.1 = [8 x i8] c"Assault\00"
@.str.2 = [10 x i8] c"Commander\00"
@.str.3 = [14 x i8] c"Heavy Support\00"
@.str.4 = [7 x i8] c"Sniper\00"
@.str.5 = [20 x i8] c"Demolishions Expert\00"
@.str.6 = [13 x i8] c"Custom Class\00"
@.str.7 = [9 x i8] c"no class\00"
@.str.8 = [8 x i8] c"UNKNOWN\00"
define i8* @NS_GetNameForClass(i32 %0) {
%2 = alloca i32
%3 = alloca i8*
store i32 %0, i32* %2
%4 = load i32, i32* %2
switch i32 %4, label %13 [
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 0, label %12
]
5: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8** %3
br label %14
6: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8** %3
br label %14
7: ; preds = %1
store i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8** %3
br label %14
8: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0), i8** %3
br label %14
9: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.4, i64 0, i64 0), i8** %3
br label %14
10: ; preds = %1
store i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.5, i64 0, i64 0), i8** %3
br label %14
11: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.6, i64 0, i64 0), i8** %3
br label %14
12: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.7, i64 0, i64 0), i8** %3
br label %14
13: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), i8** %3
br label %14
14: ; preds = %13, %12, %11, %10, %9, %8, %7, %6, %5
%15 = load i8*, i8** %3
ret i8* %15
}

LLVM IR (-O2):
@.str = [6 x i8] c"Recon\00"
@.str.1 = [8 x i8] c"Assault\00"
@.str.2 = [10 x i8] c"Commander\00"
@.str.3 = [14 x i8] c"Heavy Support\00"
@.str.4 = [7 x i8] c"Sniper\00"
@.str.5 = [20 x i8] c"Demolishions Expert\00"
@.str.6 = [13 x i8] c"Custom Class\00"
@.str.7 = [9 x i8] c"no class\00"
@.str.8 = [8 x i8] c"UNKNOWN\00"
@reltable.NS_GetNameForClass = [8 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.7 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.1 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @.str.2 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.3 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.4 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([20 x i8]* @.str.5 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.6 to i64), i64 ptrtoint ([8 x i32]* @reltable.NS_GetNameForClass to i64)) to i32)]
define i8* @NS_GetNameForClass(i32 %0) {
%2 = icmp ult i32 %0, 8
br i1 %2, label %3, label %7
3: ; preds = %1
%4 = sext i32 %0 to i64
%5 = shl i64 %4, 2
%6 = call i8* @llvm.load.relative.i64(i8* bitcast ([8 x i32]* @reltable.NS_GetNameForClass to i8*), i64 %5)
br label %7
7: ; preds = %1, %3
%8 = phi i8* [ %6, %3 ], [ getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0), %1 ]
ret i8* %8
}