#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 atoi(char *);
int /*<<< orphan*/ fatal(char *, char *);
int /*<<< orphan*/ isdigit(char);
scalar_t__ strcasecmp(char *, char *);
int getbool(char *s) {
  if (strcasecmp(s, "yes") == 0)
    return 1;
  if (strcasecmp(s, "no") == 0)
    return 0;
  if (strcasecmp(s, "true") == 0)
    return 1;
  if (strcasecmp(s, "false") == 0)
    return 0;
  if (!isdigit(s[0])) {
    fatal("\"%s\" is not an acceptable boolean\n", s);
  }
  return atoi(s);
}


x86 assembly (clang, -O0):
<getbool>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xea9(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    1172 <getbool+0x32>
movl   $0x1,-0x4(%rbp)
jmp    1215 <getbool+0xd5>
mov    -0x10(%rbp),%rdi
lea    0xe87(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    1198 <getbool+0x58>
movl   $0x0,-0x4(%rbp)
jmp    1215 <getbool+0xd5>
mov    -0x10(%rbp),%rdi
lea    0xe64(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    11be <getbool+0x7e>
movl   $0x1,-0x4(%rbp)
jmp    1215 <getbool+0xd5>
mov    -0x10(%rbp),%rdi
lea    0xe43(%rip),%rsi
call   1030 <strcasecmp@plt>
cmp    $0x0,%rax
jne    11e4 <getbool+0xa4>
movl   $0x0,-0x4(%rbp)
jmp    1215 <getbool+0xd5>
mov    -0x10(%rbp),%rax
movsbl (%rax),%edi
call   1040 <isdigit@plt>
cmp    $0x0,%eax
jne    1209 <getbool+0xc9>
mov    -0x10(%rbp),%rsi
lea    0xe0e(%rip),%rdi
call   1060 <fatal@plt>
mov    -0x10(%rbp),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<getbool>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xeb3(%rip),%rsi
call   1030 <strcasecmp@plt>
mov    $0x1,%ebp
test   %rax,%rax
je     11c8 <getbool+0x88>
lea    0xea1(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     11c6 <getbool+0x86>
lea    0xe90(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
test   %rax,%rax
je     11c8 <getbool+0x88>
lea    0xe81(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcasecmp@plt>
mov    $0x0,%ebp
test   %rax,%rax
je     11c8 <getbool+0x88>
movsbl (%rbx),%edi
call   1040 <isdigit@plt>
test   %eax,%eax
jne    11b8 <getbool+0x78>
lea    0xe62(%rip),%rdi
mov    %rbx,%rsi
call   1060 <fatal@plt>
mov    %rbx,%rdi
add    $0x8,%rsp
pop    %rbx
pop    %rbp
jmp    1050 <atoi@plt>
xor    %ebp,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [4 x i8] c"yes\00"
@.str.1 = [3 x i8] c"no\00"
@.str.2 = [5 x i8] c"true\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [35 x i8] c"\22%s\22 is not an acceptable boolean\0A\00"
define i32 @getbool(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strcasecmp(i8* %4, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 1, i32* %2
br label %35
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strcasecmp(i8* %9, i8* getelementptr inbounds ([3 x i8], [3 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 i32 0, i32* %2
br label %35
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strcasecmp(i8* %14, i8* getelementptr inbounds ([5 x i8], [5 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 i32 1, i32* %2
br label %35
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 i32 0, i32* %2
br label %35
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = getelementptr inbounds i8, i8* %24, i64 0
%26 = load i8, i8* %25
%27 = call i32 @isdigit(i8 signext %26)
%28 = icmp ne i32 %27, 0
br i1 %28, label %32, label %29
29: ; preds = %23
%30 = load i8*, i8** %3
%31 = call i32 @fatal(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.4, i64 0, i64 0), i8* %30)
br label %32
32: ; preds = %29, %23
%33 = load i8*, i8** %3
%34 = call i32 @atoi(i8* %33)
store i32 %34, i32* %2
br label %35
35: ; preds = %32, %22, %17, %12, %7
%36 = load i32, i32* %2
ret i32 %36
}

LLVM IR (-O2):
@.str = [4 x i8] c"yes\00"
@.str.1 = [3 x i8] c"no\00"
@.str.2 = [5 x i8] c"true\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [35 x i8] c"\22%s\22 is not an acceptable boolean\0A\00"
define i32 @getbool(i8* %0) {
%2 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %21, label %4
4: ; preds = %1
%5 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %21, label %7
7: ; preds = %4
%8 = tail call i64 @strcasecmp(i8* %0, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i64 %8, 0
br i1 %9, label %21, 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 %21, label %13
13: ; preds = %10
%14 = load i8, i8* %0
%15 = tail call i32 @isdigit(i8 signext %14)
%16 = icmp eq i32 %15, 0
br i1 %16, label %17, label %19
17: ; preds = %13
%18 = tail call i32 @fatal(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.4, i64 0, i64 0), i8* %0)
br label %19
19: ; preds = %17, %13
%20 = tail call i32 @atoi(i8* %0)
br label %21
21: ; preds = %10, %7, %4, %1, %19
%22 = phi i32 [ %20, %19 ], [ 1, %1 ], [ 0, %4 ], [ 1, %7 ], [ 0, %10 ]
ret i32 %22
}