#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 */
scalar_t__ strcasecmp(char *, char *);
char configfile_parsebool(char *value) {
  if (strcasecmp(value, "true") == 0)
    return 1;
  if (strcasecmp(value, "yes") == 0)
    return 1;
  if (strcasecmp(value, "1") == 0)
    return 1;
  if (strcasecmp(value, "false") == 0)
    return 0;
  if (strcasecmp(value, "no") == 0)
    return 0;
  if (strcasecmp(value, "0") == 0)
    return 0;
  return 2;
}


x86 assembly (clang, -O0):
<configfile_parsebool>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xed9(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    113f <configfile_parsebool+0x2f>
movb   $0x1,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
mov    -0x10(%rbp),%rdi
lea    0xebb(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    1162 <configfile_parsebool+0x52>
movb   $0x1,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
mov    -0x10(%rbp),%rdi
lea    0xe9c(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    1185 <configfile_parsebool+0x75>
movb   $0x1,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
mov    -0x10(%rbp),%rdi
lea    0xe7b(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    11a8 <configfile_parsebool+0x98>
movb   $0x0,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
mov    -0x10(%rbp),%rdi
lea    0xe5e(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    11cb <configfile_parsebool+0xbb>
movb   $0x0,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
mov    -0x10(%rbp),%rdi
lea    0xe3e(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    11ee <configfile_parsebool+0xde>
movb   $0x0,-0x1(%rbp)
jmp    11f2 <configfile_parsebool+0xe2>
movb   $0x2,-0x1(%rbp)
movsbl -0x1(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<configfile_parsebool>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcasecmp@plt>
mov    $0x1,%bpl
test   %rax,%rax
je     1197 <configfile_parsebool+0x87>
lea    0xed4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     1197 <configfile_parsebool+0x87>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     1197 <configfile_parsebool+0x87>
lea    0xeb2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     1195 <configfile_parsebool+0x85>
lea    0xea4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     1195 <configfile_parsebool+0x85>
lea    0xe93(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
setne  %bpl
add    %bpl,%bpl
jmp    1197 <configfile_parsebool+0x87>
xor    %ebp,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [5 x i8] c"true\00"
@.str.1 = [4 x i8] c"yes\00"
@.str.2 = [2 x i8] c"1\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [3 x i8] c"no\00"
@.str.5 = [2 x i8] c"0\00"
define signext i8 @configfile_parsebool(i8* %0) {
%2 = alloca i8
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strcasecmp(i8* %4, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i8 1, i8* %2
br label %34
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strcasecmp(i8* %9, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
%11 = icmp eq i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %8
store i8 1, i8* %2
br label %34
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strcasecmp(i8* %14, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%16 = icmp eq i64 %15, 0
br i1 %16, label %17, label %18
17: ; preds = %13
store i8 1, i8* %2
br label %34
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i64 @strcasecmp(i8* %19, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%21 = icmp eq i64 %20, 0
br i1 %21, label %22, label %23
22: ; preds = %18
store i8 0, i8* %2
br label %34
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = call i64 @strcasecmp(i8* %24, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%26 = icmp eq i64 %25, 0
br i1 %26, label %27, label %28
27: ; preds = %23
store i8 0, i8* %2
br label %34
28: ; preds = %23
%29 = load i8*, i8** %3
%30 = call i64 @strcasecmp(i8* %29, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%31 = icmp eq i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %28
store i8 0, i8* %2
br label %34
33: ; preds = %28
store i8 2, i8* %2
br label %34
34: ; preds = %33, %32, %27, %22, %17, %12, %7
%35 = load i8, i8* %2
ret i8 %35
}

LLVM IR (-O2):
@.str = [5 x i8] c"true\00"
@.str.1 = [4 x i8] c"yes\00"
@.str.2 = [2 x i8] c"1\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [3 x i8] c"no\00"
@.str.5 = [2 x i8] c"0\00"
define signext i8 @configfile_parsebool(i8* nocapture %0) {
%2 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %20, label %4
4: ; preds = %1
%5 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %20, label %7
7: ; preds = %4
%8 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i64 %8, 0
br i1 %9, label %20, label %10
10: ; preds = %7
%11 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i64 %11, 0
br i1 %12, label %20, label %13
13: ; preds = %10
%14 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i64 %14, 0
br i1 %15, label %20, label %16
16: ; preds = %13
%17 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp eq i64 %17, 0
%19 = select i1 %18, i8 0, i8 2
br label %20
20: ; preds = %16, %13, %10, %7, %4, %1
%21 = phi i8 [ 1, %1 ], [ 1, %4 ], [ 1, %7 ], [ 0, %10 ], [ 0, %13 ], [ %19, %16 ]
ret i8 %21
}