#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__ strcmp(char *, char *);
int bad_symbol(char *cmnd) {
  if (strcmp(cmnd, "|") == 0 || strcmp(cmnd, "&") == 0 ||
      strcmp(cmnd, "<") == 0 || strcmp(cmnd, ">") == 0)
    return 0;
  return 1;
}


x86 assembly (clang, -O0):
<bad_symbol>:
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,%rax
je     1184 <bad_symbol+0x74>
mov    -0x10(%rbp),%rdi
lea    0xec1(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
je     1184 <bad_symbol+0x74>
mov    -0x10(%rbp),%rdi
lea    0xea9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
je     1184 <bad_symbol+0x74>
mov    -0x10(%rbp),%rdi
lea    0xe91(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1190 <bad_symbol+0x80>
movl   $0x0,-0x4(%rbp)
jmp    1197 <bad_symbol+0x87>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<bad_symbol>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %rax,%rax
je     1169 <bad_symbol+0x59>
lea    0xed2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1169 <bad_symbol+0x59>
lea    0xec0(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1169 <bad_symbol+0x59>
lea    0xeae(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %rax,%rax
setne  %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"|\00"
@.str.1 = [2 x i8] c"&\00"
@.str.2 = [2 x i8] c"<\00"
@.str.3 = [2 x i8] c">\00"
define i32 @bad_symbol(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strcmp(i8* %4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %19, label %7
7: ; preds = %1
%8 = load i8*, i8** %3
%9 = call i64 @strcmp(i8* %8, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%10 = icmp eq i64 %9, 0
br i1 %10, label %19, label %11
11: ; preds = %7
%12 = load i8*, i8** %3
%13 = call i64 @strcmp(i8* %12, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%14 = icmp eq i64 %13, 0
br i1 %14, label %19, label %15
15: ; preds = %11
%16 = load i8*, i8** %3
%17 = call i64 @strcmp(i8* %16, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%18 = icmp eq i64 %17, 0
br i1 %18, label %19, label %20
19: ; preds = %15, %11, %7, %1
store i32 0, i32* %2
br label %21
20: ; preds = %15
store i32 1, i32* %2
br label %21
21: ; preds = %20, %19
%22 = load i32, i32* %2
ret i32 %22
}

LLVM IR (-O2):
@.str = [2 x i8] c"|\00"
@.str.1 = [2 x i8] c"&\00"
@.str.2 = [2 x i8] c"<\00"
@.str.3 = [2 x i8] c">\00"
define i32 @bad_symbol(i8* %0) {
%2 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %14, label %4
4: ; preds = %1
%5 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %14, label %7
7: ; preds = %4
%8 = tail call i64 @strcmp(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 %14, label %10
10: ; preds = %7
%11 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp ne i64 %11, 0
%13 = zext i1 %12 to i32
br label %14
14: ; preds = %10, %1, %4, %7
%15 = phi i32 [ 0, %7 ], [ 0, %4 ], [ 0, %1 ], [ %13, %10 ]
ret i32 %15
}