remove unused patterns, revert unnecessary change in rv64p-valid.s

Author: realqhc

llvm/lib/Target/RISCV/RISCVInstrInfoP.td

@@ -18,12 +18,6 @@
 // Operand and SDNode transformation definitions.
 //===----------------------------------------------------------------------===//
 
-def RVPGPRPairRV32 : RegisterOperand<GPRPair> {
-  let ParserMatchClass = GPRPairRV32Operand;
-  let EncoderMethod = "getRVPGPRPair";
-  let DecoderMethod = "decodeRVPGPRPair";
-}
-
 def simm10 : RISCVSImmLeafOp<10>;
 
 //===----------------------------------------------------------------------===//
@@ -40,20 +34,6 @@ class RVPUnaryImm9<bits<7> funct7, string opcodestr>
   let Inst{24-15} = simm10;
 }
 
-let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
-class RVPUnaryImm9Rdp<bits<7> funct7, string opcodestr>
-    : RVInstIBase<0b010, OPC_OP_IMM_32, (outs RVPGPRPairRV32:$rdp),
-                  (ins simm10:$simm10),
-                  opcodestr, "$rdp, $simm10"> {
-  bits<10> simm10;
-  bits<4> rdp;
-
-  let Inst{31-25} = funct7;
-  let Inst{24-15} = simm10;
-  let Inst{11-8}  = rdp;
-  let Inst{7}     = 0b0;
-}
-
 let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
 class RVPUnaryImm8<bits<8> funct8, string opcodestr>
     : RVInstIBase<0b010, OPC_OP_IMM_32, (outs GPR:$rd), (ins uimm8:$uimm8),

llvm/test/MC/RISCV/rv64p-valid.s

@@ -1,4 +1,4 @@
-# RUN: llvm-mc %s -triple=riscv64 -mattr=+experimental-p -riscv-no-aliases -show-encoding \
+# RUN: llvm-mc %s -triple=riscv64 -mattr=+experimental-p -M no-aliases -show-encoding \
 # RUN:     | FileCheck -check-prefixes=CHECK-ASM,CHECK-ASM-AND-OBJ %s
 # RUN: llvm-mc -filetype=obj --triple=riscv64 -mattr=+experimental-p < %s \
 # RUN:     | llvm-objdump --triple=riscv64 --mattr=+experimental-p -M no-aliases --no-print-imm-hex -d -r - \