[RISCV] Use RVPTernary_rrr for accumulator instructions in RISCVInstrInfoP.td. (llvm#173426)

Author: topperc

llvm/lib/Target/RISCV/RISCVInstrInfoP.td

@@ -889,8 +889,8 @@ let Predicates = [HasStdExtP] in {
   def PM2ADDSU_H  : RVPBinary_rr<0b1100, 0b00, 0b101, "pm2addsu.h">;
   def PM4ADDSU_B  : RVPBinary_rr<0b1100, 0b10, 0b101, "pm4addsu.b">;
 
-  def PM2ADDASU_H : RVPBinary_rr<0b1101, 0b00, 0b101, "pm2addasu.h">;
-  def PM4ADDASU_B : RVPBinary_rr<0b1101, 0b10, 0b101, "pm4addasu.b">;
+  def PM2ADDASU_H : RVPTernary_rrr<0b1101, 0b00, 0b101, "pm2addasu.h">;
+  def PM4ADDASU_B : RVPTernary_rrr<0b1101, 0b10, 0b101, "pm4addasu.b">;
 } // Predicates = [HasStdExtP]
 let Predicates = [HasStdExtP, IsRV32], DecoderNamespace = "RV32Only" in {
   def MQACC_H01  : RVPTernary_rrr<0b1111, 0b00, 0b101, "mqacc.h01">;
@@ -925,7 +925,7 @@ let Predicates = [HasStdExtP, IsRV64] in {
 
   def PM2SUB_WX     : RVPBinary_rr<0b1010, 0b01, 0b101, "pm2sub.wx">;
 
-  def PM2SUBA_WX    : RVPBinary_rr<0b1011, 0b01, 0b101, "pm2suba.wx">;
+  def PM2SUBA_WX    : RVPTernary_rrr<0b1011, 0b01, 0b101, "pm2suba.wx">;
 
   def PM2ADDSU_W    : RVPBinary_rr<0b1100, 0b01, 0b101, "pm2addsu.w">;
   def PM4ADDSU_H    : RVPBinary_rr<0b1100, 0b11, 0b101, "pm4addsu.h">;