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45 lines
1.6 KiB
Diff
45 lines
1.6 KiB
Diff
From c4ce8509d015a0b75cfa9d36609b8409821a9c86 Mon Sep 17 00:00:00 2001
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From: Matt Borland <matt@mattborland.com>
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Date: Fri, 11 Aug 2023 09:20:47 -0400
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Subject: [PATCH 1/2] Fix use of intrinsics on windows ARM platforms
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---
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.../json/detail/charconv/detail/emulated128.hpp | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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diff --git a/include/boost/json/detail/charconv/detail/emulated128.hpp b/include/boost/json/detail/charconv/detail/emulated128.hpp
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index 3a1a392..6eadbc7 100644
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--- a/include/boost/json/detail/charconv/detail/emulated128.hpp
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+++ b/include/boost/json/detail/charconv/detail/emulated128.hpp
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@@ -58,11 +58,15 @@ struct uint128
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static inline std::uint64_t umul64(std::uint32_t x, std::uint32_t y) noexcept
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{
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-#if defined(BOOST_JSON_HAS_MSVC_32BIT_INTRINSICS)
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+ #if defined(BOOST_JSON_HAS_MSVC_32BIT_INTRINSICS) && !defined(_M_ARM64)
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+
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return __emulu(x, y);
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-#else
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+
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+ #else
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+
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return x * static_cast<std::uint64_t>(y);
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-#endif
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+
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+ #endif
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}
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// Get 128-bit result of multiplication of two 64-bit unsigned integers.
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@@ -73,7 +77,7 @@ BOOST_JSON_SAFEBUFFERS inline uint128 umul128(std::uint64_t x, std::uint64_t y)
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auto result = static_cast<boost::uint128_type>(x) * static_cast<boost::uint128_type>(y);
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return {static_cast<std::uint64_t>(result >> 64), static_cast<std::uint64_t>(result)};
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- #elif defined(BOOST_JSON_HAS_MSVC_64BIT_INTRINSICS)
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+ #elif defined(BOOST_JSON_HAS_MSVC_64BIT_INTRINSICS) && !defined(_M_ARM64)
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std::uint64_t high;
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std::uint64_t low = _umul128(x, y, &high);
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--
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2.38.1.windows.1
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