#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__ strncmp(char *, char *, int);
int parseConfigBoolean(char *str) {
  if (strncmp(str, "true", 4) == 0) {
    return 1;
  } else if (strncmp(str, "1", 1) == 0) {
    return 1;
  } else if (strncmp(str, "yes", 3) == 0) {
    return 1;
  } else if (strncmp(str, "false", 5) == 0) {
    return 0;
  } else if (strncmp(str, "0", 1) == 0) {
    return 0;
  } else if (strncmp(str, "no", 2) == 0) {
    return 0;
  } else {
    return -1;
  }
}


x86 assembly (clang, -O0):
<parseConfigBoolean>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xed9(%rip),%rsi
mov    $0x4,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    1147 <parseConfigBoolean+0x37>
movl   $0x1,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
mov    -0x10(%rbp),%rdi
lea    0xeb3(%rip),%rsi
mov    $0x1,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    1172 <parseConfigBoolean+0x62>
movl   $0x1,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
mov    -0x10(%rbp),%rdi
lea    0xe8a(%rip),%rsi
mov    $0x3,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    119d <parseConfigBoolean+0x8d>
movl   $0x1,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
mov    -0x10(%rbp),%rdi
lea    0xe63(%rip),%rsi
mov    $0x5,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    11c8 <parseConfigBoolean+0xb8>
movl   $0x0,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
mov    -0x10(%rbp),%rdi
lea    0xe3e(%rip),%rsi
mov    $0x1,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    11f3 <parseConfigBoolean+0xe3>
movl   $0x0,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
mov    -0x10(%rbp),%rdi
lea    0xe15(%rip),%rsi
mov    $0x2,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
jne    121e <parseConfigBoolean+0x10e>
movl   $0x0,-0x4(%rbp)
jmp    1225 <parseConfigBoolean+0x115>
movl   $0xffffffff,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<parseConfigBoolean>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
mov    $0x4,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     11b6 <parseConfigBoolean+0xa6>
lea    0xece(%rip),%rsi
mov    $0x1,%ebp
mov    %rbx,%rdi
mov    $0x1,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     11bb <parseConfigBoolean+0xab>
lea    0xeb2(%rip),%rsi
mov    %rbx,%rdi
mov    $0x3,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     11bb <parseConfigBoolean+0xab>
lea    0xe9d(%rip),%rsi
mov    %rbx,%rdi
mov    $0x5,%edx
call   1030 <strncmp@plt>
xor    %ebp,%ebp
test   %rax,%rax
je     11bb <parseConfigBoolean+0xab>
lea    0xe88(%rip),%rsi
mov    %rbx,%rdi
mov    $0x1,%edx
call   1030 <strncmp@plt>
test   %rax,%rax
je     11bb <parseConfigBoolean+0xab>
lea    0xe71(%rip),%rsi
mov    %rbx,%rdi
mov    $0x2,%edx
call   1030 <strncmp@plt>
neg    %rax
sbb    %ebp,%ebp
jmp    11bb <parseConfigBoolean+0xab>
mov    $0x1,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [5 x i8] c"true\00"
@.str.1 = [2 x i8] c"1\00"
@.str.2 = [4 x i8] c"yes\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [2 x i8] c"0\00"
@.str.5 = [3 x i8] c"no\00"
define i32 @parseConfigBoolean(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strncmp(i8* %4, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 4)
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 1, i32* %2
br label %34
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strncmp(i8* %9, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0), i32 1)
%11 = icmp eq i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %8
store i32 1, i32* %2
br label %34
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strncmp(i8* %14, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 3)
%16 = icmp eq i64 %15, 0
br i1 %16, label %17, label %18
17: ; preds = %13
store i32 1, i32* %2
br label %34
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i64 @strncmp(i8* %19, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i32 5)
%21 = icmp eq i64 %20, 0
br i1 %21, label %22, label %23
22: ; preds = %18
store i32 0, i32* %2
br label %34
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = call i64 @strncmp(i8* %24, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0), i32 1)
%26 = icmp eq i64 %25, 0
br i1 %26, label %27, label %28
27: ; preds = %23
store i32 0, i32* %2
br label %34
28: ; preds = %23
%29 = load i8*, i8** %3
%30 = call i64 @strncmp(i8* %29, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32 2)
%31 = icmp eq i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %28
store i32 0, i32* %2
br label %34
33: ; preds = %28
store i32 -1, i32* %2
br label %34
34: ; preds = %33, %32, %27, %22, %17, %12, %7
%35 = load i32, i32* %2
ret i32 %35
}

LLVM IR (-O2):
@.str = [5 x i8] c"true\00"
@.str.1 = [2 x i8] c"1\00"
@.str.2 = [4 x i8] c"yes\00"
@.str.3 = [6 x i8] c"false\00"
@.str.4 = [2 x i8] c"0\00"
@.str.5 = [3 x i8] c"no\00"
define i32 @parseConfigBoolean(i8* %0) {
%2 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0), i32 4)
%3 = icmp eq i64 %2, 0
br i1 %3, label %20, label %4
4: ; preds = %1
%5 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0), i32 1)
%6 = icmp eq i64 %5, 0
br i1 %6, label %20, label %7
7: ; preds = %4
%8 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 3)
%9 = icmp eq i64 %8, 0
br i1 %9, label %20, label %10
10: ; preds = %7
%11 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), i32 5)
%12 = icmp eq i64 %11, 0
br i1 %12, label %20, label %13
13: ; preds = %10
%14 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0), i32 1)
%15 = icmp eq i64 %14, 0
br i1 %15, label %20, label %16
16: ; preds = %13
%17 = tail call i64 @strncmp(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.5, i64 0, i64 0), i32 2)
%18 = icmp ne i64 %17, 0
%19 = sext i1 %18 to i32
br label %20
20: ; preds = %16, %13, %10, %7, %4, %1
%21 = phi i32 [ 1, %1 ], [ 1, %4 ], [ 1, %7 ], [ 0, %10 ], [ 0, %13 ], [ %19, %16 ]
ret i32 %21
}