int card_value(char card) {
  int value = 0;
  switch (card) {
  case '2':
    value = 2;
    break;
  case '3':
    value = 3;
    break;
  case '4':
    value = 4;
    break;
  case '5':
    value = 5;
    break;
  case '6':
    value = 6;
    break;
  case '7':
    value = 7;
    break;
  case '8':
    value = 8;
    break;
  case '9':
    value = 9;
    break;
  case 'T':
    value = 10;
    break;
  case 'J':
    value = 11;
    break;
  case 'Q':
    value = 12;
    break;
  case 'K':
    value = 13;
    break;
  case 'A':
    value = 14;
    break;
  }
  return value;
}


x86 assembly (clang, -O0):
<card_value>:
push   %rbp
mov    %rsp,%rbp
mov    %dil,%al
mov    %al,-0x1(%rbp)
movl   $0x0,-0x8(%rbp)
movsbl -0x1(%rbp),%eax
add    $0xffffffce,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x22,%eax
ja     11d2 <card_value+0xd2>
mov    -0x10(%rbp),%rax
lea    0xece(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
movl   $0x2,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x3,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x4,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x5,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x6,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x7,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x8,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0x9,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0xa,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0xb,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0xc,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0xd,-0x8(%rbp)
jmp    11d2 <card_value+0xd2>
movl   $0xe,-0x8(%rbp)
mov    -0x8(%rbp),%eax
pop    %rbp
ret

x86 assembly (clang, -O2):
<card_value>:
xor    %eax,%eax
add    $0xffffffce,%edi
cmp    $0x22,%edi
ja     114f <card_value+0x4f>
lea    0xeef(%rip),%rcx
movslq (%rcx,%rdi,4),%rdx
add    %rcx,%rdx
jmp    *%rdx
mov    $0x2,%eax
ret
mov    $0x3,%eax
ret
mov    $0x4,%eax
ret
mov    $0x5,%eax
ret
mov    $0x6,%eax
ret
mov    $0x7,%eax
ret
mov    $0x8,%eax
ret
mov    $0x9,%eax
ret
mov    $0xe,%eax
ret
mov    $0xb,%eax
ret
mov    $0xd,%eax
ret
mov    $0xc,%eax
ret
mov    $0xa,%eax
ret

LLVM IR (-O0):
define i32 @card_value(i8 signext %0) {
%2 = alloca i8
%3 = alloca i32
store i8 %0, i8* %2
store i32 0, i32* %3
%4 = load i8, i8* %2
%5 = sext i8 %4 to i32
switch i32 %5, label %19 [
i32 50, label %6
i32 51, label %7
i32 52, label %8
i32 53, label %9
i32 54, label %10
i32 55, label %11
i32 56, label %12
i32 57, label %13
i32 84, label %14
i32 74, label %15
i32 81, label %16
i32 75, label %17
i32 65, label %18
]
6: ; preds = %1
store i32 2, i32* %3
br label %19
7: ; preds = %1
store i32 3, i32* %3
br label %19
8: ; preds = %1
store i32 4, i32* %3
br label %19
9: ; preds = %1
store i32 5, i32* %3
br label %19
10: ; preds = %1
store i32 6, i32* %3
br label %19
11: ; preds = %1
store i32 7, i32* %3
br label %19
12: ; preds = %1
store i32 8, i32* %3
br label %19
13: ; preds = %1
store i32 9, i32* %3
br label %19
14: ; preds = %1
store i32 10, i32* %3
br label %19
15: ; preds = %1
store i32 11, i32* %3
br label %19
16: ; preds = %1
store i32 12, i32* %3
br label %19
17: ; preds = %1
store i32 13, i32* %3
br label %19
18: ; preds = %1
store i32 14, i32* %3
br label %19
19: ; preds = %1, %18, %17, %16, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6
%20 = load i32, i32* %3
ret i32 %20
}

LLVM IR (-O2):
define i32 @card_value(i8 signext %0) {
%2 = sext i8 %0 to i32
switch i32 %2, label %16 [
i32 50, label %3
i32 51, label %4
i32 52, label %5
i32 53, label %6
i32 54, label %7
i32 55, label %8
i32 56, label %9
i32 57, label %10
i32 84, label %11
i32 74, label %12
i32 81, label %13
i32 75, label %14
i32 65, label %15
]
3: ; preds = %1
br label %16
4: ; preds = %1
br label %16
5: ; preds = %1
br label %16
6: ; preds = %1
br label %16
7: ; preds = %1
br label %16
8: ; preds = %1
br label %16
9: ; preds = %1
br label %16
10: ; preds = %1
br label %16
11: ; preds = %1
br label %16
12: ; preds = %1
br label %16
13: ; preds = %1
br label %16
14: ; preds = %1
br label %16
15: ; preds = %1
br label %16
16: ; preds = %1, %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5, %4, %3
%17 = phi i32 [ 0, %1 ], [ 14, %15 ], [ 13, %14 ], [ 12, %13 ], [ 11, %12 ], [ 10, %11 ], [ 9, %10 ], [ 8, %9 ], [ 7, %8 ], [ 6, %7 ], [ 5, %6 ], [ 4, %5 ], [ 3, %4 ], [ 2, %3 ]
ret i32 %17
}