#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */
typedef int uint8_t;

/* Variables and functions */
char *suit_str(uint8_t card) {
  switch (card & 0x03) {
  case 0:
    return "Spade";
  case 1:
    return "Heart";
  case 2:
    return "Club";
  case 3:
    return "Diamond";
  default:
    return "NULL";
  }
}


x86 assembly (clang, -O0):
<suit_str>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
and    $0x3,%eax
mov    %rax,-0x18(%rbp)
sub    $0x3,%eax
ja     116e <suit_str+0x6e>
mov    -0x18(%rbp),%rax
lea    0xedb(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xedb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1179 <suit_str+0x79>
lea    0xed1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1179 <suit_str+0x79>
lea    0xec7(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1179 <suit_str+0x79>
lea    0xebc(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    1179 <suit_str+0x79>
lea    0xeb4(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<suit_str>:
and    $0x3,%edi
lea    0xf12(%rip),%rcx
movslq (%rcx,%rdi,4),%rax
add    %rcx,%rax
ret

LLVM IR (-O0):
@.str = [6 x i8] c"Spade\00"
@.str.1 = [6 x i8] c"Heart\00"
@.str.2 = [5 x i8] c"Club\00"
@.str.3 = [8 x i8] c"Diamond\00"
@.str.4 = [5 x i8] c"NULL\00"
define i8* @suit_str(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
%5 = and i32 %4, 3
switch i32 %5, label %10 [
i32 0, label %6
i32 1, label %7
i32 2, label %8
i32 3, label %9
]
6: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8** %2
br label %11
7: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %11
8: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %11
9: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %11
10: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %11
11: ; preds = %10, %9, %8, %7, %6
%12 = load i8*, i8** %2
ret i8* %12
}

LLVM IR (-O2):
@.str = [6 x i8] c"Spade\00"
@.str.1 = [6 x i8] c"Heart\00"
@.str.2 = [5 x i8] c"Club\00"
@.str.3 = [8 x i8] c"Diamond\00"
@reltable.suit_str = [4 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str to i64), i64 ptrtoint ([4 x i32]* @reltable.suit_str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.1 to i64), i64 ptrtoint ([4 x i32]* @reltable.suit_str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.2 to i64), i64 ptrtoint ([4 x i32]* @reltable.suit_str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.3 to i64), i64 ptrtoint ([4 x i32]* @reltable.suit_str to i64)) to i32)]
define i8* @suit_str(i32 %0) {
%2 = and i32 %0, 3
%3 = zext i32 %2 to i64
%4 = shl i64 %3, 2
%5 = call i8* @llvm.load.relative.i64(i8* bitcast ([4 x i32]* @reltable.suit_str to i8*), i64 %4)
ret i8* %5
}