diff --git a/llvm/lib/Target/ARM64/AsmParser/ARM64AsmParser.cpp b/llvm/lib/Target/ARM64/AsmParser/ARM64AsmParser.cpp
index 4f265a749697..561d8d5aff13 100644
--- a/llvm/lib/Target/ARM64/AsmParser/ARM64AsmParser.cpp
+++ b/llvm/lib/Target/ARM64/AsmParser/ARM64AsmParser.cpp
@@ -3604,204 +3604,6 @@ bool ARM64AsmParser::validateInstruction(MCInst &Inst,
     }
     return false;
   }
-  case ARM64::LDRBpre:
-  case ARM64::LDRHpre:
-  case ARM64::LDRSBWpre:
-  case ARM64::LDRSBXpre:
-  case ARM64::LDRSHWpre:
-  case ARM64::LDRSHXpre:
-  case ARM64::LDRWpre:
-  case ARM64::LDRXpre:
-  case ARM64::LDRSpre:
-  case ARM64::LDRDpre:
-  case ARM64::LDRQpre:
-  case ARM64::STRBpre:
-  case ARM64::STRHpre:
-  case ARM64::STRWpre:
-  case ARM64::STRXpre:
-  case ARM64::STRSpre:
-  case ARM64::STRDpre:
-  case ARM64::STRQpre:
-  case ARM64::LDRBpost:
-  case ARM64::LDRHpost:
-  case ARM64::LDRSBWpost:
-  case ARM64::LDRSBXpost:
-  case ARM64::LDRSHWpost:
-  case ARM64::LDRSHXpost:
-  case ARM64::LDRWpost:
-  case ARM64::LDRXpost:
-  case ARM64::LDRSpost:
-  case ARM64::LDRDpost:
-  case ARM64::LDRQpost:
-  case ARM64::STRBpost:
-  case ARM64::STRHpost:
-  case ARM64::STRWpost:
-  case ARM64::STRXpost:
-  case ARM64::STRSpost:
-  case ARM64::STRDpost:
-  case ARM64::STRQpost:
-  case ARM64::LDTRXi:
-  case ARM64::LDTRWi:
-  case ARM64::LDTRHi:
-  case ARM64::LDTRBi:
-  case ARM64::LDTRSHWi:
-  case ARM64::LDTRSHXi:
-  case ARM64::LDTRSBWi:
-  case ARM64::LDTRSBXi:
-  case ARM64::LDTRSWi:
-  case ARM64::STTRWi:
-  case ARM64::STTRXi:
-  case ARM64::STTRHi:
-  case ARM64::STTRBi:
-  case ARM64::LDURWi:
-  case ARM64::LDURXi:
-  case ARM64::LDURSi:
-  case ARM64::LDURDi:
-  case ARM64::LDURQi:
-  case ARM64::LDURHi:
-  case ARM64::LDURBi:
-  case ARM64::LDURSHWi:
-  case ARM64::LDURSHXi:
-  case ARM64::LDURSBWi:
-  case ARM64::LDURSBXi:
-  case ARM64::LDURSWi:
-  case ARM64::PRFUMi:
-  case ARM64::STURWi:
-  case ARM64::STURXi:
-  case ARM64::STURSi:
-  case ARM64::STURDi:
-  case ARM64::STURQi:
-  case ARM64::STURHi:
-  case ARM64::STURBi: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(2).isImm())
-      return Error(Loc[1], "immediate value expected");
-    int64_t offset = Inst.getOperand(2).getImm();
-    if (offset > 255 || offset < -256)
-      return Error(Loc[1], "offset value out of range");
-    return false;
-  }
-  case ARM64::LDRSro:
-  case ARM64::LDRWro:
-  case ARM64::LDRSWro:
-  case ARM64::STRWro:
-  case ARM64::STRSro: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(3).isImm())
-      return Error(Loc[1], "immediate value expected");
-    int64_t shift = Inst.getOperand(3).getImm();
-    ARM64_AM::ShiftExtendType type = ARM64_AM::getMemExtendType(shift);
-    if (type != ARM64_AM::UXTW && type != ARM64_AM::UXTX &&
-        type != ARM64_AM::SXTW && type != ARM64_AM::SXTX)
-      return Error(Loc[1], "shift type invalid");
-    return false;
-  }
-  case ARM64::LDRDro:
-  case ARM64::LDRQro:
-  case ARM64::LDRXro:
-  case ARM64::PRFMro:
-  case ARM64::STRXro:
-  case ARM64::STRDro:
-  case ARM64::STRQro: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(3).isImm())
-      return Error(Loc[1], "immediate value expected");
-    int64_t shift = Inst.getOperand(3).getImm();
-    ARM64_AM::ShiftExtendType type = ARM64_AM::getMemExtendType(shift);
-    if (type != ARM64_AM::UXTW && type != ARM64_AM::UXTX &&
-        type != ARM64_AM::SXTW && type != ARM64_AM::SXTX)
-      return Error(Loc[1], "shift type invalid");
-    return false;
-  }
-  case ARM64::LDRHro:
-  case ARM64::LDRHHro:
-  case ARM64::LDRSHWro:
-  case ARM64::LDRSHXro:
-  case ARM64::STRHro:
-  case ARM64::STRHHro: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(3).isImm())
-      return Error(Loc[1], "immediate value expected");
-    int64_t shift = Inst.getOperand(3).getImm();
-    ARM64_AM::ShiftExtendType type = ARM64_AM::getMemExtendType(shift);
-    if (type != ARM64_AM::UXTW && type != ARM64_AM::UXTX &&
-        type != ARM64_AM::SXTW && type != ARM64_AM::SXTX)
-      return Error(Loc[1], "shift type invalid");
-    return false;
-  }
-  case ARM64::LDRBro:
-  case ARM64::LDRBBro:
-  case ARM64::LDRSBWro:
-  case ARM64::LDRSBXro:
-  case ARM64::STRBro:
-  case ARM64::STRBBro: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(3).isImm())
-      return Error(Loc[1], "immediate value expected");
-    int64_t shift = Inst.getOperand(3).getImm();
-    ARM64_AM::ShiftExtendType type = ARM64_AM::getMemExtendType(shift);
-    if (type != ARM64_AM::UXTW && type != ARM64_AM::UXTX &&
-        type != ARM64_AM::SXTW && type != ARM64_AM::SXTX)
-      return Error(Loc[1], "shift type invalid");
-    return false;
-  }
-  case ARM64::LDPWi:
-  case ARM64::LDPXi:
-  case ARM64::LDPSi:
-  case ARM64::LDPDi:
-  case ARM64::LDPQi:
-  case ARM64::LDPSWi:
-  case ARM64::STPWi:
-  case ARM64::STPXi:
-  case ARM64::STPSi:
-  case ARM64::STPDi:
-  case ARM64::STPQi:
-  case ARM64::LDPWpre:
-  case ARM64::LDPXpre:
-  case ARM64::LDPSpre:
-  case ARM64::LDPDpre:
-  case ARM64::LDPQpre:
-  case ARM64::LDPSWpre:
-  case ARM64::STPWpre:
-  case ARM64::STPXpre:
-  case ARM64::STPSpre:
-  case ARM64::STPDpre:
-  case ARM64::STPQpre:
-  case ARM64::LDPWpost:
-  case ARM64::LDPXpost:
-  case ARM64::LDPSpost:
-  case ARM64::LDPDpost:
-  case ARM64::LDPQpost:
-  case ARM64::LDPSWpost:
-  case ARM64::STPWpost:
-  case ARM64::STPXpost:
-  case ARM64::STPSpost:
-  case ARM64::STPDpost:
-  case ARM64::STPQpost:
-  case ARM64::LDNPWi:
-  case ARM64::LDNPXi:
-  case ARM64::LDNPSi:
-  case ARM64::LDNPDi:
-  case ARM64::LDNPQi:
-  case ARM64::STNPWi:
-  case ARM64::STNPXi:
-  case ARM64::STNPSi:
-  case ARM64::STNPDi:
-  case ARM64::STNPQi: {
-    // FIXME: Should accept expressions and error in fixup evaluation
-    // if out of range.
-    if (!Inst.getOperand(3).isImm())
-      return Error(Loc[2], "immediate value expected");
-    int64_t offset = Inst.getOperand(3).getImm();
-    if (offset > 63 || offset < -64)
-      return Error(Loc[2], "offset value out of range");
-    return false;
-  }
   default:
     return false;
   }