int cmodel_calculate_max(int colormodel) {
  switch (colormodel) {
  case 22:
    return 0xff;
    break;
  case 23:
    return 0xffff;
    break;
  case 31:
    return 1;
    break;
  case 9:
    return 0xff;
    break;
  case 10:
    return 0xff;
    break;
  case 11:
    return 0xffff;
    break;
  case 12:
    return 0xffff;
    break;
  case 13:
    return 0xff;
    break;
  case 14:
    return 0xff;
    break;
  case 15:
    return 0xffff;
    break;
  case 16:
    return 0xffff;
    break;
  case 29:
    return 1;
    break;
  case 30:
    return 1;
    break;
  }
  return 0;
}


x86 assembly (clang, -O0):
<cmodel_calculate_max>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x8(%rbp)
mov    -0x8(%rbp),%eax
add    $0xfffffff7,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x16,%eax
ja     11cc <cmodel_calculate_max+0xcc>
mov    -0x10(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
movl   $0xff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xffff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0x1,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xffff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xffff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xffff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0xffff,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0x1,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0x1,-0x4(%rbp)
jmp    11d3 <cmodel_calculate_max+0xd3>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<cmodel_calculate_max>:
add    $0xfffffff7,%edi
xor    %eax,%eax
cmp    $0x16,%edi
ja     1117 <cmodel_calculate_max+0x17>
movslq %edi,%rax
lea    0xeec(%rip),%rcx
mov    (%rcx,%rax,4),%eax
ret

LLVM IR (-O0):
define i32 @cmodel_calculate_max(i32 %0) {
%2 = alloca i32
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %18 [
i32 22, label %5
i32 23, label %6
i32 31, label %7
i32 9, label %8
i32 10, label %9
i32 11, label %10
i32 12, label %11
i32 13, label %12
i32 14, label %13
i32 15, label %14
i32 16, label %15
i32 29, label %16
i32 30, label %17
]
5: ; preds = %1
store i32 255, i32* %2
br label %19
6: ; preds = %1
store i32 65535, i32* %2
br label %19
7: ; preds = %1
store i32 1, i32* %2
br label %19
8: ; preds = %1
store i32 255, i32* %2
br label %19
9: ; preds = %1
store i32 255, i32* %2
br label %19
10: ; preds = %1
store i32 65535, i32* %2
br label %19
11: ; preds = %1
store i32 65535, i32* %2
br label %19
12: ; preds = %1
store i32 255, i32* %2
br label %19
13: ; preds = %1
store i32 255, i32* %2
br label %19
14: ; preds = %1
store i32 65535, i32* %2
br label %19
15: ; preds = %1
store i32 65535, i32* %2
br label %19
16: ; preds = %1
store i32 1, i32* %2
br label %19
17: ; preds = %1
store i32 1, i32* %2
br label %19
18: ; preds = %1
store i32 0, i32* %2
br label %19
19: ; preds = %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%20 = load i32, i32* %2
ret i32 %20
}

LLVM IR (-O2):
@switch.table.cmodel_calculate_max = [23 x i32] [i32 255, i32 255, i32 65535, i32 65535, i32 255, i32 255, i32 65535, i32 65535, i32 0, i32 0, i32 0, i32 0, i32 0, i32 255, i32 65535, i32 0, i32 0, i32 0, i32 0, i32 0, i32 1, i32 1, i32 1]
define i32 @cmodel_calculate_max(i32 %0) {
%2 = add i32 %0, -9
%3 = icmp ult i32 %2, 23
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = getelementptr inbounds [23 x i32], [23 x i32]* @switch.table.cmodel_calculate_max, i64 0, i64 %5
%7 = load i32, i32* %6
br label %8
8: ; preds = %1, %4
%9 = phi i32 [ %7, %4 ], [ 0, %1 ]
ret i32 %9
}