#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 IsSidechainAtom(char *atomname) {
  if (!strcmp(atomname, "C") || !strcmp(atomname, "N") ||
      !strcmp(atomname, "O") || !strcmp(atomname, "CA") ||
      !strcmp(atomname, "OCT") || !strcmp(atomname, "OXT"))
    return 0;
  else
    return 1;
}


x86 assembly (clang, -O0):
<IsSidechainAtom>:
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     11b2 <IsSidechainAtom+0xa2>
mov    -0x10(%rbp),%rdi
lea    0xec2(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11b2 <IsSidechainAtom+0xa2>
mov    -0x10(%rbp),%rdi
lea    0xeab(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11b2 <IsSidechainAtom+0xa2>
mov    -0x10(%rbp),%rdi
lea    0xe94(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11b2 <IsSidechainAtom+0xa2>
mov    -0x10(%rbp),%rdi
lea    0xe7e(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
je     11b2 <IsSidechainAtom+0xa2>
mov    -0x10(%rbp),%rdi
lea    0xe69(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11be <IsSidechainAtom+0xae>
movl   $0x0,-0x4(%rbp)
jmp    11c5 <IsSidechainAtom+0xb5>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<IsSidechainAtom>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %eax,%eax
je     118b <IsSidechainAtom+0x7b>
lea    0xed3(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118b <IsSidechainAtom+0x7b>
lea    0xec2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118b <IsSidechainAtom+0x7b>
lea    0xeb1(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118b <IsSidechainAtom+0x7b>
lea    0xea1(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118b <IsSidechainAtom+0x7b>
lea    0xe92(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %eax,%eax
setne  %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"C\00"
@.str.1 = [2 x i8] c"N\00"
@.str.2 = [2 x i8] c"O\00"
@.str.3 = [3 x i8] c"CA\00"
@.str.4 = [4 x i8] c"OCT\00"
@.str.5 = [4 x i8] c"OXT\00"
define i32 @IsSidechainAtom(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 %27
7: ; preds = %1
%8 = load i8*, i8** %3
%9 = call i32 @strcmp(i8* %8, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%10 = icmp ne i32 %9, 0
br i1 %10, label %11, label %27
11: ; preds = %7
%12 = load i8*, i8** %3
%13 = call i32 @strcmp(i8* %12, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%14 = icmp ne i32 %13, 0
br i1 %14, label %15, label %27
15: ; preds = %11
%16 = load i8*, i8** %3
%17 = call i32 @strcmp(i8* %16, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
%18 = icmp ne i32 %17, 0
br i1 %18, label %19, label %27
19: ; preds = %15
%20 = load i8*, i8** %3
%21 = call i32 @strcmp(i8* %20, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%22 = icmp ne i32 %21, 0
br i1 %22, label %23, label %27
23: ; preds = %19
%24 = load i8*, i8** %3
%25 = call i32 @strcmp(i8* %24, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0))
%26 = icmp ne i32 %25, 0
br i1 %26, label %28, label %27
27: ; preds = %23, %19, %15, %11, %7, %1
store i32 0, i32* %2
br label %29
28: ; preds = %23
store i32 1, i32* %2
br label %29
29: ; preds = %28, %27
%30 = load i32, i32* %2
ret i32 %30
}

LLVM IR (-O2):
@.str = [2 x i8] c"C\00"
@.str.1 = [2 x i8] c"N\00"
@.str.2 = [2 x i8] c"O\00"
@.str.3 = [3 x i8] c"CA\00"
@.str.4 = [4 x i8] c"OCT\00"
@.str.5 = [4 x i8] c"OXT\00"
define i32 @IsSidechainAtom(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 %20, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(2) getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %20, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(2) getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br i1 %9, label %20, label %10
10: ; preds = %7
%11 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i32 %11, 0
br i1 %12, label %20, label %13
13: ; preds = %10
%14 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i32 %14, 0
br i1 %15, label %20, label %16
16: ; preds = %13
%17 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp ne i32 %17, 0
%19 = zext i1 %18 to i32
br label %20
20: ; preds = %16, %1, %4, %7, %10, %13
%21 = phi i32 [ 0, %13 ], [ 0, %10 ], [ 0, %7 ], [ 0, %4 ], [ 0, %1 ], [ %19, %16 ]
ret i32 %21
}