diff --git a/cryptest.sh b/cryptest.sh
index b67f24f3..6bdcf2a0 100755
--- a/cryptest.sh
+++ b/cryptest.sh
@@ -244,6 +244,9 @@ GCC_48_COMPILER=$("$CXX" -v 2>&1 | "$EGREP" -i -c 'gcc version 4\.8')
 GCC_49_COMPILER=$("$CXX" -v 2>&1 | "$EGREP" -i -c 'gcc version 4\.9')
 GCC_49_OR_ABOVE=$("$CXX" -v 2>&1 | "$EGREP" -i -c 'gcc version (4\.9|[5-9]\.[0-9])')
 SUNCC_510_OR_ABOVE=$("$CXX" -V 2>&1 | "$EGREP" -c "CC: (Sun|Studio) .* (5\.1[0-9]|5\.[2-9]|[6-9]\.)")
+SUNCC_511_OR_ABOVE=$("$CXX" -V 2>&1 | "$EGREP" -c "CC: (Sun|Studio) .* (5\.1[1-9]|5\.[2-9]|[6-9]\.)")
+SUNCC_512_OR_ABOVE=$("$CXX" -V 2>&1 | "$EGREP" -c "CC: (Sun|Studio) .* (5\.1[2-9]|5\.[2-9]|[6-9]\.)")
+SUNCC_513_OR_ABOVE=$("$CXX" -V 2>&1 | "$EGREP" -c "CC: (Sun|Studio) .* (5\.1[3-9]|5\.[2-9]|[6-9]\.)")
 
 # Fixup, bad code generation
 if [[ ("$SUNCC_510_OR_ABOVE" -ne "0") ]]; then
@@ -969,21 +972,28 @@ fi
 # Solaris Studio 12.1/SunCC 5.10 (and above) compilers consume GCC inline assembly. However, the compiler does
 #   not declare the CPU features, even when using options like -native and -xarch=<feature>.
 if [[ ("$IS_X86" -ne "0" || "$IS_X64" -ne "0") && ("$IS_SOLARIS" -ne "0") && ("$SUNCC_510_OR_ABOVE" -ne "0") ]]; then
-
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE2__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse3") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE3__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "ssse3") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSSE3__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse4.1") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE4_1__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse4.2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE4_2__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "aes") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AES__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "pclmulqdq") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__PCLMUL__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "rdrand") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__RDRND__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "rdseed") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__RDSEED__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AVX__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AVX2__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI2__"); fi
-	if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "adx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__ADX__"); fi
+	SUNCC_XARCH=
+	if [[ ("$SUNCC_511_OR_ABOVE" -ne "0") ]]; then
+		if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE2__"); SUNCC_XARCH=sse2; fi
+			if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse3") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE3__"); SUNCC_XARCH=ssse3; fi
+			if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "ssse3") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSSE3__"); SUNCC_XARCH=ssse3; fi
+			if [[ ("$SUNCC_512_OR_ABOVE" -ne "0") ]]; then
+				if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse4.1") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE4_1__"); SUNCC_XARCH=ssse4_1; fi
+				if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "sse4.2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__SSE4_2__"); SUNCC_XARCH=ssse4_2; fi
+				if [[ ("$SUNCC_513_OR_ABOVE" -ne "0") ]]; then
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "aes") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AES__"); SUNCC_XARCH=aes; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "pclmulqdq") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__PCLMUL__"); SUNCC_XARCH=aes; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "rdrand") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__RDRND__"); SUNCC_XARCH=avx_i; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "rdseed") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__RDSEED__"); SUNCC_XARCH=avx_i; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AVX__"); SUNCC_XARCH=avx; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "avx2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__AVX2__"); SUNCC_XARCH=avx2; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI__"); SUNCC_XARCH=avx2; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "bmi2") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__BMI2__"); SUNCC_XARCH=avx2; fi
+					if [[ ($(echo -n "$X86_CPU_FLAGS" | "$GREP" -c "adx") -ne "0") ]]; then PLATFORM_CXXFLAGS+=("-D__ADX__"); SUNCC_XARCH=avx2_i; fi
+				fi
+			fi
+	fi
+	PLATFORM_CXXFLAGS+=("-xarch=$SUNCC_XARCH")
 fi
 
 # Please, someone put an end to the madness of determining Features, FPU, ABI, hard floats and soft floats...