#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 */
typedef struct TYPE_3__ TYPE_1__;

/* Type definitions */
typedef int /*<<< orphan*/ uint8_t;
struct TYPE_3__ {
  int length;
  int /*<<< orphan*/ data;
};
typedef TYPE_1__ BUF_MEM;
typedef int /*<<< orphan*/ BIO;

/* Variables and functions */
int /*<<< orphan*/ BIO_FLAGS_BASE64_NO_NL;
int /*<<< orphan*/ BIO_f_base64();
int /*<<< orphan*/ BIO_flush(int /*<<< orphan*/ *);
int /*<<< orphan*/ BIO_free_all(int /*<<< orphan*/ *);
int /*<<< orphan*/ BIO_get_mem_ptr(int /*<<< orphan*/ *, TYPE_1__ **);
int /*<<< orphan*/ *BIO_new(int /*<<< orphan*/);
int /*<<< orphan*/ *BIO_push(int /*<<< orphan*/ *, int /*<<< orphan*/ *);
int /*<<< orphan*/ BIO_s_mem();
int /*<<< orphan*/ BIO_set_flags(int /*<<< orphan*/ *, int /*<<< orphan*/);
int /*<<< orphan*/ BIO_write(int /*<<< orphan*/ *, int /*<<< orphan*/ *,
                             size_t);
int /*<<< orphan*/ bcopy(int /*<<< orphan*/, char *, int);
char *malloc(int);
char *base64encode(uint8_t *data, size_t datalen) {
  BIO *b64, *bio;
  BUF_MEM *bptr;
  char *out;
  b64 = BIO_new(BIO_f_base64());
  BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
  bio = BIO_new(BIO_s_mem());
  bio = BIO_push(b64, bio);
  BIO_write(bio, data, datalen);
  BIO_flush(bio);
  BIO_get_mem_ptr(bio, &bptr);
  out = malloc(bptr->length + 1);
  bcopy(bptr->data, out, bptr->length);
  out[bptr->length] = '\0';
  BIO_free_all(bio);
  return (out);
}


x86 assembly (clang, -O0):
<base64encode>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    $0x0,%al
call   1040 <BIO_f_base64@plt>
mov    %eax,%edi
call   1070 <BIO_new@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
mov    0x2e03(%rip),%rax
mov    (%rax),%esi
call   1050 <BIO_set_flags@plt>
mov    $0x0,%al
call   10c0 <BIO_s_mem@plt>
mov    %eax,%edi
call   1070 <BIO_new@plt>
mov    %rax,-0x20(%rbp)
mov    -0x18(%rbp),%rdi
mov    -0x20(%rbp),%rsi
call   1030 <BIO_push@plt>
mov    %rax,-0x20(%rbp)
mov    -0x20(%rbp),%rdi
mov    -0x8(%rbp),%rsi
mov    -0x10(%rbp),%rdx
call   10b0 <BIO_write@plt>
mov    -0x20(%rbp),%rdi
call   10d0 <BIO_flush@plt>
mov    -0x20(%rbp),%rdi
lea    -0x28(%rbp),%rsi
call   10a0 <BIO_get_mem_ptr@plt>
mov    -0x28(%rbp),%rax
mov    (%rax),%edi
add    $0x1,%edi
call   1060 <malloc@plt>
mov    %rax,-0x30(%rbp)
mov    -0x28(%rbp),%rax
mov    0x4(%rax),%edi
mov    -0x30(%rbp),%rsi
mov    -0x28(%rbp),%rax
mov    (%rax),%edx
call   1080 <bcopy@plt>
mov    -0x30(%rbp),%rax
mov    -0x28(%rbp),%rcx
movslq (%rcx),%rcx
movb   $0x0,(%rax,%rcx,1)
mov    -0x20(%rbp),%rdi
call   1090 <BIO_free_all@plt>
mov    -0x30(%rbp),%rax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<base64encode>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r14
mov    %rdi,%r15
xor    %eax,%eax
call   1040 <BIO_f_base64@plt>
mov    %eax,%edi
call   1070 <BIO_new@plt>
mov    %rax,%rbx
mov    0x2e0a(%rip),%rax
mov    (%rax),%esi
mov    %rbx,%rdi
call   1050 <BIO_set_flags@plt>
xor    %eax,%eax
call   10c0 <BIO_s_mem@plt>
mov    %eax,%edi
call   1070 <BIO_new@plt>
mov    %rbx,%rdi
mov    %rax,%rsi
call   1030 <BIO_push@plt>
mov    %rax,%r12
mov    %rax,%rdi
mov    %r15,%rsi
mov    %r14,%rdx
call   10b0 <BIO_write@plt>
mov    %r12,%rdi
call   10d0 <BIO_flush@plt>
mov    %rsp,%rsi
mov    %r12,%rdi
call   10a0 <BIO_get_mem_ptr@plt>
mov    (%rsp),%r15
mov    (%r15),%r14d
lea    0x1(%r14),%edi
call   1060 <malloc@plt>
mov    %rax,%rbx
mov    0x4(%r15),%edi
mov    %rax,%rsi
mov    %r14d,%edx
call   1080 <bcopy@plt>
mov    (%rsp),%rax
movslq (%rax),%rax
movb   $0x0,(%rbx,%rax,1)
mov    %r12,%rdi
call   1090 <BIO_free_all@plt>
mov    %rbx,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
%struct.TYPE_3__ = type { i32, i32 }
@BIO_FLAGS_BASE64_NO_NL = global i32 0
define i8* @base64encode(i32* %0, i64 %1) {
%3 = alloca i32*
%4 = alloca i64
%5 = alloca i32*
%6 = alloca i32*
%7 = alloca %struct.TYPE_3__*
%8 = alloca i8*
store i32* %0, i32** %3
store i64 %1, i64* %4
%9 = call i32 (...) @BIO_f_base64()
%10 = call i32* @BIO_new(i32 %9)
store i32* %10, i32** %5
%11 = load i32*, i32** %5
%12 = load i32, i32* @BIO_FLAGS_BASE64_NO_NL
%13 = call i32 @BIO_set_flags(i32* %11, i32 %12)
%14 = call i32 (...) @BIO_s_mem()
%15 = call i32* @BIO_new(i32 %14)
store i32* %15, i32** %6
%16 = load i32*, i32** %5
%17 = load i32*, i32** %6
%18 = call i32* @BIO_push(i32* %16, i32* %17)
store i32* %18, i32** %6
%19 = load i32*, i32** %6
%20 = load i32*, i32** %3
%21 = load i64, i64* %4
%22 = call i32 @BIO_write(i32* %19, i32* %20, i64 %21)
%23 = load i32*, i32** %6
%24 = call i32 @BIO_flush(i32* %23)
%25 = load i32*, i32** %6
%26 = call i32 @BIO_get_mem_ptr(i32* %25, %struct.TYPE_3__** %7)
%27 = load %struct.TYPE_3__*, %struct.TYPE_3__** %7
%28 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %27, i32 0, i32 0
%29 = load i32, i32* %28
%30 = add nsw i32 %29, 1
%31 = call i8* @malloc(i32 %30)
store i8* %31, i8** %8
%32 = load %struct.TYPE_3__*, %struct.TYPE_3__** %7
%33 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %32, i32 0, i32 1
%34 = load i32, i32* %33
%35 = load i8*, i8** %8
%36 = load %struct.TYPE_3__*, %struct.TYPE_3__** %7
%37 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %36, i32 0, i32 0
%38 = load i32, i32* %37
%39 = call i32 @bcopy(i32 %34, i8* %35, i32 %38)
%40 = load i8*, i8** %8
%41 = load %struct.TYPE_3__*, %struct.TYPE_3__** %7
%42 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %41, i32 0, i32 0
%43 = load i32, i32* %42
%44 = sext i32 %43 to i64
%45 = getelementptr inbounds i8, i8* %40, i64 %44
store i8 0, i8* %45
%46 = load i32*, i32** %6
%47 = call i32 @BIO_free_all(i32* %46)
%48 = load i8*, i8** %8
ret i8* %48
}

LLVM IR (-O2):
%struct.TYPE_3__ = type { i32, i32 }
@BIO_FLAGS_BASE64_NO_NL = global i32 0
define i8* @base64encode(i32* %0, i64 %1) {
%3 = alloca %struct.TYPE_3__*
%4 = bitcast %struct.TYPE_3__** %3 to i8*
%5 = tail call i32 (...) @BIO_f_base64()
%6 = tail call i32* @BIO_new(i32 %5)
%7 = load i32, i32* @BIO_FLAGS_BASE64_NO_NL
%8 = tail call i32 @BIO_set_flags(i32* %6, i32 %7)
%9 = tail call i32 (...) @BIO_s_mem()
%10 = tail call i32* @BIO_new(i32 %9)
%11 = tail call i32* @BIO_push(i32* %6, i32* %10)
%12 = tail call i32 @BIO_write(i32* %11, i32* %0, i64 %1)
%13 = tail call i32 @BIO_flush(i32* %11)
%14 = call i32 @BIO_get_mem_ptr(i32* %11, %struct.TYPE_3__** %3)
%15 = load %struct.TYPE_3__*, %struct.TYPE_3__** %3
%16 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %15, i64 0, i32 0
%17 = load i32, i32* %16
%18 = add nsw i32 %17, 1
%19 = call i8* @malloc(i32 %18)
%20 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %15, i64 0, i32 1
%21 = load i32, i32* %20
%22 = call i32 @bcopy(i32 %21, i8* %19, i32 %17)
%23 = load %struct.TYPE_3__*, %struct.TYPE_3__** %3
%24 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %23, i64 0, i32 0
%25 = load i32, i32* %24
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds i8, i8* %19, i64 %26
store i8 0, i8* %27
%28 = call i32 @BIO_free_all(i32* %11)
ret i8* %19
}