From 7ee5d1913c7cfd0261f86b0ff7be6968b8c07d84 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Fri, 28 Aug 2026 23:56:19 +0800
Subject: [Support] Use standard power-of-two checks

---
 backend/lib/MC/MCStreamer.cpp | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'backend/lib/MC/MCStreamer.cpp')

diff --git a/backend/lib/MC/MCStreamer.cpp b/backend/lib/MC/MCStreamer.cpp
index 56c3f96..709dccc 100644
--- a/backend/lib/MC/MCStreamer.cpp
+++ b/backend/lib/MC/MCStreamer.cpp
@@ -4,6 +4,7 @@
 
 #include <algorithm>
 #include <array>
+#include <bit>
 #include <cctype>
 #include <cstddef>
 #include <cstdint>
@@ -23,10 +24,6 @@ namespace {
          Text.find('\r') != std::string_view::npos;
 }
 
-[[nodiscard]] bool isPowerOfTwo(std::uint64_t Value) noexcept {
-  return Value != 0 && (Value & (Value - 1U)) == 0;
-}
-
 [[nodiscard]] unsigned log2Exact(std::uint64_t Value) noexcept {
   unsigned Result = 0;
   while (Value > 1) {
@@ -282,7 +279,7 @@ Expected<void> AsmTextStreamer::emitAlignment(std::uint64_t Alignment, std::uint
   auto Active = requireActiveSection();
   if (!Active)
     return std::unexpected(Active.error());
-  if (!isPowerOfTwo(Alignment)) {
+  if (!std::has_single_bit(Alignment)) {
     return makeUnexpected(ErrorCode::InvalidArgument,
                           "assembly alignment must be a nonzero power of two");
   }
-- 
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