#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 atoi(char *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ printf(char *, int /*<<< orphan*/);
int /*<<< orphan*/ stderr;
main(int argc, char **argv) {
  int start, how_many;
  if (argc != 3) {
    fprintf(stderr, "Usage: %s start how_many\n", argv[0]);
    exit(1);
  }
  start = atoi(argv[1]);
  how_many = atoi(argv[2]);
  while (how_many--)
    printf("%d\n", start++);
  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   $0x3,-0x8(%rbp)
je     1186 <main+0x46>
mov    0x2e79(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe89(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x18(%rbp)
mov    -0x18(%rbp),%eax
mov    %eax,%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0x18(%rbp)
cmp    $0x0,%eax
je     11d6 <main+0x96>
mov    -0x14(%rbp),%esi
mov    %esi,%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
lea    0xe4e(%rip),%rdi
call   1030 <printf@plt>
jmp    11a6 <main+0x66>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
mov    %rsi,%r14
cmp    $0x3,%edi
jne    1189 <main+0x49>
mov    0x10(%r14),%rdi
call   1050 <atoi@plt>
test   %eax,%eax
je     1182 <main+0x42>
mov    %eax,%ebx
mov    0x8(%r14),%rdi
call   1050 <atoi@plt>
mov    %eax,%esi
lea    0xead(%rip),%r14
nopl   (%rax)
lea    0x1(%rsi),%ebp
mov    %r14,%rdi
call   1030 <printf@plt>
mov    %ebp,%esi
add    $0xffffffff,%ebx
jne    1170 <main+0x30>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
mov    0x2e50(%rip),%rax
mov    (%rax),%edi
mov    (%r14),%rdx
lea    0xe64(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [26 x i8] c"Usage: %s start how_many\0A\00"
@.str.1 = [4 x i8] c"%d\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = icmp ne i32 %8, 3
br i1 %9, label %10, label %17
10: ; preds = %2
%11 = load i32, i32* @stderr
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 0
%14 = load i8*, i8** %13
%15 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i8* %14)
%16 = call i32 @exit(i32 1)
unreachable
17: ; preds = %2
%18 = load i8**, i8*** %5
%19 = getelementptr inbounds i8*, i8** %18, i64 1
%20 = load i8*, i8** %19
%21 = call i32 @atoi(i8* %20)
store i32 %21, i32* %6
%22 = load i8**, i8*** %5
%23 = getelementptr inbounds i8*, i8** %22, i64 2
%24 = load i8*, i8** %23
%25 = call i32 @atoi(i8* %24)
store i32 %25, i32* %7
br label %26
26: ; preds = %30, %17
%27 = load i32, i32* %7
%28 = add nsw i32 %27, -1
store i32 %28, i32* %7
%29 = icmp ne i32 %27, 0
br i1 %29, label %30, label %34
30: ; preds = %26
%31 = load i32, i32* %6
%32 = add nsw i32 %31, 1
store i32 %32, i32* %6
%33 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %31)
br label %26
34: ; preds = %26
ret i32 0
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [26 x i8] c"Usage: %s start how_many\0A\00"
@.str.1 = [4 x i8] c"%d\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %9, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i8* %6)
%8 = tail call i32 @exit(i32 1)
unreachable
9: ; preds = %2
%10 = getelementptr inbounds i8*, i8** %1, i64 2
%11 = load i8*, i8** %10
%12 = tail call i32 @atoi(i8* %11)
%13 = icmp eq i32 %12, 0
br i1 %13, label %25, label %14
14: ; preds = %9
%15 = getelementptr inbounds i8*, i8** %1, i64 1
%16 = load i8*, i8** %15
%17 = tail call i32 @atoi(i8* %16)
br label %18
18: ; preds = %14, %18
%19 = phi i32 [ %21, %18 ], [ %12, %14 ]
%20 = phi i32 [ %22, %18 ], [ %17, %14 ]
%21 = add nsw i32 %19, -1
%22 = add nsw i32 %20, 1
%23 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %20)
%24 = icmp eq i32 %21, 0
br i1 %24, label %25, label %18
25: ; preds = %18, %9
ret i32 0
}