#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 */
unsigned char *MD5(unsigned char const *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  const unsigned char to_hash[4] = {0x70, 0x70, 0x70, 0};
  printf("%x %x %x %x\n", to_hash[0], to_hash[1], to_hash[2], to_hash[3]);
  unsigned char *hash = MD5(to_hash, 4, NULL);
  printf("MD5 hash of the above:\n");
  for (int i = 0; i < 16; i++) {
    printf("%x ", hash[i]);
  }
  printf("\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xecb(%rip),%eax
mov    %eax,-0x8(%rbp)
movzbl -0x8(%rbp),%esi
movzbl -0x7(%rbp),%edx
movzbl -0x6(%rbp),%ecx
movzbl -0x5(%rbp),%r8d
lea    0xeb4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x8(%rbp),%rdi
mov    $0x4,%esi
xor    %eax,%eax
mov    %eax,%edx
call   1040 <MD5@plt>
mov    %rax,-0x10(%rbp)
lea    0xe9d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x14(%rbp)
cmpl   $0x10,-0x14(%rbp)
jge    11b4 <main+0x94>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
movzbl (%rax,%rcx,1),%esi
lea    0xe8a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1182 <main+0x62>
lea    0xe6c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
movl   $0x707070,0x4(%rsp)
lea    0xead(%rip),%rdi
mov    $0x70,%esi
mov    $0x70,%edx
mov    $0x70,%ecx
xor    %r8d,%r8d
xor    %eax,%eax
call   1050 <printf@plt>
lea    0x4(%rsp),%rdi
mov    $0x4,%esi
xor    %edx,%edx
call   1060 <MD5@plt>
mov    %rax,%rbx
lea    0xe8a(%rip),%rdi
call   1040 <puts@plt>
movzbl (%rbx),%esi
lea    0xe77(%rip),%r14
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x1(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x2(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x3(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x4(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x5(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x6(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x7(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x8(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0x9(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xa(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xb(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xc(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xd(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xe(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
movzbl 0xf(%rbx),%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@__const.main.to_hash = [4 x i8] c"ppp\00"
@.str = [13 x i8] c"%x %x %x %x\0A\00"
@.str.1 = [24 x i8] c"MD5 hash of the above:\0A\00"
@.str.2 = [4 x i8] c"%x \00"
@.str.3 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [4 x i8]
%3 = alloca i8*
%4 = alloca i32
store i32 0, i32* %1
%5 = bitcast [4 x i8]* %2 to i8*
%6 = getelementptr inbounds [4 x i8], [4 x i8]* %2, i64 0, i64 0
%7 = load i8, i8* %6
%8 = zext i8 %7 to i32
%9 = getelementptr inbounds [4 x i8], [4 x i8]* %2, i64 0, i64 1
%10 = load i8, i8* %9
%11 = zext i8 %10 to i32
%12 = getelementptr inbounds [4 x i8], [4 x i8]* %2, i64 0, i64 2
%13 = load i8, i8* %12
%14 = zext i8 %13 to i32
%15 = getelementptr inbounds [4 x i8], [4 x i8]* %2, i64 0, i64 3
%16 = load i8, i8* %15
%17 = zext i8 %16 to i32
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %8, i32 %11, i32 %14, i32 %17)
%19 = getelementptr inbounds [4 x i8], [4 x i8]* %2, i64 0, i64 0
%20 = call i8* @MD5(i8* %19, i32 4, i32* null)
store i8* %20, i8** %3
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %4
br label %22
22: ; preds = %33, %0
%23 = load i32, i32* %4
%24 = icmp slt i32 %23, 16
br i1 %24, label %25, label %36
25: ; preds = %22
%26 = load i8*, i8** %3
%27 = load i32, i32* %4
%28 = sext i32 %27 to i64
%29 = getelementptr inbounds i8, i8* %26, i64 %28
%30 = load i8, i8* %29
%31 = zext i8 %30 to i32
%32 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %31)
br label %33
33: ; preds = %25
%34 = load i32, i32* %4
%35 = add nsw i32 %34, 1
store i32 %35, i32* %4
br label %22
36: ; preds = %22
%37 = 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 = [13 x i8] c"%x %x %x %x\0A\00"
@.str.2 = [4 x i8] c"%x \00"
@str = [23 x i8] c"MD5 hash of the above:\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 7368816, i32* %1
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 112, i32 112, i32 112, i32 0)
%4 = call i8* @MD5(i8* %2, i32 4, i32* null)
%5 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str, i64 0, i64 0))
%6 = load i8, i8* %4
%7 = zext i8 %6 to i32
%8 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %7)
%9 = getelementptr inbounds i8, i8* %4, i64 1
%10 = load i8, i8* %9
%11 = zext i8 %10 to i32
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %11)
%13 = getelementptr inbounds i8, i8* %4, i64 2
%14 = load i8, i8* %13
%15 = zext i8 %14 to i32
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %15)
%17 = getelementptr inbounds i8, i8* %4, i64 3
%18 = load i8, i8* %17
%19 = zext i8 %18 to i32
%20 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %19)
%21 = getelementptr inbounds i8, i8* %4, i64 4
%22 = load i8, i8* %21
%23 = zext i8 %22 to i32
%24 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %23)
%25 = getelementptr inbounds i8, i8* %4, i64 5
%26 = load i8, i8* %25
%27 = zext i8 %26 to i32
%28 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %27)
%29 = getelementptr inbounds i8, i8* %4, i64 6
%30 = load i8, i8* %29
%31 = zext i8 %30 to i32
%32 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %31)
%33 = getelementptr inbounds i8, i8* %4, i64 7
%34 = load i8, i8* %33
%35 = zext i8 %34 to i32
%36 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %35)
%37 = getelementptr inbounds i8, i8* %4, i64 8
%38 = load i8, i8* %37
%39 = zext i8 %38 to i32
%40 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %39)
%41 = getelementptr inbounds i8, i8* %4, i64 9
%42 = load i8, i8* %41
%43 = zext i8 %42 to i32
%44 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %43)
%45 = getelementptr inbounds i8, i8* %4, i64 10
%46 = load i8, i8* %45
%47 = zext i8 %46 to i32
%48 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %47)
%49 = getelementptr inbounds i8, i8* %4, i64 11
%50 = load i8, i8* %49
%51 = zext i8 %50 to i32
%52 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %51)
%53 = getelementptr inbounds i8, i8* %4, i64 12
%54 = load i8, i8* %53
%55 = zext i8 %54 to i32
%56 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %55)
%57 = getelementptr inbounds i8, i8* %4, i64 13
%58 = load i8, i8* %57
%59 = zext i8 %58 to i32
%60 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %59)
%61 = getelementptr inbounds i8, i8* %4, i64 14
%62 = load i8, i8* %61
%63 = zext i8 %62 to i32
%64 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %63)
%65 = getelementptr inbounds i8, i8* %4, i64 15
%66 = load i8, i8* %65
%67 = zext i8 %66 to i32
%68 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %67)
%69 = call i32 @putchar(i32 10)
ret i32 0
}