[Clang][LLVM] Implement single-multi vectors MOP4{A/S}

Author: virginia-cangelosi

clang/include/clang/Basic/arm_sve.td

@@ -2420,8 +2420,8 @@ let SVETargetGuard = InvalidMode, SMETargetGuard = "sme2" in {
 let SVETargetGuard = InvalidMode, SMETargetGuard = "sme2" in {
   def SVSUNPK_X2 : SInst<"svunpk_{d}[_{1}_x2]", "2h",   "sil",    MergeNone, "aarch64_sve_sunpk_x2", [IsStreaming], []>;
   def SVUUNPK_X2 : SInst<"svunpk_{d}[_{1}_x2]", "2h",   "UsUiUl", MergeNone, "aarch64_sve_uunpk_x2", [IsStreaming], []>;
-  def SVSUNPK_X4 : SInst<"svunpk_{d}[_{3}_x4]", "42.h", "sil",    MergeNone, "aarch64_sve_sunpk_x4", [IsStreaming], []>;
-  def SVUUNPK_X4 : SInst<"svunpk_{d}[_{3}_x4]", "42.h", "UsUiUl", MergeNone, "aarch64_sve_uunpk_x4", [IsStreaming], []>;
+  def SVSUNPK_X4 : SInst<"svunpk_{d}[_{1}_x4]", "42.h", "sil",    MergeNone, "aarch64_sve_sunpk_x4", [IsStreaming], []>;
+  def SVUUNPK_X4 : SInst<"svunpk_{d}[_{1}_x4]", "42.h", "UsUiUl", MergeNone, "aarch64_sve_uunpk_x4", [IsStreaming], []>;
 }
 
 let SVETargetGuard = InvalidMode, SMETargetGuard = "sme2,fp8" in {