[SME] Target parser support for SME (apache#16794)

This commit adds support for recognising when the SME architecture
feature is available based on the target string. A python user can
use `target.features.has_sme` to check availability.

src/target/parsers/aprofile.cc

@@ -111,7 +111,8 @@ static TargetFeatures GetFeatures(TargetJSON target) {
           {"has_sve", Bool(has_feature("sve"))},
           {"has_dotprod", Bool(has_feature("dotprod"))},
           {"has_matmul_i8", Bool(has_feature("i8mm"))},
-          {"has_fp16_simd", Bool(has_feature("fullfp16"))}};
+          {"has_fp16_simd", Bool(has_feature("fullfp16"))},
+          {"has_sme", Bool(has_feature("sme"))}};
 #endif
 
   LOG(WARNING) << "Cannot parse Arm(R)-based target features without LLVM support.";

tests/cpp/target/parsers/aprofile_test.cc

@@ -38,6 +38,7 @@ static float defaultI8MM = 8.6;
 static float optionalI8MM[] = {8.2, 8.3, 8.4, 8.5};
 static float defaultDotProd = 8.4;
 static float optionalDotProd[] = {8.2, 8.3};
+static float optionalSME[] = {9.2, 9.3};
 
 static bool CheckArchitectureAvailability() {
 #if TVM_LLVM_VERSION > 120
@@ -405,13 +406,29 @@ TEST(AProfileParserInvalid, LLVMUnsupportedArchitecture) {
   }
 }
 
+using AProfileOptionalSME = AProfileParserTestWithParam;
+TEST_P(AProfileOptionalSME, OptionalSMESupport) {
+  const std::string arch_attr = "+v9a";
+
+  TargetJSON target = ParseTargetWithAttrs("", "aarch64-arm-none-eabi", {arch_attr});
+  TargetFeatures features = Downcast<TargetFeatures>(target.at("features"));
+  ASSERT_TRUE(IsArch(target));
+  ASSERT_FALSE(Downcast<Bool>(features.at("has_sme")));
+
+  target = ParseTargetWithAttrs("", "aarch64-arm-none-eabi", {arch_attr, "+sme"});
+  features = Downcast<TargetFeatures>(target.at("features"));
+  ASSERT_TRUE(IsArch(target));
+  ASSERT_TRUE(Downcast<Bool>(features.at("has_sme")));
+}
+
 INSTANTIATE_TEST_SUITE_P(AProfileParser, AProfileOptionalI8MM, ::testing::ValuesIn(optionalI8MM));
 INSTANTIATE_TEST_SUITE_P(AProfileParser, AProfileOptionalDotProd,
                          ::testing::ValuesIn(optionalDotProd));
 INSTANTIATE_TEST_SUITE_P(AProfileParser, AProfileOptionalSVE,
                          ::testing::Values(8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9));
 INSTANTIATE_TEST_SUITE_P(AProfileParser, AProfileOptionalFP16,
                          ::testing::Values(8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9));
+INSTANTIATE_TEST_SUITE_P(AProfileParser, AProfileOptionalSME, ::testing::ValuesIn(optionalSME));
 
 }  // namespace aprofile
 }  // namespace parsers