Enable fast floating point model and fast debug linking

src/buffer/out/TextColor.cpp

@@ -4,6 +4,8 @@
 #include "precomp.h"
 #include "TextColor.h"
 
+#include <til/bit.h>
+
 // clang-format off
 
 // A table mapping 8-bit RGB colors, in the form RRRGGGBB,
@@ -186,7 +188,7 @@ COLORREF TextColor::GetColor(const std::array<COLORREF, 256>& colorTable, const
             //    the result will be something like 0b00100000.
             // 5. Use BitScanForward (bsf) to find the index of the most significant 1 bit.
             const auto haystack = _mm256_loadu_si256(reinterpret_cast<const __m256i*>(colorTable.data())); // 1.
-            const auto needle = _mm256_set1_epi32(__builtin_bit_cast(int, defaultColor)); // 2.
+            const auto needle = _mm256_set1_epi32(til::bit_cast<int>(defaultColor)); // 2.
             const auto result = _mm256_cmpeq_epi32(haystack, needle); // 3.
             const auto mask = _mm256_movemask_ps(_mm256_castsi256_ps(result)); // 4.
             unsigned long index;
@@ -203,7 +205,7 @@ COLORREF TextColor::GetColor(const std::array<COLORREF, 256>& colorTable, const
             //   --> the index returned by _BitScanForward must be divided by 2.
             const auto haystack1 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(colorTable.data() + 0));
             const auto haystack2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(colorTable.data() + 4));
-            const auto needle = _mm_set1_epi32(__builtin_bit_cast(int, defaultColor));
+            const auto needle = _mm_set1_epi32(til::bit_cast<int>(defaultColor));
             const auto result1 = _mm_cmpeq_epi32(haystack1, needle);
             const auto result2 = _mm_cmpeq_epi32(haystack2, needle);
             const auto result = _mm_packs_epi32(result1, result2); // 3.5

src/inc/consoletaeftemplates.hpp

@@ -17,6 +17,8 @@ Revision History:
 
 #pragma once
 
+#include <til/bit.h>
+
 // Helper for declaring a variable to store a TEST_METHOD_PROPERTY and get it's value from the test metadata
 #define INIT_TEST_PROPERTY(type, identifer, description) \
     type identifer;                                      \
@@ -59,7 +61,7 @@ namespace WEX::TestExecution
             return true;
         }
 
-        const auto nDiff = static_cast<std::make_signed_t<U>>(*reinterpret_cast<U*>(&a) - *reinterpret_cast<U*>(&b));
+        const auto nDiff = static_cast<std::make_signed_t<U>>(til::bit_cast<U>(&a) - til::bit_cast<U>(&b));
         const auto uDiff = static_cast<U>(nDiff < 0 ? -nDiff : nDiff);
         return uDiff <= 4;
     }

src/inc/til/bit.h

@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#pragma once
+
+namespace til
+{
+    template<class To, class From, std::enable_if_t<std::conjunction_v<std::bool_constant<sizeof(To) == sizeof(From)>, std::is_trivially_copyable<To>, std::is_trivially_copyable<From>>, int> = 0>
+    [[nodiscard]] constexpr To bit_cast(const From& _Val) noexcept
+    {
+#ifdef __cpp_lib_bit_cast
+#warning "Replace til::bit_cast and __builtin_bit_cast with std::bit_cast"
+#endif
+        return __builtin_bit_cast(To, _Val);
+    }
+}