char *toPowerLevel(int v) {
  if (v == 0)
    return "normal";
  else if (v == 1)
    return "-1 db";
  else if (v == 2)
    return "-2 db";
  else if (v == 3)
    return "-3 db";
  else if (v == 4)
    return "-4 db";
  else if (v == 5)
    return "-5 db";
  else if (v == 6)
    return "-6 db";
  else if (v == 7)
    return "-7 db";
  else if (v == 8)
    return "-8 db";
  else if (v == 9)
    return "-9 db";
  return "unknown";
}


x86 assembly (clang, -O0):
<toPowerLevel>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
jne    1121 <toPowerLevel+0x21>
lea    0xee8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x1,-0xc(%rbp)
jne    113b <toPowerLevel+0x3b>
lea    0xed5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x2,-0xc(%rbp)
jne    1155 <toPowerLevel+0x55>
lea    0xec1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x3,-0xc(%rbp)
jne    116f <toPowerLevel+0x6f>
lea    0xead(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x4,-0xc(%rbp)
jne    1189 <toPowerLevel+0x89>
lea    0xe99(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x5,-0xc(%rbp)
jne    11a3 <toPowerLevel+0xa3>
lea    0xe85(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x6,-0xc(%rbp)
jne    11bd <toPowerLevel+0xbd>
lea    0xe71(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x7,-0xc(%rbp)
jne    11d7 <toPowerLevel+0xd7>
lea    0xe5d(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x8,-0xc(%rbp)
jne    11f1 <toPowerLevel+0xf1>
lea    0xe49(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
cmpl   $0x9,-0xc(%rbp)
jne    120b <toPowerLevel+0x10b>
lea    0xe35(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1243 <toPowerLevel+0x143>
jmp    1210 <toPowerLevel+0x110>
jmp    1215 <toPowerLevel+0x115>
jmp    121a <toPowerLevel+0x11a>
jmp    121f <toPowerLevel+0x11f>
jmp    1224 <toPowerLevel+0x124>
jmp    1229 <toPowerLevel+0x129>
jmp    122e <toPowerLevel+0x12e>
jmp    1233 <toPowerLevel+0x133>
jmp    1238 <toPowerLevel+0x138>
lea    0xdfe(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<toPowerLevel>:
cmp    $0x9,%edi
ja     1117 <toPowerLevel+0x17>
movslq %edi,%rax
lea    0xf39(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xf1f(%rip),%rax
ret

LLVM IR (-O0):
@.str = [7 x i8] c"normal\00"
@.str.1 = [6 x i8] c"-1 db\00"
@.str.2 = [6 x i8] c"-2 db\00"
@.str.3 = [6 x i8] c"-3 db\00"
@.str.4 = [6 x i8] c"-4 db\00"
@.str.5 = [6 x i8] c"-5 db\00"
@.str.6 = [6 x i8] c"-6 db\00"
@.str.7 = [6 x i8] c"-7 db\00"
@.str.8 = [6 x i8] c"-8 db\00"
@.str.9 = [6 x i8] c"-9 db\00"
@.str.10 = [8 x i8] c"unknown\00"
define i8* @toPowerLevel(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
%5 = icmp eq i32 %4, 0
br i1 %5, label %6, label %7
6: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8** %2
br label %53
7: ; preds = %1
%8 = load i32, i32* %3
%9 = icmp eq i32 %8, 1
br i1 %9, label %10, label %11
10: ; preds = %7
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %53
11: ; preds = %7
%12 = load i32, i32* %3
%13 = icmp eq i32 %12, 2
br i1 %13, label %14, label %15
14: ; preds = %11
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %53
15: ; preds = %11
%16 = load i32, i32* %3
%17 = icmp eq i32 %16, 3
br i1 %17, label %18, label %19
18: ; preds = %15
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %53
19: ; preds = %15
%20 = load i32, i32* %3
%21 = icmp eq i32 %20, 4
br i1 %21, label %22, label %23
22: ; preds = %19
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %53
23: ; preds = %19
%24 = load i32, i32* %3
%25 = icmp eq i32 %24, 5
br i1 %25, label %26, label %27
26: ; preds = %23
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %53
27: ; preds = %23
%28 = load i32, i32* %3
%29 = icmp eq i32 %28, 6
br i1 %29, label %30, label %31
30: ; preds = %27
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %53
31: ; preds = %27
%32 = load i32, i32* %3
%33 = icmp eq i32 %32, 7
br i1 %33, label %34, label %35
34: ; preds = %31
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %53
35: ; preds = %31
%36 = load i32, i32* %3
%37 = icmp eq i32 %36, 8
br i1 %37, label %38, label %39
38: ; preds = %35
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %53
39: ; preds = %35
%40 = load i32, i32* %3
%41 = icmp eq i32 %40, 9
br i1 %41, label %42, label %43
42: ; preds = %39
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %53
43: ; preds = %39
br label %44
44: ; preds = %43
br label %45
45: ; preds = %44
br label %46
46: ; preds = %45
br label %47
47: ; preds = %46
br label %48
48: ; preds = %47
br label %49
49: ; preds = %48
br label %50
50: ; preds = %49
br label %51
51: ; preds = %50
br label %52
52: ; preds = %51
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %53
53: ; preds = %52, %42, %38, %34, %30, %26, %22, %18, %14, %10, %6
%54 = load i8*, i8** %2
ret i8* %54
}

LLVM IR (-O2):
@.str = [7 x i8] c"normal\00"
@.str.1 = [6 x i8] c"-1 db\00"
@.str.2 = [6 x i8] c"-2 db\00"
@.str.3 = [6 x i8] c"-3 db\00"
@.str.4 = [6 x i8] c"-4 db\00"
@.str.5 = [6 x i8] c"-5 db\00"
@.str.6 = [6 x i8] c"-6 db\00"
@.str.7 = [6 x i8] c"-7 db\00"
@.str.8 = [6 x i8] c"-8 db\00"
@.str.9 = [6 x i8] c"-9 db\00"
@.str.10 = [8 x i8] c"unknown\00"
@reltable.toPowerLevel = [10 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.1 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.2 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.3 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.4 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.5 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.6 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.7 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.8 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.9 to i64), i64 ptrtoint ([10 x i32]* @reltable.toPowerLevel to i64)) to i32)]
define i8* @toPowerLevel(i32 %0) {
%2 = icmp ult i32 %0, 10
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 ([10 x i32]* @reltable.toPowerLevel 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.10, i64 0, i64 0), %1 ]
ret i8* %8
}