#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*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  if (argc == 1) {
    printf("You didn't give any arguments!\n");
    return 1;
  } else if (argc > 1 && argc < 4) {
    printf("Here's your arguments:\n");
    for (int i = 0; i < argc; i++) {
      printf("%s ", argv[i]);
    }
    printf("\n");
  } else {
    printf("Only 2 arguments are allowed; you gave %d.\n", argc - 1);
    return 1;
  }
  return 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)
cmpl   $0x1,-0x8(%rbp)
jne    114a <main+0x3a>
lea    0xec9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11e6 <main+0xd6>
cmpl   $0x1,-0x8(%rbp)
jle    11ba <main+0xaa>
cmpl   $0x4,-0x8(%rbp)
jge    11ba <main+0xaa>
lea    0xebb(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11a7 <main+0x97>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rsi
lea    0xea6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1173 <main+0x63>
lea    0xe70(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11da <main+0xca>
mov    -0x8(%rbp),%esi
sub    $0x1,%esi
lea    0xe75(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11e6 <main+0xd6>
jmp    11df <main+0xcf>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
cmp    $0x1,%edi
jne    114a <main+0x1a>
lea    0xf04(%rip),%rdi
call   1040 <puts@plt>
jmp    11a8 <main+0x78>
mov    %edi,%ebp
mov    %edi,%eax
and    $0xfffffffe,%eax
cmp    $0x2,%eax
jne    1195 <main+0x65>
mov    %rsi,%r15
lea    0xed0(%rip),%rdi
call   1040 <puts@plt>
mov    %ebp,%ebp
lea    0xe92(%rip),%r14
xor    %ebx,%ebx
mov    (%r15,%rbx,8),%rsi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%rbp
jne    1170 <main+0x40>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
jmp    11ad <main+0x7d>
add    $0xffffffff,%ebp
lea    0xe65(%rip),%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0x1,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [32 x i8] c"You didn't give any arguments!\0A\00"
@.str.1 = [24 x i8] c"Here's your arguments:\0A\00"
@.str.2 = [4 x i8] c"%s \00"
@.str.3 = [2 x i8] c"\0A\00"
@.str.4 = [44 x i8] c"Only 2 arguments are allowed; you gave %d.\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
%7 = load i32, i32* %4
%8 = icmp eq i32 %7, 1
br i1 %8, label %9, label %11
9: ; preds = %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
store i32 1, i32* %3
br label %41
11: ; preds = %2
%12 = load i32, i32* %4
%13 = icmp sgt i32 %12, 1
br i1 %13, label %14, label %35
14: ; preds = %11
%15 = load i32, i32* %4
%16 = icmp slt i32 %15, 4
br i1 %16, label %17, label %35
17: ; preds = %14
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %6
br label %19
19: ; preds = %30, %17
%20 = load i32, i32* %6
%21 = load i32, i32* %4
%22 = icmp slt i32 %20, %21
br i1 %22, label %23, label %33
23: ; preds = %19
%24 = load i8**, i8*** %5
%25 = load i32, i32* %6
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds i8*, i8** %24, i64 %26
%28 = load i8*, i8** %27
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i8* %28)
br label %30
30: ; preds = %23
%31 = load i32, i32* %6
%32 = add nsw i32 %31, 1
store i32 %32, i32* %6
br label %19
33: ; preds = %19
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %39
35: ; preds = %14, %11
%36 = load i32, i32* %4
%37 = sub nsw i32 %36, 1
%38 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.4, i64 0, i64 0), i32 %37)
store i32 1, i32* %3
br label %41
39: ; preds = %33
br label %40
40: ; preds = %39
store i32 0, i32* %3
br label %41
41: ; preds = %40, %35, %9
%42 = load i32, i32* %3
ret i32 %42
}

LLVM IR (-O2):
@.str.2 = [4 x i8] c"%s \00"
@.str.4 = [44 x i8] c"Only 2 arguments are allowed; you gave %d.\0A\00"
@str = [23 x i8] c"Here's your arguments:\00"
@str.5 = [31 x i8] c"You didn't give any arguments!\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 1
br i1 %3, label %4, label %6
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([31 x i8], [31 x i8]* @str.5, i64 0, i64 0))
br label %24
6: ; preds = %2
%7 = and i32 %0, -2
%8 = icmp eq i32 %7, 2
br i1 %8, label %9, label %21
9: ; preds = %6
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str, i64 0, i64 0))
%11 = zext i32 %0 to i64
br label %14
12: ; preds = %14
%13 = tail call i32 @putchar(i32 10)
br label %24
14: ; preds = %9, %14
%15 = phi i64 [ 0, %9 ], [ %19, %14 ]
%16 = getelementptr inbounds i8*, i8** %1, i64 %15
%17 = load i8*, i8** %16
%18 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i8* %17)
%19 = add nuw nsw i64 %15, 1
%20 = icmp eq i64 %19, %11
br i1 %20, label %12, label %14
21: ; preds = %6
%22 = add nsw i32 %0, -1
%23 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([44 x i8], [44 x i8]* @.str.4, i64 0, i64 0), i32 %22)
br label %24
24: ; preds = %12, %21, %4
%25 = phi i32 [ 1, %4 ], [ 0, %12 ], [ 1, %21 ]
ret i32 %25
}