#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*/ strcmp(char *, char *);
int is_keyword(char *lexeme) {
  switch (lexeme[0]) {
  case 'a':
    if (!strcmp(lexeme, "auto"))
      return 1;
    return 0;
  case 'b':
    if (!strcmp(lexeme, "break"))
      return 1;
    return 0;
  case 'c':
    if (!strcmp(lexeme, "case") || !strcmp(lexeme, "char") ||
        !strcmp(lexeme, "const") || !strcmp(lexeme, "continue"))
      return 1;
    return 0;
  case 'd':
    if (!strcmp(lexeme, "default") || !strcmp(lexeme, "do") ||
        !strcmp(lexeme, "double"))
      return 1;
    return 0;
  case 'e':
    if (!strcmp(lexeme, "else") || !strcmp(lexeme, "enum") ||
        !strcmp(lexeme, "extern"))
      return 1;
    return 0;
  case 'f':
    if (!strcmp(lexeme, "float") || !strcmp(lexeme, "for"))
      return 1;
    return 0;
  case 'g':
    if (!strcmp(lexeme, "goto"))
      return 1;
    return 0;
  case 'i':
    if (!strcmp(lexeme, "int") || !strcmp(lexeme, "if"))
      return 1;
    return 0;
  case 'l':
    if (!strcmp(lexeme, "long"))
      return 1;
    return 0;
  case 'r':
    if (!strcmp(lexeme, "register") || !strcmp(lexeme, "return"))
      return 1;
    return 0;
  case 's':
    if (!strcmp(lexeme, "short") || !strcmp(lexeme, "signed") ||
        !strcmp(lexeme, "sizeof") || !strcmp(lexeme, "static") ||
        !strcmp(lexeme, "struct") || !strcmp(lexeme, "switch"))
      return 1;
    return 0;
  case 't':
    if (!strcmp(lexeme, "typedef"))
      return 1;
    return 0;
  case 'u':
    if (!strcmp(lexeme, "union") || !strcmp(lexeme, "unsigned"))
      return 1;
    return 0;
  case 'v':
    if (!strcmp(lexeme, "void") || !strcmp(lexeme, "volatile"))
      return 1;
    return 0;
  case 'w':
    if (!strcmp(lexeme, "while"))
      return 1;
    return 0;
  default:
    return 0;
  }
}


x86 assembly (clang, -O0):
<is_keyword>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rax
movsbl (%rax),%eax
add    $0xffffff9f,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x16,%eax
ja     15d1 <is_keyword+0x4c1>
mov    -0x18(%rbp),%rax
lea    0xec0(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
mov    -0x10(%rbp),%rdi
lea    0xf08(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    116e <is_keyword+0x5e>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xedc(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    119f <is_keyword+0x8f>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xeb1(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     120f <is_keyword+0xff>
mov    -0x10(%rbp),%rdi
lea    0xe9d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     120f <is_keyword+0xff>
mov    -0x10(%rbp),%rdi
lea    0xe89(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     120f <is_keyword+0xff>
mov    -0x10(%rbp),%rdi
lea    0xe76(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    121b <is_keyword+0x10b>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xe4e(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1272 <is_keyword+0x162>
mov    -0x10(%rbp),%rdi
lea    0xe3d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1272 <is_keyword+0x162>
mov    -0x10(%rbp),%rdi
lea    0xe27(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    127e <is_keyword+0x16e>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xdfd(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     12d5 <is_keyword+0x1c5>
mov    -0x10(%rbp),%rdi
lea    0xde9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     12d5 <is_keyword+0x1c5>
mov    -0x10(%rbp),%rdi
lea    0xdd5(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    12e1 <is_keyword+0x1d1>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xdab(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     131f <is_keyword+0x20f>
mov    -0x10(%rbp),%rdi
lea    0xd98(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    132b <is_keyword+0x21b>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xd6b(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    135c <is_keyword+0x24c>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xd3f(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     139a <is_keyword+0x28a>
mov    -0x10(%rbp),%rdi
lea    0xd2a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    13a6 <is_keyword+0x296>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xcfc(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    13d7 <is_keyword+0x2c7>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xcd0(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1415 <is_keyword+0x305>
mov    -0x10(%rbp),%rdi
lea    0xcc0(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1421 <is_keyword+0x311>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xc96(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     14c3 <is_keyword+0x3b3>
mov    -0x10(%rbp),%rdi
lea    0xcaf(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     14c3 <is_keyword+0x3b3>
mov    -0x10(%rbp),%rdi
lea    0xc6a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     14c3 <is_keyword+0x3b3>
mov    -0x10(%rbp),%rdi
lea    0xc58(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     14c3 <is_keyword+0x3b3>
mov    -0x10(%rbp),%rdi
lea    0xc46(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     14c3 <is_keyword+0x3b3>
mov    -0x10(%rbp),%rdi
lea    0xc34(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    14cf <is_keyword+0x3bf>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xc0a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1500 <is_keyword+0x3f0>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xbe1(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     153e <is_keyword+0x42e>
mov    -0x10(%rbp),%rdi
lea    0xbce(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    154a <is_keyword+0x43a>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xba6(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1588 <is_keyword+0x478>
mov    -0x10(%rbp),%rdi
lea    0xb92(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1594 <is_keyword+0x484>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
mov    -0x10(%rbp),%rdi
lea    0xb6a(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    15c5 <is_keyword+0x4b5>
movl   $0x1,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
jmp    15d8 <is_keyword+0x4c8>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<is_keyword>:
push   %rbp
push   %rbx
push   %rax
movsbl (%rdi),%eax
xor    %ebp,%ebp
add    $0xffffff9f,%eax
cmp    $0x16,%eax
ja     1370 <is_keyword+0x260>
mov    %rdi,%rbx
lea    0xed2(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xf1e(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xf17(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xf11(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x1,%bpl
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xefc(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xeea(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xed9(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xed6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x1,%bpl
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xeb0(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xeab(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x1,%bpl
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xe96(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xe84(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe7f(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1356 <is_keyword+0x246>
lea    0xe6e(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe66(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe5f(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1356 <is_keyword+0x246>
lea    0xe4c(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe43(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe3c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1356 <is_keyword+0x246>
lea    0xe2e(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xe29(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x1,%bpl
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xe41(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xdfe(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xdee(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xde2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1370 <is_keyword+0x260>
lea    0xdd6(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xdd4(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xdd3(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1356 <is_keyword+0x246>
lea    0xdc6(%rip),%rsi
jmp    1362 <is_keyword+0x252>
lea    0xdc6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1356 <is_keyword+0x246>
lea    0xdb8(%rip),%rsi
jmp    1362 <is_keyword+0x252>
mov    $0x1,%bpl
jmp    1370 <is_keyword+0x260>
lea    0xdb3(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
sete   %bpl
movzbl %bpl,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [5 x i8] c"auto\00"
@.str.1 = [6 x i8] c"break\00"
@.str.2 = [5 x i8] c"case\00"
@.str.3 = [5 x i8] c"char\00"
@.str.4 = [6 x i8] c"const\00"
@.str.5 = [9 x i8] c"continue\00"
@.str.6 = [8 x i8] c"default\00"
@.str.7 = [3 x i8] c"do\00"
@.str.8 = [7 x i8] c"double\00"
@.str.9 = [5 x i8] c"else\00"
@.str.10 = [5 x i8] c"enum\00"
@.str.11 = [7 x i8] c"extern\00"
@.str.12 = [6 x i8] c"float\00"
@.str.13 = [4 x i8] c"for\00"
@.str.14 = [5 x i8] c"goto\00"
@.str.15 = [4 x i8] c"int\00"
@.str.16 = [3 x i8] c"if\00"
@.str.17 = [5 x i8] c"long\00"
@.str.18 = [9 x i8] c"register\00"
@.str.19 = [7 x i8] c"return\00"
@.str.20 = [6 x i8] c"short\00"
@.str.21 = [7 x i8] c"signed\00"
@.str.22 = [7 x i8] c"sizeof\00"
@.str.23 = [7 x i8] c"static\00"
@.str.24 = [7 x i8] c"struct\00"
@.str.25 = [7 x i8] c"switch\00"
@.str.26 = [8 x i8] c"typedef\00"
@.str.27 = [6 x i8] c"union\00"
@.str.28 = [9 x i8] c"unsigned\00"
@.str.29 = [5 x i8] c"void\00"
@.str.30 = [9 x i8] c"volatile\00"
@.str.31 = [6 x i8] c"while\00"
define i32 @is_keyword(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = getelementptr inbounds i8, i8* %4, i64 0
%6 = load i8, i8* %5
%7 = sext i8 %6 to i32
switch i32 %7, label %166 [
i32 97, label %8
i32 98, label %14
i32 99, label %20
i32 100, label %38
i32 101, label %52
i32 102, label %66
i32 103, label %76
i32 105, label %82
i32 108, label %92
i32 114, label %98
i32 115, label %108
i32 116, label %134
i32 117, label %140
i32 118, label %150
i32 119, label %160
]
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i32 @strcmp(i8* %9, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%11 = icmp ne i32 %10, 0
br i1 %11, label %13, label %12
12: ; preds = %8
store i32 1, i32* %2
br label %167
13: ; preds = %8
store i32 0, i32* %2
br label %167
14: ; preds = %1
%15 = load i8*, i8** %3
%16 = call i32 @strcmp(i8* %15, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%17 = icmp ne i32 %16, 0
br i1 %17, label %19, label %18
18: ; preds = %14
store i32 1, i32* %2
br label %167
19: ; preds = %14
store i32 0, i32* %2
br label %167
20: ; preds = %1
%21 = load i8*, i8** %3
%22 = call i32 @strcmp(i8* %21, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%23 = icmp ne i32 %22, 0
br i1 %23, label %24, label %36
24: ; preds = %20
%25 = load i8*, i8** %3
%26 = call i32 @strcmp(i8* %25, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%27 = icmp ne i32 %26, 0
br i1 %27, label %28, label %36
28: ; preds = %24
%29 = load i8*, i8** %3
%30 = call i32 @strcmp(i8* %29, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0))
%31 = icmp ne i32 %30, 0
br i1 %31, label %32, label %36
32: ; preds = %28
%33 = load i8*, i8** %3
%34 = call i32 @strcmp(i8* %33, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
%35 = icmp ne i32 %34, 0
br i1 %35, label %37, label %36
36: ; preds = %32, %28, %24, %20
store i32 1, i32* %2
br label %167
37: ; preds = %32
store i32 0, i32* %2
br label %167
38: ; preds = %1
%39 = load i8*, i8** %3
%40 = call i32 @strcmp(i8* %39, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0))
%41 = icmp ne i32 %40, 0
br i1 %41, label %42, label %50
42: ; preds = %38
%43 = load i8*, i8** %3
%44 = call i32 @strcmp(i8* %43, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0))
%45 = icmp ne i32 %44, 0
br i1 %45, label %46, label %50
46: ; preds = %42
%47 = load i8*, i8** %3
%48 = call i32 @strcmp(i8* %47, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.8, i64 0, i64 0))
%49 = icmp ne i32 %48, 0
br i1 %49, label %51, label %50
50: ; preds = %46, %42, %38
store i32 1, i32* %2
br label %167
51: ; preds = %46
store i32 0, i32* %2
br label %167
52: ; preds = %1
%53 = load i8*, i8** %3
%54 = call i32 @strcmp(i8* %53, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.9, i64 0, i64 0))
%55 = icmp ne i32 %54, 0
br i1 %55, label %56, label %64
56: ; preds = %52
%57 = load i8*, i8** %3
%58 = call i32 @strcmp(i8* %57, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.10, i64 0, i64 0))
%59 = icmp ne i32 %58, 0
br i1 %59, label %60, label %64
60: ; preds = %56
%61 = load i8*, i8** %3
%62 = call i32 @strcmp(i8* %61, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.11, i64 0, i64 0))
%63 = icmp ne i32 %62, 0
br i1 %63, label %65, label %64
64: ; preds = %60, %56, %52
store i32 1, i32* %2
br label %167
65: ; preds = %60
store i32 0, i32* %2
br label %167
66: ; preds = %1
%67 = load i8*, i8** %3
%68 = call i32 @strcmp(i8* %67, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.12, i64 0, i64 0))
%69 = icmp ne i32 %68, 0
br i1 %69, label %70, label %74
70: ; preds = %66
%71 = load i8*, i8** %3
%72 = call i32 @strcmp(i8* %71, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
%73 = icmp ne i32 %72, 0
br i1 %73, label %75, label %74
74: ; preds = %70, %66
store i32 1, i32* %2
br label %167
75: ; preds = %70
store i32 0, i32* %2
br label %167
76: ; preds = %1
%77 = load i8*, i8** %3
%78 = call i32 @strcmp(i8* %77, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.14, i64 0, i64 0))
%79 = icmp ne i32 %78, 0
br i1 %79, label %81, label %80
80: ; preds = %76
store i32 1, i32* %2
br label %167
81: ; preds = %76
store i32 0, i32* %2
br label %167
82: ; preds = %1
%83 = load i8*, i8** %3
%84 = call i32 @strcmp(i8* %83, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.15, i64 0, i64 0))
%85 = icmp ne i32 %84, 0
br i1 %85, label %86, label %90
86: ; preds = %82
%87 = load i8*, i8** %3
%88 = call i32 @strcmp(i8* %87, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.16, i64 0, i64 0))
%89 = icmp ne i32 %88, 0
br i1 %89, label %91, label %90
90: ; preds = %86, %82
store i32 1, i32* %2
br label %167
91: ; preds = %86
store i32 0, i32* %2
br label %167
92: ; preds = %1
%93 = load i8*, i8** %3
%94 = call i32 @strcmp(i8* %93, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.17, i64 0, i64 0))
%95 = icmp ne i32 %94, 0
br i1 %95, label %97, label %96
96: ; preds = %92
store i32 1, i32* %2
br label %167
97: ; preds = %92
store i32 0, i32* %2
br label %167
98: ; preds = %1
%99 = load i8*, i8** %3
%100 = call i32 @strcmp(i8* %99, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.18, i64 0, i64 0))
%101 = icmp ne i32 %100, 0
br i1 %101, label %102, label %106
102: ; preds = %98
%103 = load i8*, i8** %3
%104 = call i32 @strcmp(i8* %103, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.19, i64 0, i64 0))
%105 = icmp ne i32 %104, 0
br i1 %105, label %107, label %106
106: ; preds = %102, %98
store i32 1, i32* %2
br label %167
107: ; preds = %102
store i32 0, i32* %2
br label %167
108: ; preds = %1
%109 = load i8*, i8** %3
%110 = call i32 @strcmp(i8* %109, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.20, i64 0, i64 0))
%111 = icmp ne i32 %110, 0
br i1 %111, label %112, label %132
112: ; preds = %108
%113 = load i8*, i8** %3
%114 = call i32 @strcmp(i8* %113, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.21, i64 0, i64 0))
%115 = icmp ne i32 %114, 0
br i1 %115, label %116, label %132
116: ; preds = %112
%117 = load i8*, i8** %3
%118 = call i32 @strcmp(i8* %117, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.22, i64 0, i64 0))
%119 = icmp ne i32 %118, 0
br i1 %119, label %120, label %132
120: ; preds = %116
%121 = load i8*, i8** %3
%122 = call i32 @strcmp(i8* %121, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.23, i64 0, i64 0))
%123 = icmp ne i32 %122, 0
br i1 %123, label %124, label %132
124: ; preds = %120
%125 = load i8*, i8** %3
%126 = call i32 @strcmp(i8* %125, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.24, i64 0, i64 0))
%127 = icmp ne i32 %126, 0
br i1 %127, label %128, label %132
128: ; preds = %124
%129 = load i8*, i8** %3
%130 = call i32 @strcmp(i8* %129, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.25, i64 0, i64 0))
%131 = icmp ne i32 %130, 0
br i1 %131, label %133, label %132
132: ; preds = %128, %124, %120, %116, %112, %108
store i32 1, i32* %2
br label %167
133: ; preds = %128
store i32 0, i32* %2
br label %167
134: ; preds = %1
%135 = load i8*, i8** %3
%136 = call i32 @strcmp(i8* %135, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.26, i64 0, i64 0))
%137 = icmp ne i32 %136, 0
br i1 %137, label %139, label %138
138: ; preds = %134
store i32 1, i32* %2
br label %167
139: ; preds = %134
store i32 0, i32* %2
br label %167
140: ; preds = %1
%141 = load i8*, i8** %3
%142 = call i32 @strcmp(i8* %141, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.27, i64 0, i64 0))
%143 = icmp ne i32 %142, 0
br i1 %143, label %144, label %148
144: ; preds = %140
%145 = load i8*, i8** %3
%146 = call i32 @strcmp(i8* %145, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.28, i64 0, i64 0))
%147 = icmp ne i32 %146, 0
br i1 %147, label %149, label %148
148: ; preds = %144, %140
store i32 1, i32* %2
br label %167
149: ; preds = %144
store i32 0, i32* %2
br label %167
150: ; preds = %1
%151 = load i8*, i8** %3
%152 = call i32 @strcmp(i8* %151, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.29, i64 0, i64 0))
%153 = icmp ne i32 %152, 0
br i1 %153, label %154, label %158
154: ; preds = %150
%155 = load i8*, i8** %3
%156 = call i32 @strcmp(i8* %155, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.30, i64 0, i64 0))
%157 = icmp ne i32 %156, 0
br i1 %157, label %159, label %158
158: ; preds = %154, %150
store i32 1, i32* %2
br label %167
159: ; preds = %154
store i32 0, i32* %2
br label %167
160: ; preds = %1
%161 = load i8*, i8** %3
%162 = call i32 @strcmp(i8* %161, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.31, i64 0, i64 0))
%163 = icmp ne i32 %162, 0
br i1 %163, label %165, label %164
164: ; preds = %160
store i32 1, i32* %2
br label %167
165: ; preds = %160
store i32 0, i32* %2
br label %167
166: ; preds = %1
store i32 0, i32* %2
br label %167
167: ; preds = %166, %165, %164, %159, %158, %149, %148, %139, %138, %133, %132, %107, %106, %97, %96, %91, %90, %81, %80, %75, %74, %65, %64, %51, %50, %37, %36, %19, %18, %13, %12
%168 = load i32, i32* %2
ret i32 %168
}

LLVM IR (-O2):
@.str = [5 x i8] c"auto\00"
@.str.1 = [6 x i8] c"break\00"
@.str.2 = [5 x i8] c"case\00"
@.str.3 = [5 x i8] c"char\00"
@.str.4 = [6 x i8] c"const\00"
@.str.5 = [9 x i8] c"continue\00"
@.str.6 = [8 x i8] c"default\00"
@.str.7 = [3 x i8] c"do\00"
@.str.8 = [7 x i8] c"double\00"
@.str.9 = [5 x i8] c"else\00"
@.str.10 = [5 x i8] c"enum\00"
@.str.11 = [7 x i8] c"extern\00"
@.str.12 = [6 x i8] c"float\00"
@.str.13 = [4 x i8] c"for\00"
@.str.14 = [5 x i8] c"goto\00"
@.str.15 = [4 x i8] c"int\00"
@.str.16 = [3 x i8] c"if\00"
@.str.17 = [5 x i8] c"long\00"
@.str.18 = [9 x i8] c"register\00"
@.str.19 = [7 x i8] c"return\00"
@.str.20 = [6 x i8] c"short\00"
@.str.21 = [7 x i8] c"signed\00"
@.str.22 = [7 x i8] c"sizeof\00"
@.str.23 = [7 x i8] c"static\00"
@.str.24 = [7 x i8] c"struct\00"
@.str.25 = [7 x i8] c"switch\00"
@.str.26 = [8 x i8] c"typedef\00"
@.str.27 = [6 x i8] c"union\00"
@.str.28 = [9 x i8] c"unsigned\00"
@.str.29 = [5 x i8] c"void\00"
@.str.30 = [9 x i8] c"volatile\00"
@.str.31 = [6 x i8] c"while\00"
define i32 @is_keyword(i8* %0) {
%2 = load i8, i8* %0
%3 = sext i8 %2 to i32
switch i32 %3, label %100 [
i32 97, label %4
i32 98, label %7
i32 99, label %10
i32 100, label %22
i32 101, label %31
i32 102, label %40
i32 103, label %46
i32 105, label %49
i32 108, label %55
i32 114, label %58
i32 115, label %64
i32 116, label %82
i32 117, label %85
i32 118, label %91
i32 119, label %97
]
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br label %100
7: ; preds = %1
%8 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br label %100
10: ; preds = %1
%11 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%12 = icmp eq i32 %11, 0
br i1 %12, label %100, label %13
13: ; preds = %10
%14 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%15 = icmp eq i32 %14, 0
br i1 %15, label %100, label %16
16: ; preds = %13
%17 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0))
%18 = icmp eq i32 %17, 0
br i1 %18, label %100, label %19
19: ; preds = %16
%20 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(9) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
%21 = icmp eq i32 %20, 0
br label %100
22: ; preds = %1
%23 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(8) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0))
%24 = icmp eq i32 %23, 0
br i1 %24, label %100, label %25
25: ; preds = %22
%26 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0))
%27 = icmp eq i32 %26, 0
br i1 %27, label %100, label %28
28: ; preds = %25
%29 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.8, i64 0, i64 0))
%30 = icmp eq i32 %29, 0
br label %100
31: ; preds = %1
%32 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.9, i64 0, i64 0))
%33 = icmp eq i32 %32, 0
br i1 %33, label %100, label %34
34: ; preds = %31
%35 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.10, i64 0, i64 0))
%36 = icmp eq i32 %35, 0
br i1 %36, label %100, label %37
37: ; preds = %34
%38 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.11, i64 0, i64 0))
%39 = icmp eq i32 %38, 0
br label %100
40: ; preds = %1
%41 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.12, i64 0, i64 0))
%42 = icmp eq i32 %41, 0
br i1 %42, label %100, label %43
43: ; preds = %40
%44 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.13, i64 0, i64 0))
%45 = icmp eq i32 %44, 0
br label %100
46: ; preds = %1
%47 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.14, i64 0, i64 0))
%48 = icmp eq i32 %47, 0
br label %100
49: ; preds = %1
%50 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.15, i64 0, i64 0))
%51 = icmp eq i32 %50, 0
br i1 %51, label %100, label %52
52: ; preds = %49
%53 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.16, i64 0, i64 0))
%54 = icmp eq i32 %53, 0
br label %100
55: ; preds = %1
%56 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.17, i64 0, i64 0))
%57 = icmp eq i32 %56, 0
br label %100
58: ; preds = %1
%59 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(9) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.18, i64 0, i64 0))
%60 = icmp eq i32 %59, 0
br i1 %60, label %100, label %61
61: ; preds = %58
%62 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.19, i64 0, i64 0))
%63 = icmp eq i32 %62, 0
br label %100
64: ; preds = %1
%65 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.20, i64 0, i64 0))
%66 = icmp eq i32 %65, 0
br i1 %66, label %100, label %67
67: ; preds = %64
%68 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.21, i64 0, i64 0))
%69 = icmp eq i32 %68, 0
br i1 %69, label %100, label %70
70: ; preds = %67
%71 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.22, i64 0, i64 0))
%72 = icmp eq i32 %71, 0
br i1 %72, label %100, label %73
73: ; preds = %70
%74 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.23, i64 0, i64 0))
%75 = icmp eq i32 %74, 0
br i1 %75, label %100, label %76
76: ; preds = %73
%77 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.24, i64 0, i64 0))
%78 = icmp eq i32 %77, 0
br i1 %78, label %100, label %79
79: ; preds = %76
%80 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.25, i64 0, i64 0))
%81 = icmp eq i32 %80, 0
br label %100
82: ; preds = %1
%83 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(8) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.26, i64 0, i64 0))
%84 = icmp eq i32 %83, 0
br label %100
85: ; preds = %1
%86 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.27, i64 0, i64 0))
%87 = icmp eq i32 %86, 0
br i1 %87, label %100, label %88
88: ; preds = %85
%89 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(9) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.28, i64 0, i64 0))
%90 = icmp eq i32 %89, 0
br label %100
91: ; preds = %1
%92 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.29, i64 0, i64 0))
%93 = icmp eq i32 %92, 0
br i1 %93, label %100, label %94
94: ; preds = %91
%95 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(9) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.30, i64 0, i64 0))
%96 = icmp eq i32 %95, 0
br label %100
97: ; preds = %1
%98 = tail call i32 @strcmp(i8* %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.31, i64 0, i64 0))
%99 = icmp eq i32 %98, 0
br label %100
100: ; preds = %94, %88, %79, %61, %52, %43, %37, %28, %19, %1, %97, %91, %85, %82, %64, %67, %70, %73, %76, %58, %55, %49, %46, %40, %31, %34, %22, %25, %10, %13, %16, %7, %4
%101 = phi i1 [ %6, %4 ], [ %9, %7 ], [ true, %16 ], [ true, %13 ], [ true, %10 ], [ true, %25 ], [ true, %22 ], [ true, %34 ], [ true, %31 ], [ true, %40 ], [ %48, %46 ], [ true, %49 ], [ %57, %55 ], [ true, %58 ], [ true, %76 ], [ true, %73 ], [ true, %70 ], [ true, %67 ], [ true, %64 ], [ %84, %82 ], [ true, %85 ], [ true, %91 ], [ %99, %97 ], [ false, %1 ], [ %21, %19 ], [ %30, %28 ], [ %39, %37 ], [ %45, %43 ], [ %54, %52 ], [ %63, %61 ], [ %81, %79 ], [ %90, %88 ], [ %96, %94 ]
%102 = zext i1 %101 to i32
ret i32 %102
}