#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 partition(void **, int (*)(void const *, void const *), int, int);
void do_qsort(void **ar, int (*cmp)(const void *, const void *), int left,
              int right) {
  int pivotIndex;
  if (right <= left) {
    return;
  }
  pivotIndex = partition(ar, cmp, left, right);
  do_qsort(ar, cmp, left, pivotIndex);
  do_qsort(ar, cmp, pivotIndex + 1, right);
}


x86 assembly (clang, -O0):
<do_qsort>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %edx,-0x14(%rbp)
mov    %ecx,-0x18(%rbp)
mov    -0x18(%rbp),%eax
cmp    -0x14(%rbp),%eax
jg     1147 <do_qsort+0x27>
jmp    1186 <do_qsort+0x66>
mov    -0x8(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    -0x14(%rbp),%edx
mov    -0x18(%rbp),%ecx
call   1030 <partition@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x8(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    -0x14(%rbp),%edx
mov    -0x1c(%rbp),%ecx
call   1040 <do_qsort@plt>
mov    -0x8(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    -0x1c(%rbp),%edx
add    $0x1,%edx
mov    -0x18(%rbp),%ecx
call   1040 <do_qsort@plt>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<do_qsort>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
cmp    %edx,%ecx
jle    116b <do_qsort+0x4b>
mov    %ecx,%r14d
mov    %edx,%ebp
mov    %rsi,%r15
mov    %rdi,%r12
nopw   0x0(%rax,%rax,1)
mov    %r12,%rdi
mov    %r15,%rsi
mov    %ebp,%edx
mov    %r14d,%ecx
call   1030 <partition@plt>
mov    %eax,%ebx
mov    %r12,%rdi
mov    %r15,%rsi
mov    %ebp,%edx
mov    %eax,%ecx
call   1040 <do_qsort@plt>
add    $0x1,%ebx
mov    %ebx,%ebp
cmp    %r14d,%ebx
jl     1140 <do_qsort+0x20>
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define void @do_qsort(i8** %0, i32 (i8*, i8*)* %1, i32 %2, i32 %3) {
%5 = alloca i8**
%6 = alloca i32 (i8*, i8*)*
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32
store i8** %0, i8*** %5
store i32 (i8*, i8*)* %1, i32 (i8*, i8*)** %6
store i32 %2, i32* %7
store i32 %3, i32* %8
%10 = load i32, i32* %8
%11 = load i32, i32* %7
%12 = icmp sle i32 %10, %11
br i1 %12, label %13, label %14
13: ; preds = %4
br label %29
14: ; preds = %4
%15 = load i8**, i8*** %5
%16 = load i32 (i8*, i8*)*, i32 (i8*, i8*)** %6
%17 = load i32, i32* %7
%18 = load i32, i32* %8
%19 = call i32 @partition(i8** %15, i32 (i8*, i8*)* %16, i32 %17, i32 %18)
store i32 %19, i32* %9
%20 = load i8**, i8*** %5
%21 = load i32 (i8*, i8*)*, i32 (i8*, i8*)** %6
%22 = load i32, i32* %7
%23 = load i32, i32* %9
%24 = load i8**, i8*** %5
%25 = load i32 (i8*, i8*)*, i32 (i8*, i8*)** %6
%26 = load i32, i32* %9
%27 = add nsw i32 %26, 1
%28 = load i32, i32* %8
br label %29
29: ; preds = %14, %13
ret void
}

LLVM IR (-O2):
define void @do_qsort(i8** %0, i32 (i8*, i8*)* %1, i32 %2, i32 %3) {
%5 = icmp sgt i32 %3, %2
br i1 %5, label %6, label %11
6: ; preds = %4, %6
%7 = phi i32 [ %9, %6 ], [ %2, %4 ]
%8 = tail call i32 @partition(i8** %0, i32 (i8*, i8*)* %1, i32 %7, i32 %3)
tail call void @do_qsort(i8** %0, i32 (i8*, i8*)* %1, i32 %7, i32 %8)
%9 = add nsw i32 %8, 1
%10 = icmp slt i32 %9, %3
br i1 %10, label %6, label %11
11: ; preds = %6, %4
ret void
}