#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*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  int arg;
  for (arg = 0; arg < argc; arg++) {
    if (argv[arg][0] == '-')
      printf("option: %s\n", argv[arg] + 1);
    else
      printf("argument %d: %s\n", arg, argv[arg]);
  }
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11b4 <main+0x94>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
movsbl (%rax),%eax
cmp    $0x2d,%eax
jne    1184 <main+0x64>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
add    $0x1,%rsi
lea    0xe88(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11a1 <main+0x81>
mov    -0x14(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xe72(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11a6 <main+0x86>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    113d <main+0x1d>
xor    %edi,%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
test   %edi,%edi
jle    1181 <main+0x61>
mov    %rsi,%r12
mov    %edi,%r13d
lea    0xec6(%rip),%r14
lea    0xecb(%rip),%r15
xor    %ebx,%ebx
jmp    1165 <main+0x45>
cs nopw 0x0(%rax,%rax,1)
nop
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
je     1181 <main+0x61>
mov    (%r12,%rbx,8),%rdx
cmpb   $0x2d,(%rdx)
jne    1150 <main+0x30>
add    $0x1,%rdx
mov    %r14,%rdi
mov    %rdx,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
jmp    115c <main+0x3c>
xor    %edi,%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@.str = [12 x i8] c"option: %s\0A\00"
@.str.1 = [17 x i8] c"argument %d: %s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
store i32 0, i32* %6
br label %7
7: ; preds = %38, %2
%8 = load i32, i32* %6
%9 = load i32, i32* %4
%10 = icmp slt i32 %8, %9
br i1 %10, label %11, label %41
11: ; preds = %7
%12 = load i8**, i8*** %5
%13 = load i32, i32* %6
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds i8*, i8** %12, i64 %14
%16 = load i8*, i8** %15
%17 = getelementptr inbounds i8, i8* %16, i64 0
%18 = load i8, i8* %17
%19 = sext i8 %18 to i32
%20 = icmp eq i32 %19, 45
br i1 %20, label %21, label %29
21: ; preds = %11
%22 = load i8**, i8*** %5
%23 = load i32, i32* %6
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds i8*, i8** %22, i64 %24
%26 = load i8*, i8** %25
%27 = getelementptr inbounds i8, i8* %26, i64 1
%28 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %27)
br label %37
29: ; preds = %11
%30 = load i32, i32* %6
%31 = load i8**, i8*** %5
%32 = load i32, i32* %6
%33 = sext i32 %32 to i64
%34 = getelementptr inbounds i8*, i8** %31, i64 %33
%35 = load i8*, i8** %34
%36 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i32 %30, i8* %35)
br label %37
37: ; preds = %29, %21
br label %38
38: ; preds = %37
%39 = load i32, i32* %6
%40 = add nsw i32 %39, 1
store i32 %40, i32* %6
br label %7
41: ; preds = %7
%42 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str = [12 x i8] c"option: %s\0A\00"
@.str.1 = [17 x i8] c"argument %d: %s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp sgt i32 %0, 0
br i1 %3, label %4, label %21
4: ; preds = %2
%5 = zext i32 %0 to i64
br label %6
6: ; preds = %4, %18
%7 = phi i64 [ 0, %4 ], [ %19, %18 ]
%8 = getelementptr inbounds i8*, i8** %1, i64 %7
%9 = load i8*, i8** %8
%10 = load i8, i8* %9
%11 = icmp eq i8 %10, 45
br i1 %11, label %12, label %15
12: ; preds = %6
%13 = getelementptr inbounds i8, i8* %9, i64 1
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %13)
br label %18
15: ; preds = %6
%16 = trunc i64 %7 to i32
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0), i32 %16, i8* %9)
br label %18
18: ; preds = %12, %15
%19 = add nuw nsw i64 %7, 1
%20 = icmp eq i64 %19, %5
br i1 %20, label %21, label %6
21: ; preds = %18, %2
%22 = tail call i32 @exit(i32 0)
unreachable
}