#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 *);
char parseargs(char *arg) {
  if (!strcmp(arg, "-u"))
    return 'u';
  if (!strcmp(arg, "-d"))
    return 'd';
  if (!strcmp(arg, "-s"))
    return 's';
  if (!strcmp(arg, "-i"))
    return 'i';
  if (!strcmp(arg, "-f"))
    return 'f';
  return '\0';
}


x86 assembly (clang, -O0):
<parseargs>:
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    113e <parseargs+0x2e>
movb   $0x75,-0x1(%rbp)
jmp    11ca <parseargs+0xba>
mov    -0x10(%rbp),%rdi
lea    0xeba(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1160 <parseargs+0x50>
movb   $0x64,-0x1(%rbp)
jmp    11ca <parseargs+0xba>
mov    -0x10(%rbp),%rdi
lea    0xe9b(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    1182 <parseargs+0x72>
movb   $0x73,-0x1(%rbp)
jmp    11ca <parseargs+0xba>
mov    -0x10(%rbp),%rdi
lea    0xe7c(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11a4 <parseargs+0x94>
movb   $0x69,-0x1(%rbp)
jmp    11ca <parseargs+0xba>
mov    -0x10(%rbp),%rdi
lea    0xe5d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
jne    11c6 <parseargs+0xb6>
movb   $0x66,-0x1(%rbp)
jmp    11ca <parseargs+0xba>
movb   $0x0,-0x1(%rbp)
movsbl -0x1(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<parseargs>:
push   %rbx
mov    %rdi,%rbx
lea    0xee5(%rip),%rsi
call   1030 <strcmp@plt>
test   %eax,%eax
je     117a <parseargs+0x6a>
lea    0xed8(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     117e <parseargs+0x6e>
lea    0xec8(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1182 <parseargs+0x72>
lea    0xeb8(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     1186 <parseargs+0x76>
lea    0xea8(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ecx,%ecx
test   %eax,%eax
mov    $0x66,%eax
cmovne %ecx,%eax
pop    %rbx
ret
mov    $0x75,%al
pop    %rbx
ret
mov    $0x64,%al
pop    %rbx
ret
mov    $0x73,%al
pop    %rbx
ret
mov    $0x69,%al
pop    %rbx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"-u\00"
@.str.1 = [3 x i8] c"-d\00"
@.str.2 = [3 x i8] c"-s\00"
@.str.3 = [3 x i8] c"-i\00"
@.str.4 = [3 x i8] c"-f\00"
define signext i8 @parseargs(i8* %0) {
%2 = alloca i8
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i32 @strcmp(i8* %4, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%6 = icmp ne i32 %5, 0
br i1 %6, label %8, label %7
7: ; preds = %1
store i8 117, i8* %2
br label %29
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i32 @strcmp(i8* %9, i8* getelementptr inbounds ([3 x i8], [3 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 i8 100, i8* %2
br label %29
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i32 @strcmp(i8* %14, i8* getelementptr inbounds ([3 x i8], [3 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 i8 115, i8* %2
br label %29
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i32 @strcmp(i8* %19, i8* getelementptr inbounds ([3 x i8], [3 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 i8 105, i8* %2
br label %29
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = call i32 @strcmp(i8* %24, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%26 = icmp ne i32 %25, 0
br i1 %26, label %28, label %27
27: ; preds = %23
store i8 102, i8* %2
br label %29
28: ; preds = %23
store i8 0, i8* %2
br label %29
29: ; preds = %28, %27, %22, %17, %12, %7
%30 = load i8, i8* %2
ret i8 %30
}

LLVM IR (-O2):
@.str = [3 x i8] c"-u\00"
@.str.1 = [3 x i8] c"-d\00"
@.str.2 = [3 x i8] c"-s\00"
@.str.3 = [3 x i8] c"-i\00"
@.str.4 = [3 x i8] c"-f\00"
define signext i8 @parseargs(i8* nocapture %0) {
%2 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32 %2, 0
br i1 %3, label %17, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %17, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br i1 %9, label %17, 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 %17, label %13
13: ; preds = %10
%14 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(3) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i32 %14, 0
%16 = select i1 %15, i8 102, i8 0
br label %17
17: ; preds = %13, %10, %7, %4, %1
%18 = phi i8 [ 117, %1 ], [ 100, %4 ], [ 115, %7 ], [ 105, %10 ], [ %16, %13 ]
ret i8 %18
}