const char *quantizerString(int quantizer) {
  if (quantizer == 0) {
    return "Lossless";
  }
  if (quantizer <= 12) {
    return "High";
  }
  if (quantizer <= 32) {
    return "Medium";
  }
  if (quantizer == 63) {
    return "Worst";
  }
  return "Low";
}


x86 assembly (clang, -O0):
<quantizerString>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
jne    1121 <quantizerString+0x21>
lea    0xee8(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    117a <quantizerString+0x7a>
cmpl   $0xc,-0xc(%rbp)
jg     113b <quantizerString+0x3b>
lea    0xed7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    117a <quantizerString+0x7a>
cmpl   $0x20,-0xc(%rbp)
jg     1155 <quantizerString+0x55>
lea    0xec2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    117a <quantizerString+0x7a>
cmpl   $0x3f,-0xc(%rbp)
jne    116f <quantizerString+0x6f>
lea    0xeaf(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    117a <quantizerString+0x7a>
lea    0xea5(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<quantizerString>:
test   %edi,%edi
je     1111 <quantizerString+0x11>
cmp    $0xd,%edi
jge    1119 <quantizerString+0x19>
lea    0xef9(%rip),%rax
ret
lea    0xee8(%rip),%rax
ret
cmp    $0x21,%edi
jae    1126 <quantizerString+0x26>
lea    0xee9(%rip),%rax
ret
cmp    $0x3f,%edi
lea    0xee5(%rip),%rcx
lea    0xee4(%rip),%rax
cmove  %rcx,%rax
ret

LLVM IR (-O0):
@.str = [9 x i8] c"Lossless\00"
@.str.1 = [5 x i8] c"High\00"
@.str.2 = [7 x i8] c"Medium\00"
@.str.3 = [6 x i8] c"Worst\00"
@.str.4 = [4 x i8] c"Low\00"
define i8* @quantizerString(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 ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8** %2
br label %20
7: ; preds = %1
%8 = load i32, i32* %3
%9 = icmp sle i32 %8, 12
br i1 %9, label %10, label %11
10: ; preds = %7
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %20
11: ; preds = %7
%12 = load i32, i32* %3
%13 = icmp sle i32 %12, 32
br i1 %13, label %14, label %15
14: ; preds = %11
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %20
15: ; preds = %11
%16 = load i32, i32* %3
%17 = icmp eq i32 %16, 63
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 %20
19: ; preds = %15
store i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %20
20: ; preds = %19, %18, %14, %10, %6
%21 = load i8*, i8** %2
ret i8* %21
}

LLVM IR (-O2):
@.str = [9 x i8] c"Lossless\00"
@.str.1 = [5 x i8] c"High\00"
@.str.2 = [7 x i8] c"Medium\00"
@.str.3 = [6 x i8] c"Worst\00"
@.str.4 = [4 x i8] c"Low\00"
define i8* @quantizerString(i32 %0) {
%2 = icmp eq i32 %0, 0
br i1 %2, label %10, label %3
3: ; preds = %1
%4 = icmp slt i32 %0, 13
br i1 %4, label %10, label %5
5: ; preds = %3
%6 = icmp ult i32 %0, 33
br i1 %6, label %10, label %7
7: ; preds = %5
%8 = icmp eq i32 %0, 63
%9 = select i1 %8, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0)
br label %10
10: ; preds = %7, %5, %3, %1
%11 = phi i8* [ getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), %1 ], [ getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), %3 ], [ getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0), %5 ], [ %9, %7 ]
ret i8* %11
}