diff --git a/uppsrc/Core/Defs.h b/uppsrc/Core/Defs.h
index e3ca56bb9..13f31cda4 100644
--- a/uppsrc/Core/Defs.h
+++ b/uppsrc/Core/Defs.h
@@ -404,6 +404,12 @@ typedef long long unsigned uint64;
 
 typedef uint64             qword;
 
+struct m128 {
+	int64 i64[2];
+	
+	static m128 Zero()             { m128 a; a.i64[0] = a.i64[1] = 0; return a; }
+};
+
 inline bool IsNaN(double d)        { return std::isnan(d); }
 inline bool IsInf(double d)        { return std::isinf(d); }
 inline bool IsFin(double d)        { return !IsNaN(d) && !IsInf(d); }
diff --git a/uppsrc/Core/Mem.cpp b/uppsrc/Core/Mem.cpp
index 1247e7ea8..10afa1512 100644
--- a/uppsrc/Core/Mem.cpp
+++ b/uppsrc/Core/Mem.cpp
@@ -86,6 +86,7 @@ bool memeq8(const void *p, const void *q, size_t len) { return inline_memeq8_ali
 bool memeq16(const void *p, const void *q, size_t len) { return inline_memeq16_aligned(p, q, len); }
 bool memeq32(const void *p, const void *q, size_t len) { return inline_memeq32_aligned(p, q, len); }
 bool memeq64(const void *p, const void *q, size_t len) { return inline_memeq64_aligned(p, q, len); }
+bool memeq128(const void *p, const void *q, size_t len) { return inline_memeq128_aligned(p, q, len); }
 
 #endif
 
diff --git a/uppsrc/Core/Mem.h b/uppsrc/Core/Mem.h
index 0c39ab19c..c06353198 100644
--- a/uppsrc/Core/Mem.h
+++ b/uppsrc/Core/Mem.h
@@ -105,6 +105,13 @@ void memset64(void *p, qword data, size_t len)
 		Set128(0);
 }
 
+inline
+void memset128(void *t, m128 data, size_t len)
+{
+	if(len)
+		memset8__(t, *(__m128i *)&data, 16 * len);
+}
+
 void memcpy8__(void *p, const void *q, size_t len);
 
 inline
@@ -390,10 +397,17 @@ bool inline_memeq64_aligned(const void *p, const void *q, size_t len)
 	return memeq8__(t, s, 8 * len);
 }
 
+force_inline
+bool inline_memeq128_aligned(const void *t, const void *s, size_t len)
+{
+	return len == 0 || memeq8__(t, s, 16 * len);
+}
+
 bool memeq8(const void *p, const void *q, size_t len);
 bool memeq16(const void *p, const void *q, size_t len);
 bool memeq32(const void *p, const void *q, size_t len);
 bool memeq64(const void *p, const void *q, size_t len);
+bool memeq128(const void *p, const void *q, size_t len);
 
 #else