#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 *mergesort(int *, int);
int /*<<< orphan*/ printf(char *, int);
int /*<<< orphan*/ puts(char *);
int main(void) {
  int i;
  int lst[] = {3, 5, 1, 4, 2};
  int *r = mergesort(lst, 5);
  for (i = 0; i < 5; i++)
    printf("%d\t", r[i]);
  puts("");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeba(%rip),%rax
mov    %rax,-0x20(%rbp)
mov    0xeb7(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    0xeb5(%rip),%eax
mov    %eax,-0x10(%rbp)
lea    -0x20(%rbp),%rdi
mov    $0x5,%esi
call   1050 <mergesort@plt>
mov    %rax,-0x28(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0x5,-0x8(%rbp)
jge    11a6 <main+0x76>
mov    -0x28(%rbp),%rax
movslq -0x8(%rbp),%rcx
mov    (%rax,%rcx,4),%esi
lea    0xe81(%rip),%rdi
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1177 <main+0x47>
lea    0xe6a(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x18,%rsp
mov    0xed3(%rip),%eax
mov    %eax,0x10(%rsp)
movaps 0xeb8(%rip),%xmm0
movaps %xmm0,(%rsp)
mov    %rsp,%rdi
mov    $0x5,%esi
call   1050 <mergesort@plt>
mov    %rax,%rbx
mov    (%rax),%esi
lea    0xeaf(%rip),%r14
mov    %r14,%rdi
call   1040 <printf@plt>
mov    0x4(%rbx),%esi
mov    %r14,%rdi
call   1040 <printf@plt>
mov    0x8(%rbx),%esi
mov    %r14,%rdi
call   1040 <printf@plt>
mov    0xc(%rbx),%esi
mov    %r14,%rdi
call   1040 <printf@plt>
mov    0x10(%rbx),%esi
mov    %r14,%rdi
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x18,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@__const.main.lst = [5 x i32] [i32 3, i32 5, i32 1, i32 4, i32 2]
@.str = [4 x i8] c"%d\09\00"
@.str.1 = [1 x i8] zeroinitializer
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca [5 x i32]
%4 = alloca i32*
store i32 0, i32* %1
%5 = bitcast [5 x i32]* %3 to i8*
%6 = getelementptr inbounds [5 x i32], [5 x i32]* %3, i64 0, i64 0
%7 = call i32* @mergesort(i32* %6, i32 5)
store i32* %7, i32** %4
store i32 0, i32* %2
br label %8
8: ; preds = %18, %0
%9 = load i32, i32* %2
%10 = icmp slt i32 %9, 5
br i1 %10, label %11, label %21
11: ; preds = %8
%12 = load i32*, i32** %4
%13 = load i32, i32* %2
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds i32, i32* %12, i64 %14
%16 = load i32, i32* %15
%17 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %16)
br label %18
18: ; preds = %11
%19 = load i32, i32* %2
%20 = add nsw i32 %19, 1
store i32 %20, i32* %2
br label %8
21: ; preds = %8
%22 = call i32 @puts(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.1, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@__const.main.lst = [5 x i32] [i32 3, i32 5, i32 1, i32 4, i32 2]
@.str = [4 x i8] c"%d\09\00"
define i32 @main() {
%1 = alloca [5 x i32]
%2 = bitcast [5 x i32]* %1 to i8*
%3 = getelementptr inbounds [5 x i32], [5 x i32]* %1, i64 0, i64 0
%4 = call i32* @mergesort(i32* %3, i32 5)
%5 = load i32, i32* %4
%6 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = getelementptr inbounds i32, i32* %4, i64 1
%8 = load i32, i32* %7
%9 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %8)
%10 = getelementptr inbounds i32, i32* %4, i64 2
%11 = load i32, i32* %10
%12 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %11)
%13 = getelementptr inbounds i32, i32* %4, i64 3
%14 = load i32, i32* %13
%15 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %14)
%16 = getelementptr inbounds i32, i32* %4, i64 4
%17 = load i32, i32* %16
%18 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %17)
%19 = call i32 @putchar(i32 10)
ret i32 0
}