diff --git a/llvm/lib/Target/AArch64/AArch64RegisterInfo.td b/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
--- a/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64RegisterInfo.td
@@ -901,16 +901,8 @@
 def PPR64  : PPRRegOp<"d", PPRAsmOp64,  ElementSizeD,  PPR>;
 
 def PPRAsmOp3bAny : PPRAsmOperand<"Predicate3bAny", "PPR_3b",  0>;
-def PPRAsmOp3b8   : PPRAsmOperand<"Predicate3bB",   "PPR_3b",  8>;
-def PPRAsmOp3b16  : PPRAsmOperand<"Predicate3bH",   "PPR_3b", 16>;
-def PPRAsmOp3b32  : PPRAsmOperand<"Predicate3bS",   "PPR_3b", 32>;
-def PPRAsmOp3b64  : PPRAsmOperand<"Predicate3bD",   "PPR_3b", 64>;
 
 def PPR3bAny : PPRRegOp<"",  PPRAsmOp3bAny, ElementSizeNone, PPR_3b>;
-def PPR3b8   : PPRRegOp<"b", PPRAsmOp3b8,   ElementSizeB, PPR_3b>;
-def PPR3b16  : PPRRegOp<"h", PPRAsmOp3b16,  ElementSizeH, PPR_3b>;
-def PPR3b32  : PPRRegOp<"s", PPRAsmOp3b32,  ElementSizeS, PPR_3b>;
-def PPR3b64  : PPRRegOp<"d", PPRAsmOp3b64,  ElementSizeD, PPR_3b>;
 
 //******************************************************************************
 
diff --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -5230,14 +5230,6 @@
     return Error(Loc, "invalid predicate register.");
   case Match_InvalidSVEPredicate3bAnyReg:
     return Error(Loc, "invalid restricted predicate register, expected p0..p7 (without element suffix)");
-  case Match_InvalidSVEPredicate3bBReg:
-    return Error(Loc, "invalid restricted predicate register, expected p0.b..p7.b");
-  case Match_InvalidSVEPredicate3bHReg:
-    return Error(Loc, "invalid restricted predicate register, expected p0.h..p7.h");
-  case Match_InvalidSVEPredicate3bSReg:
-    return Error(Loc, "invalid restricted predicate register, expected p0.s..p7.s");
-  case Match_InvalidSVEPredicate3bDReg:
-    return Error(Loc, "invalid restricted predicate register, expected p0.d..p7.d");
   case Match_InvalidSVEExactFPImmOperandHalfOne:
     return Error(Loc, "Invalid floating point constant, expected 0.5 or 1.0.");
   case Match_InvalidSVEExactFPImmOperandHalfTwo:
@@ -5785,10 +5777,6 @@
   case Match_InvalidSVEPredicateSReg:
   case Match_InvalidSVEPredicateDReg:
   case Match_InvalidSVEPredicate3bAnyReg:
-  case Match_InvalidSVEPredicate3bBReg:
-  case Match_InvalidSVEPredicate3bHReg:
-  case Match_InvalidSVEPredicate3bSReg:
-  case Match_InvalidSVEPredicate3bDReg:
   case Match_InvalidSVEExactFPImmOperandHalfOne:
   case Match_InvalidSVEExactFPImmOperandHalfTwo:
   case Match_InvalidSVEExactFPImmOperandZeroOne: