#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 maxLen(int *, int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int n, a[1000], i;
  printf("Please input the number of intergers:");
  scanf("%d", &n);
  printf("Please input the integers:");
  for (i = 0; i < n; i++)
    scanf("%d", &a[i]);
  printf("The longest level is:%d\n", maxLen(a, n));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xfc0,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeb7(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
lea    0xecf(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0xfb4(%rbp)
mov    -0xfb4(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11bc <main+0x8c>
movslq -0xfb4(%rbp),%rax
lea    -0xfb0(%rbp),%rsi
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe83(%rip),%rdi
call   1050 <scanf@plt>
mov    -0xfb4(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xfb4(%rbp)
jmp    1178 <main+0x48>
lea    -0xfb0(%rbp),%rdi
mov    -0x8(%rbp),%esi
call   1030 <maxLen@plt>
mov    %eax,%esi
lea    0xe70(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
xor    %eax,%eax
add    $0xfc0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0xfb0,%rsp
lea    0xebd(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xed5(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1050 <scanf@plt>
lea    0xec7(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0xc(%rsp),%esi
test   %esi,%esi
jle    119d <main+0x6d>
lea    0x10(%rsp),%r15
xor    %ebx,%ebx
lea    0xea7(%rip),%r14
nop
mov    %r14,%rdi
mov    %r15,%rsi
call   1050 <scanf@plt>
add    $0x1,%rbx
movslq 0xc(%rsp),%rsi
add    $0x4,%r15
cmp    %rsi,%rbx
jl     1180 <main+0x50>
lea    0x10(%rsp),%rdi
call   1030 <maxLen@plt>
lea    0xe96(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0xfb0,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [38 x i8] c"Please input the number of intergers:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [27 x i8] c"Please input the integers:\00"
@.str.3 = [25 x i8] c"The longest level is:%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca [1000 x i32]
%4 = alloca i32
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([38 x i8], [38 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %4
br label %8
8: ; preds = %17, %0
%9 = load i32, i32* %4
%10 = load i32, i32* %2
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %20
12: ; preds = %8
%13 = load i32, i32* %4
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds [1000 x i32], [1000 x i32]* %3, i64 0, i64 %14
%16 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %15)
br label %17
17: ; preds = %12
%18 = load i32, i32* %4
%19 = add nsw i32 %18, 1
store i32 %19, i32* %4
br label %8
20: ; preds = %8
%21 = getelementptr inbounds [1000 x i32], [1000 x i32]* %3, i64 0, i64 0
%22 = load i32, i32* %2
%23 = call i32 @maxLen(i32* %21, i32 %22)
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 %23)
ret i32 0
}

LLVM IR (-O2):
@.str = [38 x i8] c"Please input the number of intergers:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [27 x i8] c"Please input the integers:\00"
@.str.3 = [25 x i8] c"The longest level is:%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [1000 x i32]
%3 = bitcast i32* %1 to i8*
%4 = bitcast [1000 x i32]* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%7 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @.str.2, i64 0, i64 0))
%8 = load i32, i32* %1
%9 = icmp sgt i32 %8, 0
br i1 %9, label %10, label %18
10: ; preds = %0, %10
%11 = phi i64 [ %14, %10 ], [ 0, %0 ]
%12 = getelementptr inbounds [1000 x i32], [1000 x i32]* %2, i64 0, i64 %11
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %12)
%14 = add nuw nsw i64 %11, 1
%15 = load i32, i32* %1
%16 = sext i32 %15 to i64
%17 = icmp slt i64 %14, %16
br i1 %17, label %10, label %18
18: ; preds = %10, %0
%19 = phi i32 [ %8, %0 ], [ %15, %10 ]
%20 = getelementptr inbounds [1000 x i32], [1000 x i32]* %2, i64 0, i64 0
%21 = call i32 @maxLen(i32* %20, i32 %19)
%22 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 %21)
ret i32 0
}