SPURS kernel v1

Utilities/GNU.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <emmintrin.h>
+
 #ifdef _WIN32
 #define thread_local __declspec(thread)
 #elif __APPLE__
@@ -222,3 +224,27 @@ static __forceinline uint64_t cntlz64(uint64_t arg)
 	}
 #endif
 }
+
+static __forceinline __m128i operator & (__m128i A, __m128i B)
+{
+	return _mm_and_si128(A, B);
+}
+
+static __forceinline __m128i operator | (__m128i A, __m128i B)
+{
+	return _mm_or_si128(A, B);
+}
+
+// compare 16 packed unsigned byte values (greater than)
+static __forceinline __m128i _mm_cmpgt_epu8(__m128i A, __m128i B)
+{
+	// (A xor 0x80) > (B xor 0x80)
+	return _mm_cmpgt_epi8(_mm_xor_si128(A, _mm_set1_epi8(-128)), _mm_xor_si128(B, _mm_set1_epi8(-128)));
+}
+
+// compare 16 packed unsigned byte values (less or equal)
+static __forceinline __m128i _mm_cmple_epu8(__m128i A, __m128i B)
+{
+	// ((B xor 0x80) > (A xor 0x80)) || A == B
+	return _mm_cmpgt_epu8(B, A) | _mm_cmpeq_epi8(A, B);
+}