#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 u_int8_t;

/* Variables and functions */
char *icmp4_type(u_int8_t type) {
  char *str;
  switch (type) {
  case 0:
    str = "ECHO REPLY";
    break;
  case 3:
    str = "DESTINATION UNREACHABLE";
    break;
  case 4:
    str = "SOURCE QUENCH";
    break;
  case 5:
    str = "REDIRECT";
    break;
  case 8:
    str = "ECHO REQUEST";
    break;
  case 11:
    str = "TIME EXCEEDED";
    break;
  default:
    str = "UNKNOWN";
    break;
  }
  return str;
}


x86 assembly (clang, -O0):
<icmp4_type>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0xb,%rax
ja     118c <icmp4_type+0x8c>
mov    -0x18(%rbp),%rax
lea    0xedd(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xefd(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xef8(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xf00(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xefe(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xef7(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xef4(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1197 <icmp4_type+0x97>
lea    0xef2(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<icmp4_type>:
cmp    $0xb,%edi
ja     1117 <icmp4_type+0x17>
movslq %edi,%rax
lea    0xf51(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xf37(%rip),%rax
ret

LLVM IR (-O0):
@.str = [11 x i8] c"ECHO REPLY\00"
@.str.1 = [24 x i8] c"DESTINATION UNREACHABLE\00"
@.str.2 = [14 x i8] c"SOURCE QUENCH\00"
@.str.3 = [9 x i8] c"REDIRECT\00"
@.str.4 = [13 x i8] c"ECHO REQUEST\00"
@.str.5 = [14 x i8] c"TIME EXCEEDED\00"
@.str.6 = [8 x i8] c"UNKNOWN\00"
define i8* @icmp4_type(i32 %0) {
%2 = alloca i32
%3 = alloca i8*
store i32 %0, i32* %2
%4 = load i32, i32* %2
switch i32 %4, label %11 [
i32 0, label %5
i32 3, label %6
i32 4, label %7
i32 5, label %8
i32 8, label %9
i32 11, label %10
]
5: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i8** %3
br label %12
6: ; preds = %1
store i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i8** %3
br label %12
7: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0), i8** %3
br label %12
8: ; preds = %1
store i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.3, i64 0, i64 0), i8** %3
br label %12
9: ; preds = %1
store i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.4, i64 0, i64 0), i8** %3
br label %12
10: ; preds = %1
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0), i8** %3
br label %12
11: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0), i8** %3
br label %12
12: ; preds = %11, %10, %9, %8, %7, %6, %5
%13 = load i8*, i8** %3
ret i8* %13
}

LLVM IR (-O2):
@.str = [11 x i8] c"ECHO REPLY\00"
@.str.1 = [24 x i8] c"DESTINATION UNREACHABLE\00"
@.str.2 = [14 x i8] c"SOURCE QUENCH\00"
@.str.3 = [9 x i8] c"REDIRECT\00"
@.str.4 = [13 x i8] c"ECHO REQUEST\00"
@.str.5 = [14 x i8] c"TIME EXCEEDED\00"
@.str.6 = [8 x i8] c"UNKNOWN\00"
@reltable.icmp4_type = [12 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([24 x i8]* @.str.1 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.2 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @.str.3 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([13 x i8]* @.str.4 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.6 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([14 x i8]* @.str.5 to i64), i64 ptrtoint ([12 x i32]* @reltable.icmp4_type to i64)) to i32)]
define i8* @icmp4_type(i32 %0) {
%2 = icmp ult i32 %0, 12
br i1 %2, label %3, label %7
3: ; preds = %1
%4 = sext i32 %0 to i64
%5 = shl i64 %4, 2
%6 = call i8* @llvm.load.relative.i64(i8* bitcast ([12 x i32]* @reltable.icmp4_type to i8*), i64 %5)
br label %7
7: ; preds = %1, %3
%8 = phi i8* [ %6, %3 ], [ getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0), %1 ]
ret i8* %8
}