#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*/ stderr;
int main(int argc, char *argv[]) {
  int count, i;
  if (argc != 2) {
    fprintf(stderr, "usage: %s count(int)\n", argv[0]);
    exit(-1);
  } else {
    count = atoi(argv[1]);
    count = count * 2;
  }
  for (i = 0; i < count; i++) {
    if (i % 2 == 0) {
      printf("Hello");
    } else {
      printf("hello");
    }
  }
  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   $0x2,-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    $0xffffffff,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%eax
shl    $0x1,%eax
mov    %eax,-0x14(%rbp)
movl   $0x0,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jge    11f6 <main+0xb6>
mov    -0x18(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    11d7 <main+0x97>
lea    0xe49(%rip),%rdi
call   1030 <printf@plt>
jmp    11e3 <main+0xa3>
lea    0xe3e(%rip),%rdi
call   1030 <printf@plt>
jmp    11e8 <main+0xa8>
mov    -0x18(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x18(%rbp)
jmp    11a6 <main+0x66>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
cmp    $0x2,%edi
jne    11a4 <main+0x64>
mov    0x8(%rsi),%rdi
call   1050 <atoi@plt>
test   %eax,%eax
jle    1197 <main+0x57>
add    %eax,%eax
cmp    $0x2,%eax
mov    $0x1,%ebx
cmovge %eax,%ebx
xor    %ebp,%ebp
lea    0xea7(%rip),%r14
lea    0xea6(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
test   $0x1,%bpl
mov    %r15,%rdi
cmove  %r14,%rdi
call   1030 <printf@plt>
add    $0x1,%ebp
cmp    %ebp,%ebx
jne    1180 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret
mov    0x2e35(%rip),%rax
mov    (%rax),%edi
mov    (%rsi),%rdx
lea    0xe49(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0xffffffff,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [22 x i8] c"usage: %s count(int)\0A\00"
@.str.1 = [6 x i8] c"Hello\00"
@.str.2 = [6 x i8] c"hello\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, 2
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 ([22 x i8], [22 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 i32, i32* %6
%23 = mul nsw i32 %22, 2
store i32 %23, i32* %6
br label %24
24: ; preds = %17
store i32 0, i32* %7
br label %25
25: ; preds = %38, %24
%26 = load i32, i32* %7
%27 = load i32, i32* %6
%28 = icmp slt i32 %26, %27
br i1 %28, label %29, label %41
29: ; preds = %25
%30 = load i32, i32* %7
%31 = srem i32 %30, 2
%32 = icmp eq i32 %31, 0
br i1 %32, label %33, label %35
33: ; preds = %29
%34 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0))
br label %37
35: ; preds = %29
%36 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0))
br label %37
37: ; preds = %35, %33
br label %38
38: ; preds = %37
%39 = load i32, i32* %7
%40 = add nsw i32 %39, 1
store i32 %40, i32* %7
br label %25
41: ; preds = %25
ret i32 0
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [22 x i8] c"usage: %s count(int)\0A\00"
@.str.1 = [6 x i8] c"Hello\00"
@.str.2 = [6 x i8] c"hello\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
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 ([22 x i8], [22 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 1
%11 = load i8*, i8** %10
%12 = tail call i32 @atoi(i8* %11)
%13 = icmp sgt i32 %12, 0
br i1 %13, label %14, label %25
14: ; preds = %9
%15 = shl nuw i32 %12, 1
%16 = call i32 @llvm.smax.i32(i32 %15, i32 1)
br label %17
17: ; preds = %14, %17
%18 = phi i32 [ %23, %17 ], [ 0, %14 ]
%19 = and i32 %18, 1
%20 = icmp eq i32 %19, 0
%21 = select i1 %20, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0)
%22 = tail call i32 @printf(i8* dereferenceable(1) %21)
%23 = add nuw nsw i32 %18, 1
%24 = icmp eq i32 %23, %16
br i1 %24, label %25, label %17
25: ; preds = %17, %9
ret i32 0
}