From 8d20a526e57d9551acfded39b34761bdea7eca0f Mon Sep 17 00:00:00 2001
From: AnotherTest <ali.mpfard@gmail.com>
Date: Mon, 20 Apr 2020 21:01:01 +0430
Subject: [PATCH] LibCrypto: Preallocate 128 words of space for
 UnsignedBigInteger

This shaves off 1 second of runtime
---
 Libraries/LibCrypto/BigInt/UnsignedBigInteger.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h b/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
index dbecbf0735..6238ccef6a 100644
--- a/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
+++ b/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
@@ -34,13 +34,14 @@
 namespace Crypto {
 
 struct UnsignedDivisionResult;
+constexpr size_t STARTING_WORD_SIZE = 128;
 
 class UnsignedBigInteger {
 public:
     UnsignedBigInteger(u32 x) { m_words.append(x); }
 
     explicit UnsignedBigInteger(AK::Vector<u32, STARTING_WORD_SIZE>&& words)
-        : m_words(move(words))
+        : m_words(words)
     {
     }
 
@@ -59,7 +60,7 @@ public:
         return export_data(buffer);
     }
 
-    const AK::Vector<u32>& words() const { return m_words; }
+    const AK::Vector<u32, STARTING_WORD_SIZE>& words() const { return m_words; }
 
     UnsignedBigInteger add(const UnsignedBigInteger& other) const;
     UnsignedBigInteger sub(const UnsignedBigInteger& other) const;
@@ -89,7 +90,7 @@ private:
     u32 shift_left_get_one_word(const size_t num_bits, const size_t result_word_index) const;
 
     static constexpr size_t BITS_IN_WORD = 32;
-    AK::Vector<u32> m_words;
+    AK::Vector<u32, STARTING_WORD_SIZE> m_words;
 
     // Used to indicate a negative result, or a result of an invalid operation
     bool m_is_invalid { false };