Make usage of SSE extension optional

Signed-off-by: Christian Parpart <[email protected]>
Co-authored-by: Yaraslau Tamashevich <[email protected]>

CMakeLists.txt

@@ -43,6 +43,7 @@ option(LIBUNICODE_EXAMPLES "libunicode: Enables building of example programs. [d
 option(LIBUNICODE_TESTING "libunicode: Enables building of unittests for libunicode [default: ${MASTER_PROJECT}" ${MASTER_PROJECT})
 option(LIBUNICODE_TOOLS "libunicode: Builds CLI tools [default: ${MASTER_PROJECT}]" ${MASTER_PROJECT})
 option(LIBUNICODE_BUILD_STATIC "libunicode: provide static library instead of dynamic [default: ${LIBUNICODE_BUILD_STATIC_DEFAULT}]" ${LIBUNICODE_BUILD_STATIC_DEFAULT})
+option(LIBUNICODE_USE_INTRINSICS "libunicode: Use SIMD extenstion during text read [default: ON]" ON)
 
 include(ThirdParties)
 

scripts/install-deps.sh

@@ -235,7 +235,7 @@ main()
         Darwin)
             install_deps_darwin
             ;;
-        freebsd)
+        FreeBSD)
             install_deps_FreeBSD
             ;;
         *)

src/libunicode/CMakeLists.txt

@@ -110,6 +110,10 @@ add_library(unicode ${LIBUNICODE_LIB_MODE}
     codepoint_properties_names.cpp
 )
 
+if(LIBUNICODE_USE_INTRINSICS)
+    target_compile_definitions(unicode PRIVATE USE_INTRINSICS)
+endif()
+
 set(public_headers
     capi.h
     codepoint_properties.h

src/libunicode/scan.cpp

@@ -81,6 +81,7 @@ size_t detail::scan_for_text_ascii(string_view text, size_t maxColumnCount) noex
     auto input = text.data();
     auto const end = text.data() + min(text.size(), maxColumnCount);
 
+#if defined(USE_INTRINSICS)
     intrinsics::m128i const ControlCodeMax = intrinsics::set1_epi8(0x20); // 0..0x1F
     intrinsics::m128i const Complex = intrinsics::set1_epi8(-128);        // equals to 0x80 (0b1000'0000)
 
@@ -99,6 +100,7 @@ size_t detail::scan_for_text_ascii(string_view text, size_t maxColumnCount) noex
         }
         input += sizeof(intrinsics::m128i);
     }
+#endif
 
     while (input != end && is_ascii(*input))
         ++input;