#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 */
int /*<<< orphan*/ assert(int /*<<< orphan*/);
unsigned char xtoi(char c) {
  unsigned char ll;
  if (c >= '0' && c <= '9')
    ll = c - '0';
  else if (c >= 'a' && c <= 'f')
    ll = c - 'a' + 10;
  else if (c >= 'A' && c < -'F')
    ll = c - 'A' + 10;
  else
    assert(0);
  return ll;
}


x86 assembly (clang, -O0):
<xtoi>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %dil,%al
mov    %al,-0x1(%rbp)
movsbl -0x1(%rbp),%eax
cmp    $0x30,%eax
jl     1147 <xtoi+0x37>
movsbl -0x1(%rbp),%eax
cmp    $0x39,%eax
jg     1147 <xtoi+0x37>
movsbl -0x1(%rbp),%eax
sub    $0x30,%eax
mov    %al,-0x2(%rbp)
jmp    11b0 <xtoi+0xa0>
movsbl -0x1(%rbp),%eax
cmp    $0x61,%eax
jl     1173 <xtoi+0x63>
movsbl -0x1(%rbp),%eax
cmp    $0x66,%eax
jg     1173 <xtoi+0x63>
movsbl -0x1(%rbp),%eax
sub    $0x61,%eax
add    $0xa,%eax
mov    %al,-0x2(%rbp)
jmp    11ab <xtoi+0x9b>
movsbl -0x1(%rbp),%eax
cmp    $0x41,%eax
jl     119f <xtoi+0x8f>
movsbl -0x1(%rbp),%eax
cmp    $0xffffffba,%eax
jge    119f <xtoi+0x8f>
movsbl -0x1(%rbp),%eax
sub    $0x41,%eax
add    $0xa,%eax
mov    %al,-0x2(%rbp)
jmp    11a6 <xtoi+0x96>
xor    %edi,%edi
call   1030 <assert@plt>
jmp    11ab <xtoi+0x9b>
jmp    11b0 <xtoi+0xa0>
movzbl -0x2(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<xtoi>:
lea    -0x30(%rdi),%eax
cmp    $0xa,%al
jb     1131 <xtoi+0x21>
lea    -0x61(%rdi),%eax
cmp    $0x5,%al
ja     1125 <xtoi+0x15>
add    $0xa9,%dil
mov    %edi,%eax
ret
push   %rax
xor    %edi,%edi
call   1030 <assert@plt>
add    $0x8,%rsp
ret

LLVM IR (-O0):
define zeroext i8 @xtoi(i8 signext %0) {
%2 = alloca i8
%3 = alloca i8
store i8 %0, i8* %2
%4 = load i8, i8* %2
%5 = sext i8 %4 to i32
%6 = icmp sge i32 %5, 48
br i1 %6, label %7, label %16
7: ; preds = %1
%8 = load i8, i8* %2
%9 = sext i8 %8 to i32
%10 = icmp sle i32 %9, 57
br i1 %10, label %11, label %16
11: ; preds = %7
%12 = load i8, i8* %2
%13 = sext i8 %12 to i32
%14 = sub nsw i32 %13, 48
%15 = trunc i32 %14 to i8
store i8 %15, i8* %3
br label %48
16: ; preds = %7, %1
%17 = load i8, i8* %2
%18 = sext i8 %17 to i32
%19 = icmp sge i32 %18, 97
br i1 %19, label %20, label %30
20: ; preds = %16
%21 = load i8, i8* %2
%22 = sext i8 %21 to i32
%23 = icmp sle i32 %22, 102
br i1 %23, label %24, label %30
24: ; preds = %20
%25 = load i8, i8* %2
%26 = sext i8 %25 to i32
%27 = sub nsw i32 %26, 97
%28 = add nsw i32 %27, 10
%29 = trunc i32 %28 to i8
store i8 %29, i8* %3
br label %47
30: ; preds = %20, %16
%31 = load i8, i8* %2
%32 = sext i8 %31 to i32
%33 = icmp sge i32 %32, 65
br i1 %33, label %34, label %44
34: ; preds = %30
%35 = load i8, i8* %2
%36 = sext i8 %35 to i32
%37 = icmp slt i32 %36, -70
br i1 %37, label %38, label %44
38: ; preds = %34
%39 = load i8, i8* %2
%40 = sext i8 %39 to i32
%41 = sub nsw i32 %40, 65
%42 = add nsw i32 %41, 10
%43 = trunc i32 %42 to i8
store i8 %43, i8* %3
br label %46
44: ; preds = %34, %30
%45 = call i32 @assert(i32 0)
br label %46
46: ; preds = %44, %38
br label %47
47: ; preds = %46, %24
br label %48
48: ; preds = %47, %11
%49 = load i8, i8* %3
ret i8 %49
}

LLVM IR (-O2):
define zeroext i8 @xtoi(i8 signext %0) {
%2 = add i8 %0, -48
%3 = icmp ult i8 %2, 10
br i1 %3, label %11, label %4
4: ; preds = %1
%5 = add i8 %0, -97
%6 = icmp ult i8 %5, 6
br i1 %6, label %7, label %9
7: ; preds = %4
%8 = add nsw i8 %0, -87
br label %11
9: ; preds = %4
%10 = tail call i32 @assert(i32 0)
br label %11
11: ; preds = %1, %7, %9
%12 = phi i8 [ %8, %7 ], [ undef, %9 ], [ %2, %1 ]
ret i8 %12
}