#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 */

/* Variables and functions */
const char *colortostr(int color) {
  switch (color) {
  case 30:
    return "black";
  case 31:
    return "red";
  case 32:
    return "green";
  case 33:
    return "yellow";
  case 34:
    return "blue";
  case 35:
    return "magenta";
  case 36:
    return "cyan";
  case 37:
    return "white";
  default:
    return NULL;
  }
}


x86 assembly (clang, -O0):
<colortostr>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffffe2,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x7,%eax
ja     11b0 <colortostr+0xb0>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xee9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xedf(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xed3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xec9(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xec0(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xeb5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xead(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
lea    0xea2(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11b8 <colortostr+0xb8>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<colortostr>:
add    $0xffffffe2,%edi
cmp    $0x7,%edi
ja     111a <colortostr+0x1a>
movslq %edi,%rax
lea    0xf1e(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
xor    %eax,%eax
ret

LLVM IR (-O0):
@.str = [6 x i8] c"black\00"
@.str.1 = [4 x i8] c"red\00"
@.str.2 = [6 x i8] c"green\00"
@.str.3 = [7 x i8] c"yellow\00"
@.str.4 = [5 x i8] c"blue\00"
@.str.5 = [8 x i8] c"magenta\00"
@.str.6 = [5 x i8] c"cyan\00"
@.str.7 = [6 x i8] c"white\00"
define i8* @colortostr(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %13 [
i32 30, label %5
i32 31, label %6
i32 32, label %7
i32 33, label %8
i32 34, label %9
i32 35, label %10
i32 36, label %11
i32 37, label %12
]
5: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8** %2
br label %14
6: ; preds = %1
store i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %14
7: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %14
8: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %14
9: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %14
10: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %14
11: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %14
12: ; preds = %1
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %14
13: ; preds = %1
store i8* null, i8** %2
br label %14
14: ; preds = %13, %12, %11, %10, %9, %8, %7, %6, %5
%15 = load i8*, i8** %2
ret i8* %15
}

LLVM IR (-O2):
@.str = [6 x i8] c"black\00"
@.str.1 = [4 x i8] c"red\00"
@.str.2 = [6 x i8] c"green\00"
@.str.3 = [7 x i8] c"yellow\00"
@.str.4 = [5 x i8] c"blue\00"
@.str.5 = [8 x i8] c"magenta\00"
@.str.6 = [5 x i8] c"cyan\00"
@.str.7 = [6 x i8] c"white\00"
@reltable.colortostr = [8 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.1 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.2 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.3 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.4 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.5 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.6 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.7 to i64), i64 ptrtoint ([8 x i32]* @reltable.colortostr to i64)) to i32)]
define i8* @colortostr(i32 %0) {
%2 = add i32 %0, -30
%3 = icmp ult i32 %2, 8
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = shl i64 %5, 2
%7 = call i8* @llvm.load.relative.i64(i8* bitcast ([8 x i32]* @reltable.colortostr to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ null, %1 ]
ret i8* %9
}