From: Mikhail R. Gadelha <mikhail@igalia.com>
Date: Thu, 20 Apr 2023 16:00:04 +0000 (-0300)
Subject: [libc] Make UInt<T> trivially copyable
X-Git-Tag: upstream/17.0.6~10924
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5db12eca1f70bb9c2dab33ff88dcccdfba75af6e;p=platform%2Fupstream%2Fllvm.git

[libc] Make UInt<T> trivially copyable

This patch defaults the copy constructor and copy operator so it can be
used with __builtin_bit_cast

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D148794
---

diff --git a/libc/src/__support/UInt.h b/libc/src/__support/UInt.h
index 2cbd3dfea6fb..c151689c3bbb 100644
--- a/libc/src/__support/UInt.h
+++ b/libc/src/__support/UInt.h
@@ -35,12 +35,9 @@ template <size_t Bits> struct UInt {
   static constexpr uint64_t low(uint64_t v) { return v & MASK32; }
   static constexpr uint64_t high(uint64_t v) { return (v >> 32) & MASK32; }
 
-  constexpr UInt() {}
+  constexpr UInt() = default;
 
-  constexpr UInt(const UInt<Bits> &other) {
-    for (size_t i = 0; i < WORDCOUNT; ++i)
-      val[i] = other.val[i];
-  }
+  constexpr UInt(const UInt<Bits> &other) = default;
 
   template <size_t OtherBits> constexpr UInt(const UInt<OtherBits> &other) {
     if (OtherBits >= Bits) {
@@ -90,11 +87,7 @@ template <size_t Bits> struct UInt {
     return uint8_t(uint64_t(*this));
   }
 
-  UInt<Bits> &operator=(const UInt<Bits> &other) {
-    for (size_t i = 0; i < WORDCOUNT; ++i)
-      val[i] = other.val[i];
-    return *this;
-  }
+  UInt<Bits> &operator=(const UInt<Bits> &other) = default;
 
   constexpr bool is_zero() const {
     for (size_t i = 0; i < WORDCOUNT; ++i) {