#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*/ build_max_heap(int *, int);
int /*<<< orphan*/ max_heapify(int *, int, int);
void heap_sort(int *a, int size) {
  int temp;
  build_max_heap(a, size);
  while (size > 1) {
    temp = a[size];
    a[size] = a[1];
    a[1] = temp;
    size--;
    max_heapify(a, size, 1);
  }
}


x86 assembly (clang, -O0):
<heap_sort>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    -0x8(%rbp),%rdi
mov    -0xc(%rbp),%esi
call   1040 <build_max_heap@plt>
cmpl   $0x1,-0xc(%rbp)
jle    118e <heap_sort+0x6e>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
mov    (%rax,%rcx,4),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%rax
mov    0x4(%rax),%edx
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x10(%rbp),%ecx
mov    -0x8(%rbp),%rax
mov    %ecx,0x4(%rax)
mov    -0xc(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%rdi
mov    -0xc(%rbp),%esi
mov    $0x1,%edx
call   1030 <max_heapify@plt>
jmp    113b <heap_sort+0x1b>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<heap_sort>:
push   %rbp
push   %r14
push   %rbx
mov    %esi,%ebp
mov    %rdi,%rbx
call   1040 <build_max_heap@plt>
cmp    $0x2,%ebp
jl     1169 <heap_sort+0x49>
mov    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nop
mov    (%rbx,%rbp,4),%eax
mov    0x4(%rbx),%ecx
mov    %ecx,(%rbx,%rbp,4)
mov    %eax,0x4(%rbx)
lea    -0x1(%rbp),%r14
mov    %rbx,%rdi
mov    %r14d,%esi
mov    $0x1,%edx
call   1030 <max_heapify@plt>
cmp    $0x2,%rbp
mov    %r14,%rbp
ja     1140 <heap_sort+0x20>
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
define void @heap_sort(i32* %0, i32 %1) {
%3 = alloca i32*
%4 = alloca i32
%5 = alloca i32
store i32* %0, i32** %3
store i32 %1, i32* %4
%6 = load i32*, i32** %3
%7 = load i32, i32* %4
%8 = call i32 @build_max_heap(i32* %6, i32 %7)
br label %9
9: ; preds = %12, %2
%10 = load i32, i32* %4
%11 = icmp sgt i32 %10, 1
br i1 %11, label %12, label %33
12: ; preds = %9
%13 = load i32*, i32** %3
%14 = load i32, i32* %4
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i32, i32* %13, i64 %15
%17 = load i32, i32* %16
store i32 %17, i32* %5
%18 = load i32*, i32** %3
%19 = getelementptr inbounds i32, i32* %18, i64 1
%20 = load i32, i32* %19
%21 = load i32*, i32** %3
%22 = load i32, i32* %4
%23 = sext i32 %22 to i64
%24 = getelementptr inbounds i32, i32* %21, i64 %23
store i32 %20, i32* %24
%25 = load i32, i32* %5
%26 = load i32*, i32** %3
%27 = getelementptr inbounds i32, i32* %26, i64 1
store i32 %25, i32* %27
%28 = load i32, i32* %4
%29 = add nsw i32 %28, -1
store i32 %29, i32* %4
%30 = load i32*, i32** %3
%31 = load i32, i32* %4
%32 = call i32 @max_heapify(i32* %30, i32 %31, i32 1)
br label %9
33: ; preds = %9
ret void
}

LLVM IR (-O2):
define void @heap_sort(i32* %0, i32 %1) {
%3 = tail call i32 @build_max_heap(i32* %0, i32 %1)
%4 = icmp sgt i32 %1, 1
br i1 %4, label %5, label %17
5: ; preds = %2
%6 = getelementptr inbounds i32, i32* %0, i64 1
%7 = zext i32 %1 to i64
br label %8
8: ; preds = %5, %8
%9 = phi i64 [ %7, %5 ], [ %13, %8 ]
%10 = getelementptr inbounds i32, i32* %0, i64 %9
%11 = load i32, i32* %10
%12 = load i32, i32* %6
store i32 %12, i32* %10
store i32 %11, i32* %6
%13 = add nsw i64 %9, -1
%14 = trunc i64 %13 to i32
%15 = tail call i32 @max_heapify(i32* %0, i32 %14, i32 1)
%16 = icmp ugt i64 %9, 2
br i1 %16, label %8, label %17
17: ; preds = %8, %2
ret void
}