#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 parse_command(char *command) {
  if (!strcmp(command, "/list")) {
    return 1;
  } else if (!strcmp(command, "/start")) {
    return 3;
  } else if (!strcmp(command, "/stop")) {
    return 2;
  } else if (!strcmp(command, "/quit")) {
    return 0;
  } else {
    return 255;
  }
}


x86 assembly (clang, -O0):
<parse_command>:
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
jne    1141 <parse_command+0x31>
movl   $0x1,-0x4(%rbp)
jmp    11b7 <parse_command+0xa7>
mov    -0x10(%rbp),%rdi
lea    0xeba(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1166 <parse_command+0x56>
movl   $0x3,-0x4(%rbp)
jmp    11b7 <parse_command+0xa7>
mov    -0x10(%rbp),%rdi
lea    0xe9c(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    118b <parse_command+0x7b>
movl   $0x2,-0x4(%rbp)
jmp    11b7 <parse_command+0xa7>
mov    -0x10(%rbp),%rdi
lea    0xe7d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11b0 <parse_command+0xa0>
movl   $0x0,-0x4(%rbp)
jmp    11b7 <parse_command+0xa7>
movl   $0xff,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<parse_command>:
push   %rbx
mov    %rdi,%rbx
lea    0xee5(%rip),%rsi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1167 <parse_command+0x57>
lea    0xedb(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     116e <parse_command+0x5e>
lea    0xecf(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1175 <parse_command+0x65>
lea    0xec2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    %eax,%ecx
test   %eax,%eax
mov    $0xff,%eax
cmove  %ecx,%eax
pop    %rbx
ret
mov    $0x1,%eax
pop    %rbx
ret
mov    $0x3,%eax
pop    %rbx
ret
mov    $0x2,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [6 x i8] c"/list\00"
@.str.1 = [7 x i8] c"/start\00"
@.str.2 = [6 x i8] c"/stop\00"
@.str.3 = [6 x i8] c"/quit\00"
define i32 @parse_command(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 ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%6 = icmp ne i32 %5, 0
br i1 %6, label %8, label %7
7: ; preds = %1
store i32 1, i32* %2
br label %24
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i32 @strcmp(i8* %9, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0))
%11 = icmp ne i32 %10, 0
br i1 %11, label %13, label %12
12: ; preds = %8
store i32 3, i32* %2
br label %24
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i32 @strcmp(i8* %14, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0))
%16 = icmp ne i32 %15, 0
br i1 %16, label %18, label %17
17: ; preds = %13
store i32 2, i32* %2
br label %24
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i32 @strcmp(i8* %19, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%21 = icmp ne i32 %20, 0
br i1 %21, label %23, label %22
22: ; preds = %18
store i32 0, i32* %2
br label %24
23: ; preds = %18
store i32 255, i32* %2
br label %24
24: ; preds = %23, %22, %17, %12, %7
%25 = load i32, i32* %2
ret i32 %25
}

LLVM IR (-O2):
@.str = [6 x i8] c"/list\00"
@.str.1 = [7 x i8] c"/start\00"
@.str.2 = [6 x i8] c"/stop\00"
@.str.3 = [6 x i8] c"/quit\00"
define i32 @parse_command(i8* nocapture %0) {
%2 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32 %2, 0
br i1 %3, label %14, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %14, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br i1 %9, label %14, label %10
10: ; preds = %7
%11 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(6) getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i32 %11, 0
%13 = select i1 %12, i32 0, i32 255
br label %14
14: ; preds = %10, %7, %4, %1
%15 = phi i32 [ 1, %1 ], [ 3, %4 ], [ 2, %7 ], [ %13, %10 ]
ret i32 %15
}