Move FeatureSVEB16B16 to Armv9.4 features

Author: SpencerAbson

llvm/lib/Target/AArch64/AArch64Features.td

@@ -418,9 +418,6 @@ def FeatureSMEI16I64 : ExtensionWithMArch<"sme-i16i64", "SMEI16I64", "FEAT_SME_I
 def FeatureSMEFA64 : ExtensionWithMArch<"sme-fa64", "SMEFA64", "FEAT_SME_FA64",
   "Enable the full A64 instruction set in streaming SVE mode", [FeatureSME, FeatureSVE2]>;
 
-def FeatureSVEB16B16: ExtensionWithMArch<"sve-b16b16", "SVEB16B16", "FEAT_SVE_B16B16",
-  "Enable SVE2.1 non-widening and SME2.1 Z-targeting non-widening BFloat16 to BFloat16 instructions">;
-
 //===----------------------------------------------------------------------===//
 //  Armv9.3 Architecture Extensions
 //===----------------------------------------------------------------------===//
@@ -441,6 +438,9 @@ def FeatureSVE2p1: ExtensionWithMArch<"sve2p1", "SVE2p1", "FEAT_SVE2p1",
 def FeatureB16B16 : ExtensionWithMArch<"b16b16", "B16B16", "FEAT_B16B16",
   "Enable SME2.1 ZA-targeting non-widening BFloat16 to BFloat16 instructions", [FeatureBF16]>;
 
+def FeatureSVEB16B16: ExtensionWithMArch<"sve-b16b16", "SVEB16B16", "FEAT_SVE_B16B16",
+  "Enable SVE2.1 non-widening and SME2.1 Z-targeting non-widening BFloat16 to BFloat16 instructions">;
+
 def FeatureSMEF16F16 : ExtensionWithMArch<"sme-f16f16", "SMEF16F16", "FEAT_SME_F16F16",
   "Enable SME non-widening Float16 instructions", [FeatureSME2]>;