[llvm] [PowerPC] Add Dense Math binary integer outer-Product accumulate to DMR Instructions (PR #130791)

[Maryam Moghadas via llvm-commits]

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@@ -69,6 +76,96 @@ class XForm_ATB3<bits<6> opcode, bits<5> o, bits<10> xo, dag OOL, dag IOL,
   let Inst{31} = 0;
 }
 
+class XX3Form_AT3_XAp5B6<bits<6> opcode, bits<8> xo, dag OOL, dag IOL,
+                           string asmstr, InstrItinClass itin,
+                           list<dag> pattern>
+  : I<opcode, OOL, IOL, asmstr, itin> {
+  bits<3> AT;
+  bits<5> XAp;
+  bits<6> XB;
+
+  let Pattern = pattern;
+
+  let Inst{6-8} = AT;
+  let Inst{9-10} = 0;
+  let Inst{11-14} = XAp{3-0};
+  let Inst{15} = 0;
+  let Inst{16-20} = XB{4-0};
+  let Inst{21-28} = xo;
+  let Inst{29}    = XAp{4};
+  let Inst{30}    = XB{5};
+  let Inst{31} = 0;
+}
+
+class MMIRR_XX3Form_X8YP4_XAp5B6<bits<6> opcode, bits<8> xo, dag OOL, dag IOL,
+                                 string asmstr, InstrItinClass itin,
+                                 list<dag> pattern>
+  : PI<1, opcode, OOL, IOL, asmstr, itin> {
+  bits<3> AT;
+  bits<6> XAp;
+  bits<6> XB;
+  bits<8> XMSK;
+  bits<4> YMSK;
+  bits<4> PMSK;
+
+  let Pattern = pattern;
+
+  // The prefix.
+  let Inst{6-7} = 3;
+  let Inst{8-11} = 9;
+  let Inst{12-15} = 0;
+  let Inst{16-19} = PMSK;
+  let Inst{20-27} = XMSK;
+  let Inst{28-31} = YMSK;
+
+  // The instruction.
+  let Inst{38-40} = AT;
+  let Inst{41-42} = 0;
+  let Inst{43-46} = XAp{3-0};
+  let Inst{47} = 0;
+  let Inst{48-52} = XB{4-0};
+  let Inst{53-60} = xo;
+  let Inst{61} = XAp{4};
+  let Inst{62} = XB{5};
+  let Inst{63} = 0;
+}
+
+multiclass DMR_UM_XOEO<bits<6> opcode, bits<8> xo, dag IOL, string asmbase,
+                       string asmstr> {
+  let Predicates = [IsISAFuture] in {
+  def NAME :
+    XX3Form_AT3_XAp5B6<opcode, !or(xo, 0x01), (outs dmr:$AT), IOL,
+                     !strconcat(asmbase#" ", asmstr), IIC_VecFP, []>,
+    RegConstraint<"@earlyclobber $AT">;
+  def PP :
+    XX3Form_AT3_XAp5B6<opcode, xo, (outs dmr:$AT), !con((ins dmr:$ATi), IOL),
+                     !strconcat(asmbase#"pp ", asmstr), IIC_VecFP, []>,
+    RegConstraint<"$ATi = $AT">, NoEncode<"$ATi">;
+  }
+}
+
+multiclass DMR_UM_M448_XOEO<bits<6> opcode, bits<8> xo, dag IOL, string asmbase,
+                            string asmstr> {
+  defm NAME : DMR_UM_XOEO<opcode, xo, IOL, asmbase, asmstr>;
+  let Predicates = [IsISAFuture] in {
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maryammo wrote:

Yes, I added both MMA and PrefixInstrs. 

https://github.com/llvm/llvm-project/pull/130791