#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 const *, char *);
int atobool(const char *str) {
  if (!strcmp(str, "1") || !strcmp(str, "true") || !strcmp(str, "yes"))
    return 1;
  if (!strcmp(str, "0") || !strcmp(str, "false") || !strcmp(str, "no"))
    return 0;
  return 0;
}


x86 assembly (clang, -O0):
<atobool>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xed9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1167 <atobool+0x57>
mov    -0x10(%rbp),%rdi
lea    0xec2(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     1167 <atobool+0x57>
mov    -0x10(%rbp),%rdi
lea    0xeae(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1173 <atobool+0x63>
movl   $0x1,-0x4(%rbp)
jmp    11d1 <atobool+0xc1>
mov    -0x10(%rbp),%rdi
lea    0xe8d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11be <atobool+0xae>
mov    -0x10(%rbp),%rdi
lea    0xe76(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11be <atobool+0xae>
mov    -0x10(%rbp),%rdi
lea    0xe63(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11ca <atobool+0xba>
movl   $0x0,-0x4(%rbp)
jmp    11d1 <atobool+0xc1>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<atobool>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
mov    $0x1,%ebp
test   %eax,%eax
je     1155 <atobool+0x45>
lea    0xed0(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1155 <atobool+0x45>
lea    0xec2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %eax,%eax
sete   %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"1\00"
@.str.1 = [5 x i8] c"true\00"
@.str.2 = [4 x i8] c"yes\00"
@.str.3 = [2 x i8] c"0\00"
@.str.4 = [6 x i8] c"false\00"
@.str.5 = [3 x i8] c"no\00"
define i32 @atobool(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i32 @strcmp(i8* %4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%6 = icmp ne i32 %5, 0
br i1 %6, label %7, label %15
7: ; preds = %1
%8 = load i8*, i8** %3
%9 = call i32 @strcmp(i8* %8, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%10 = icmp ne i32 %9, 0
br i1 %10, label %11, label %15
11: ; preds = %7
%12 = load i8*, i8** %3
%13 = call i32 @strcmp(i8* %12, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
%14 = icmp ne i32 %13, 0
br i1 %14, label %16, label %15
15: ; preds = %11, %7, %1
store i32 1, i32* %2
br label %30
16: ; preds = %11
%17 = load i8*, i8** %3
%18 = call i32 @strcmp(i8* %17, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%19 = icmp ne i32 %18, 0
br i1 %19, label %20, label %28
20: ; preds = %16
%21 = load i8*, i8** %3
%22 = call i32 @strcmp(i8* %21, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0))
%23 = icmp ne i32 %22, 0
br i1 %23, label %24, label %28
24: ; preds = %20
%25 = load i8*, i8** %3
%26 = call i32 @strcmp(i8* %25, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0))
%27 = icmp ne i32 %26, 0
br i1 %27, label %29, label %28
28: ; preds = %24, %20, %16
store i32 0, i32* %2
br label %30
29: ; preds = %24
store i32 0, i32* %2
br label %30
30: ; preds = %29, %28, %15
%31 = load i32, i32* %2
ret i32 %31
}

LLVM IR (-O2):
@.str = [2 x i8] c"1\00"
@.str.1 = [5 x i8] c"true\00"
@.str.2 = [4 x i8] c"yes\00"
define i32 @atobool(i8* nocapture %0) {
%2 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(2) getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32 %2, 0
br i1 %3, label %11, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %11, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
%10 = zext i1 %9 to i32
br label %11
11: ; preds = %7, %1, %4
%12 = phi i32 [ 1, %4 ], [ 1, %1 ], [ %10, %7 ]
ret i32 %12
}