#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*/ display(int *, int);
int /*<<< orphan*/ mergeSort(int *, int /*<<< orphan*/, int, int);
int /*<<< orphan*/ printf(char *);
int main() {
  int a[10] = {5, 7, 3, 4, 10, 9, 6, 8, 1, 2};
  printf("input: ");
  display(a, 10);
  mergeSort(a, 0, 10 - 1, 1);
  printf("non-descending: ");
  display(a, 10);
  mergeSort(a, 0, 10 - 1, 2);
  printf("non-ascending: ");
  display(a, 10);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x30(%rbp),%rdi
lea    0xea6(%rip),%rsi
mov    $0x28,%edx
call   1050 <memcpy@plt>
lea    0xebd(%rip),%rdi
call   1040 <printf@plt>
lea    -0x30(%rbp),%rdi
mov    $0xa,%esi
call   1030 <display@plt>
lea    -0x30(%rbp),%rdi
xor    %esi,%esi
mov    $0x9,%edx
mov    $0x1,%ecx
call   1060 <mergeSort@plt>
lea    0xe96(%rip),%rdi
call   1040 <printf@plt>
lea    -0x30(%rbp),%rdi
mov    $0xa,%esi
call   1030 <display@plt>
lea    -0x30(%rbp),%rdi
xor    %esi,%esi
mov    $0x9,%edx
mov    $0x2,%ecx
call   1060 <mergeSort@plt>
lea    0xe78(%rip),%rdi
call   1040 <printf@plt>
lea    -0x30(%rbp),%rdi
mov    $0xa,%esi
call   1030 <display@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x30,%rsp
mov    0xee4(%rip),%rax
mov    %rax,0x20(%rsp)
movaps 0xec8(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movaps 0xeac(%rip),%xmm0
movaps %xmm0,(%rsp)
lea    0xec9(%rip),%rdi
call   1040 <printf@plt>
mov    %rsp,%rbx
mov    %rbx,%rdi
mov    $0xa,%esi
call   1030 <display@plt>
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x9,%edx
mov    $0x1,%ecx
call   1050 <mergeSort@plt>
lea    0xea1(%rip),%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
call   1030 <display@plt>
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x9,%edx
mov    $0x2,%ecx
call   1050 <mergeSort@plt>
lea    0xe85(%rip),%rdi
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
call   1030 <display@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.a = [10 x i32] [i32 5, i32 7, i32 3, i32 4, i32 10, i32 9, i32 6, i32 8, i32 1, i32 2]
@.str = [8 x i8] c"input: \00"
@.str.1 = [17 x i8] c"non-descending: \00"
@.str.2 = [16 x i8] c"non-ascending: \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [10 x i32]
store i32 0, i32* %1
%3 = bitcast [10 x i32]* %2 to i8*
%4 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
%5 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%6 = call i32 @display(i32* %5, i32 10)
%7 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%8 = call i32 @mergeSort(i32* %7, i32 0, i32 9, i32 1)
%9 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0))
%10 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%11 = call i32 @display(i32* %10, i32 10)
%12 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%13 = call i32 @mergeSort(i32* %12, i32 0, i32 9, i32 2)
%14 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
%15 = getelementptr inbounds [10 x i32], [10 x i32]* %2, i64 0, i64 0
%16 = call i32 @display(i32* %15, i32 10)
ret i32 0
}

LLVM IR (-O2):
@__const.main.a = [10 x i32] [i32 5, i32 7, i32 3, i32 4, i32 10, i32 9, i32 6, i32 8, i32 1, i32 2]
@.str = [8 x i8] c"input: \00"
@.str.1 = [17 x i8] c"non-descending: \00"
@.str.2 = [16 x i8] c"non-ascending: \00"
define i32 @main() {
%1 = alloca [10 x i32]
%2 = bitcast [10 x i32]* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [10 x i32], [10 x i32]* %1, i64 0, i64 0
%5 = call i32 @display(i32* %4, i32 10)
%6 = call i32 @mergeSort(i32* %4, i32 0, i32 9, i32 1)
%7 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0))
%8 = call i32 @display(i32* %4, i32 10)
%9 = call i32 @mergeSort(i32* %4, i32 0, i32 9, i32 2)
%10 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.2, i64 0, i64 0))
%11 = call i32 @display(i32* %4, i32 10)
ret i32 0
}