#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 *malloc(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ quick(int *, int);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  printf("Enter number of elements: ");
  int n;
  scanf("%d", &n);
  int *a = malloc(sizeof(int) * n);
  int i, j, k, l;
  printf("Enter %d integers: \n", n);
  for (i = 0; i < n; i++) {
    scanf("%d", a + i);
  }
  quick(a, n);
  printf("\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xeb7(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
movslq -0x8(%rbp),%rax
shl    $0x2,%rax
mov    %eax,%edi
call   1040 <malloc@plt>
mov    %rax,-0x10(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    11cd <main+0x8d>
mov    -0x10(%rbp),%rsi
movslq -0x14(%rbp),%rax
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe61(%rip),%rdi
call   1050 <scanf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1198 <main+0x58>
mov    -0x10(%rbp),%rdi
mov    -0x8(%rbp),%esi
call   1060 <quick@plt>
lea    0xe51(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
lea    0xea1(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xeae(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x4(%rsp),%ebx
lea    0x0(,%rbx,4),%edi
call   1050 <malloc@plt>
mov    %rax,%r14
lea    0xe8d(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jle    11cd <main+0x7d>
xor    %r12d,%r12d
lea    0xe6f(%rip),%r15
mov    %r14,%rbx
nop
mov    %r15,%rdi
mov    %rbx,%rsi
call   1060 <scanf@plt>
add    $0x1,%r12
movslq 0x4(%rsp),%rsi
add    $0x4,%rbx
cmp    %rsi,%r12
jl     11b0 <main+0x60>
mov    %r14,%rdi
call   1070 <quick@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Enter number of elements: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [21 x i8] c"Enter %d integers: \0A\00"
@.str.3 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32*
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
store i32 0, i32* %1
%8 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%10 = load i32, i32* %2
%11 = sext i32 %10 to i64
%12 = mul i64 4, %11
%13 = trunc i64 %12 to i32
%14 = call i32* @malloc(i32 %13)
store i32* %14, i32** %3
%15 = load i32, i32* %2
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.2, i64 0, i64 0), i32 %15)
store i32 0, i32* %4
br label %17
17: ; preds = %27, %0
%18 = load i32, i32* %4
%19 = load i32, i32* %2
%20 = icmp slt i32 %18, %19
br i1 %20, label %21, label %30
21: ; preds = %17
%22 = load i32*, i32** %3
%23 = load i32, i32* %4
%24 = sext i32 %23 to i64
%25 = getelementptr inbounds i32, i32* %22, i64 %24
%26 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %25)
br label %27
27: ; preds = %21
%28 = load i32, i32* %4
%29 = add nsw i32 %28, 1
store i32 %29, i32* %4
br label %17
30: ; preds = %17
%31 = load i32*, i32** %3
%32 = load i32, i32* %2
%33 = call i32 @quick(i32* %31, i32 %32)
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

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