#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 uint16_t;

/* Variables and functions */
const char *tlsver2str(uint16_t ver) {
  const char *tlsver = "Unkown";
  switch (ver) {
  case 0x0300:
    tlsver = "SSL 3.0";
    break;
  case 0x0301:
    tlsver = "TLS 1.0";
    break;
  case 0x0302:
    tlsver = "TLS 1.1";
    break;
  case 0x0303:
    tlsver = "TLS 1.2";
    break;
  default:
    break;
  }
  return tlsver;
}


x86 assembly (clang, -O0):
<tlsver2str>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0x4(%rbp)
lea    0xf02(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x4(%rbp),%eax
add    $0xfffffd00,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x3,%eax
ja     117d <tlsver2str+0x7d>
mov    -0x18(%rbp),%rax
lea    0xecc(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xed3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1182 <tlsver2str+0x82>
lea    0xecb(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1182 <tlsver2str+0x82>
lea    0xec3(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1182 <tlsver2str+0x82>
lea    0xebb(%rip),%rax
mov    %rax,-0x10(%rbp)
jmp    1182 <tlsver2str+0x82>
jmp    1182 <tlsver2str+0x82>
mov    -0x10(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<tlsver2str>:
add    $0xfffffd00,%edi
cmp    $0x3,%edi
ja     111d <tlsver2str+0x1d>
movslq %edi,%rax
lea    0xf13(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xedc(%rip),%rax
ret

LLVM IR (-O0):
@.str = [7 x i8] c"Unkown\00"
@.str.1 = [8 x i8] c"SSL 3.0\00"
@.str.2 = [8 x i8] c"TLS 1.0\00"
@.str.3 = [8 x i8] c"TLS 1.1\00"
@.str.4 = [8 x i8] c"TLS 1.2\00"
define i8* @tlsver2str(i32 %0) {
%2 = alloca i32
%3 = alloca i8*
store i32 %0, i32* %2
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8** %3
%4 = load i32, i32* %2
switch i32 %4, label %9 [
i32 768, label %5
i32 769, label %6
i32 770, label %7
i32 771, label %8
]
5: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i8** %3
br label %10
6: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0), i8** %3
br label %10
7: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0), i8** %3
br label %10
8: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.4, i64 0, i64 0), i8** %3
br label %10
9: ; preds = %1
br label %10
10: ; preds = %9, %8, %7, %6, %5
%11 = load i8*, i8** %3
ret i8* %11
}

LLVM IR (-O2):
@.str = [7 x i8] c"Unkown\00"
@.str.1 = [8 x i8] c"SSL 3.0\00"
@.str.2 = [8 x i8] c"TLS 1.0\00"
@.str.3 = [8 x i8] c"TLS 1.1\00"
@.str.4 = [8 x i8] c"TLS 1.2\00"
@reltable.tlsver2str = [4 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.1 to i64), i64 ptrtoint ([4 x i32]* @reltable.tlsver2str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.2 to i64), i64 ptrtoint ([4 x i32]* @reltable.tlsver2str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.3 to i64), i64 ptrtoint ([4 x i32]* @reltable.tlsver2str to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @.str.4 to i64), i64 ptrtoint ([4 x i32]* @reltable.tlsver2str to i64)) to i32)]
define i8* @tlsver2str(i32 %0) {
%2 = add i32 %0, -768
%3 = icmp ult i32 %2, 4
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 ([4 x i32]* @reltable.tlsver2str to i8*), i64 %6)
br label %8
8: ; preds = %4, %1
%9 = phi i8* [ getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), %1 ], [ %7, %4 ]
ret i8* %9
}