[PowerPC] Implement Elliptic Curve Cryptography (ECC) Instructions (#158362)

lei137 · web-flow · commit 2802ab673e16 · 2025-09-30T12:22:07.000-04:00
New instructions added:

      * xxmulmul
      * xxmulmulhiadd
      * xxmulmulloadd
      * xxssumudm
      * xxssumudmc
      * xxssumudmcext
      * xsaddadduqm
      * xsaddaddsuqm
      * xsaddsubuqm
      * xsaddsubsuqm
      * xsmerge2t1uqm
      * xsmerge2t2uqm
      * xsmerge2t3uqm
      * xsmerge3t1uqm
      * xsrebase2t1uqm
      * xsrebase2t2uqm
      * xsrebase2t3uqm
      * xsrebase2t4uqm
      * xsrebase3t1uqm
      * xsrebase3t2uqm
      * xsrebase3t3uqm
diff --git a/llvm/lib/Target/PowerPC/PPCInstrFuture.td b/llvm/lib/Target/PowerPC/PPCInstrFuture.td
@@ -182,10 +182,113 @@ class XX3Form_XTAB6<bits<6> opcode, bits<8> xo, dag OOL, dag IOL, string asmstr,
   let Inst{31} = XT{5};
 }
 
+class XX3Form_XTAB6_S<bits<5> xo, dag OOL, dag IOL, string asmstr,
+                       list<dag> pattern>
+    : I<59, OOL, IOL, asmstr, NoItinerary> {
+  bits<6> XT;
+  bits<6> XA;
+  bits<6> XB;
+
+  let Pattern = pattern;
+
+  let Inst{6...10} = XT{4...0};
+  let Inst{11...15} = XA{4...0};
+  let Inst{16...20} = XB{4...0};
+  let Inst{24...28} = xo;
+  let Inst{29} = XA{5};
+  let Inst{30} = XB{5};
+  let Inst{31} = XT{5};
+}
+
+class XX3Form_XTAB6_S3<bits<5> xo, dag OOL, dag IOL, string asmstr,
+                       list<dag> pattern>
+    : XX3Form_XTAB6_S<xo, OOL, IOL, asmstr, pattern> {
+
+  bits<3> S;
+  let Inst{21...23} = S;
+}
+
+class XX3Form_XTAB6_3S1<bits<5> xo, dag OOL, dag IOL, string asmstr,
+                       list<dag> pattern>
+    : XX3Form_XTAB6_S<xo, OOL, IOL, asmstr, pattern> {
+
+  bits<1> S0;
+  bits<1> S1;
+  bits<1> S2;
+
+  let Inst{21} = S0;
+  let Inst{22} = S1;
+  let Inst{23} = S2;
+}
+
+class XX3Form_XTAB6_2S1<bits<5> xo, dag OOL, dag IOL, string asmstr,
+                       list<dag> pattern>
+    : XX3Form_XTAB6_S<xo, OOL, IOL, asmstr, pattern> {
+
+  bits<1> S1;
+  bits<1> S2;
+
+  let Inst{21} = 0;
+  let Inst{22} = S1;
+  let Inst{23} = S2;
+}
+
+class XX3Form_XTAB6_P<bits<7> xo, dag OOL, dag IOL, string asmstr,
+                      list<dag> pattern>
+    : I<59, OOL, IOL, asmstr, NoItinerary> {
+
+  bits<6> XT;
+  bits<6> XA;
+  bits<6> XB;
+  bits<1> P;
+
+  let Pattern = pattern;
+
+  let Inst{6...10} = XT{4...0};
+  let Inst{11...15} = XA{4...0};
+  let Inst{16...20} = XB{4...0};
+  let Inst{21} = P;
+  let Inst{22...28} = xo;
+  let Inst{29} = XA{5};
+  let Inst{30} = XB{5};
+  let Inst{31} = XT{5};
+}
+
+// Prefix instruction classes.
+
+class 8RR_XX4Form_XTABC6_P<bits<6> opcode, dag OOL, dag IOL, string asmstr,
+                           InstrItinClass itin, list<dag> pattern>
+    : PI<1, opcode, OOL, IOL, asmstr, itin> {
+  bits<6> XT;
+  bits<6> XA;
+  bits<6> XB;
+  bits<6> XC;
+  bits<1> P;
+
+  let Pattern = pattern;
+
+  // The prefix.
+  let Inst{6...7} = 1;
+  let Inst{8...11} = 0;
+
+  // The instruction.
+  let Inst{38...42} = XT{4...0};
+  let Inst{43...47} = XA{4...0};
+  let Inst{48...52} = XB{4...0};
+  let Inst{53...57} = XC{4...0};
+  let Inst{58} = 1;
+  let Inst{59} = P;
+  let Inst{60} = XC{5};
+  let Inst{61} = XA{5};
+  let Inst{62} = XB{5};
+  let Inst{63} = XT{5};
+}
+
 //-------------------------- Instruction definitions -------------------------//
 // Predicate combinations available:
 // [IsISAFuture]
 // [HasVSX, IsISAFuture]
+// [HasVSX, PrefixInstrs, IsISAFuture]
 
 let Predicates = [IsISAFuture] in {
   defm SUBFUS : XOForm_RTAB5_L1r<31, 72, (outs g8rc:$RT),
@@ -294,6 +397,78 @@ let Predicates = [HasVSX, IsISAFuture] in {
                               "xvmulhuw $XT, $XA, $XB", []>;
   def XVMULHUH: XX3Form_XTAB6<60, 122, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
                               "xvmulhuh $XT, $XA, $XB", []>;
+
+  // Elliptic Curve Cryptography Acceleration Instructions.
+  def XXMULMUL
+      : XX3Form_XTAB6_S3<1, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, u3imm:$S),
+                         "xxmulmul $XT, $XA, $XB, $S", []>;
+  def XXMULMULHIADD
+      : XX3Form_XTAB6_3S1<9, (outs vsrc:$XT),
+                          (ins vsrc:$XA, vsrc:$XB, u1imm:$S0, u1imm:$S1,
+                              u1imm:$S2),
+                          "xxmulmulhiadd $XT, $XA, $XB, $S0, $S1, $S2", []>;
+  def XXMULMULLOADD
+      : XX3Form_XTAB6_2S1<17, (outs vsrc:$XT),
+                          (ins vsrc:$XA, vsrc:$XB, u1imm:$S1, u1imm:$S2),
+                          "xxmulmulloadd $XT, $XA, $XB, $S1, $S2", []>;
+  def XXSSUMUDM
+      : XX3Form_XTAB6_P<25, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, u1imm:$P),
+                        "xxssumudm $XT, $XA, $XB, $P", []>;
+  def XXSSUMUDMC
+      : XX3Form_XTAB6_P<57, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, u1imm:$P),
+                        "xxssumudmc $XT, $XA, $XB, $P", []>;
+  def XSADDADDUQM
+      : XX3Form_XTAB6<59, 96, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsaddadduqm $XT, $XA, $XB", []>;
+  def XSADDADDSUQM
+      : XX3Form_XTAB6<59, 104, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsaddaddsuqm $XT, $XA, $XB", []>;
+  def XSADDSUBUQM
+      : XX3Form_XTAB6<59, 112, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsaddsubuqm $XT, $XA, $XB", []>;
+  def XSADDSUBSUQM
+      : XX3Form_XTAB6<59, 224, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsaddsubsuqm $XT, $XA, $XB", []>;
+  def XSMERGE2T1UQM
+      : XX3Form_XTAB6<59, 232, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsmerge2t1uqm $XT, $XA, $XB", []>;
+  def XSMERGE2T2UQM
+      : XX3Form_XTAB6<59, 240, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsmerge2t2uqm $XT, $XA, $XB", []>;
+  def XSMERGE2T3UQM
+      : XX3Form_XTAB6<59, 89, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsmerge2t3uqm $XT, $XA, $XB", []>;
+  def XSMERGE3T1UQM
+      : XX3Form_XTAB6<59, 121, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsmerge3t1uqm $XT, $XA, $XB", []>;
+  def XSREBASE2T1UQM
+      : XX3Form_XTAB6<59, 145, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase2t1uqm $XT, $XA, $XB", []>;
+  def XSREBASE2T2UQM
+      : XX3Form_XTAB6<59, 177, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase2t2uqm $XT, $XA, $XB", []>;
+  def XSREBASE2T3UQM
+      : XX3Form_XTAB6<59, 209, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase2t3uqm $XT, $XA, $XB", []>;
+  def XSREBASE2T4UQM
+      : XX3Form_XTAB6<59, 217, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase2t4uqm $XT, $XA, $XB", []>;
+  def XSREBASE3T1UQM
+      : XX3Form_XTAB6<59, 241, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase3t1uqm $XT, $XA, $XB", []>;
+  def XSREBASE3T2UQM
+      : XX3Form_XTAB6<59, 249, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase3t2uqm $XT, $XA, $XB", []>;
+  def XSREBASE3T3UQM
+      : XX3Form_XTAB6<59, 195, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB),
+                      "xsrebase3t3uqm $XT, $XA, $XB", []>;
+}
+
+let Predicates = [HasVSX, PrefixInstrs, IsISAFuture] in {
+  def XXSSUMUDMCEXT
+      : 8RR_XX4Form_XTABC6_P<
+            34, (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, vsrc:$XC, u1imm:$P),
+            "xxssumudmcext $XT, $XA, $XB, $XC, $P", IIC_VecGeneral, []>;
 }
 
 //---------------------------- Anonymous Patterns ----------------------------//
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt b/llvm/test/MC/Disassembler/PowerPC/ppc-encoding-ISAFuture.txt
@@ -273,3 +273,66 @@
 
 #CHECK: xvmulhuh  4, 5, 7
 0xf0,0x85,0x3b,0xd0
+
+#CHECK: xxmulmul 8, 3, 4, 2
+0xed,0x03,0x22,0x08
+
+#CHECK: xxmulmulhiadd 8, 3, 4, 1, 0, 1
+0xed,0x03,0x25,0x48
+
+#CHECK: xxmulmulloadd 8, 3, 4, 1, 0
+0xed,0x03,0x22,0x88
+
+#CHECK: xxssumudm 8, 3, 4, 1
+0xed,0x03,0x24,0xc8
+
+#CHECK: xxssumudmc 8, 3, 4, 1
+0xed,0x03,0x25,0xc8
+
+#CHECK: xxssumudmcext 8, 3, 4, 6, 0
+0x05,0x00,0x00,0x00,0x89,0x03,0x21,0xa0
+
+#CHECK: xsaddadduqm  4, 5, 7
+0xec,0x85,0x3b,0x00
+
+#CHECK: xsaddaddsuqm  4, 5, 7
+0xec,0x85,0x3b,0x40
+
+#CHECK: xsaddsubuqm  4, 5, 7
+0xec,0x85,0x3b,0x80
+
+#CHECK: xsaddsubsuqm  4, 5, 7
+0xec,0x85,0x3f,0x00
+
+#CHECK: xsrebase2t1uqm 4, 5, 7
+0xec,0x85,0x3c,0x88
+
+#CHECK: xsrebase2t2uqm 4, 5, 7
+0xec,0x85,0x3d,0x88
+
+#CHECK: xsrebase2t3uqm 4, 5, 7
+0xec,0x85,0x3e,0x88
+
+#CHECK: xsrebase2t4uqm 4, 5, 7
+0xec,0x85,0x3e,0xc8
+
+#CHECK: xsrebase3t1uqm 4, 5, 7
+0xec,0x85,0x3f,0x88
+
+#CHECK: xsrebase3t2uqm 4, 5, 7
+0xec,0x85,0x3f,0xc8
+
+#CHECK: xsrebase3t3uqm 4, 5, 7
+0xec,0x85,0x3e,0x18
+
+#CHECK: xsmerge2t1uqm 4, 5, 7
+0xec,0x85,0x3f,0x40
+
+#CHECK: xsmerge2t2uqm 4, 5, 7
+0xec,0x85,0x3f,0x80
+
+#CHECK: xsmerge2t3uqm 4, 5, 7
+0xec,0x85,0x3a,0xc8
+
+#CHECK: xsmerge3t1uqm 4, 5, 7
+0xec,0x85,0x3b,0xc8
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt b/llvm/test/MC/Disassembler/PowerPC/ppc64le-encoding-ISAFuture.txt
@@ -267,3 +267,66 @@
 
 #CHECK: xvmulhuh  4, 5, 7
 0xd0,0x3b,0x85,0xf0
+
+#CHECK: xxmulmul 8, 3, 4, 2
+0x08,0x22,0x03,0xed
+
+#CHECK: xxmulmulhiadd 8, 3, 4, 1, 0, 1
+0x48,0x25,0x03,0xed
+
+#CHECK: xxmulmulloadd 8, 3, 4, 1, 0
+0x88,0x22,0x03,0xed
+
+#CHECK: xxssumudm 8, 3, 4, 1
+0xc8,0x24,0x03,0xed
+
+#CHECK: xxssumudmc 8, 3, 4, 1
+0xc8,0x25,0x03,0xed
+
+#CHECK: xxssumudmcext 8, 3, 4, 6, 0
+0x00,0x00,0x00,0x05,0xa0,0x21,0x03,0x89
+
+#CHECK: xsaddadduqm  4, 5, 7
+0x00,0x3b,0x85,0xec
+
+#CHECK: xsaddaddsuqm  4, 5, 7
+0x40,0x3b,0x85,0xec
+
+#CHECK: xsaddsubuqm  4, 5, 7
+0x80,0x3b,0x85,0xec
+
+#CHECK: xsaddsubsuqm  4, 5, 7
+0x00,0x3f,0x85,0xec
+
+#CHECK: xsrebase2t1uqm 4, 5, 7
+0x88,0x3c,0x85,0xec
+
+#CHECK: xsrebase2t2uqm 4, 5, 7
+0x88,0x3d,0x85,0xec
+
+#CHECK: xsrebase2t3uqm 4, 5, 7
+0x88,0x3e,0x85,0xec
+
+#CHECK: xsrebase2t4uqm 4, 5, 7
+0xc8,0x3e,0x85,0xec
+
+#CHECK: xsrebase3t1uqm 4, 5, 7
+0x88,0x3f,0x85,0xec
+
+#CHECK: xsrebase3t2uqm 4, 5, 7
+0xc8,0x3f,0x85,0xec
+
+#CHECK: xsrebase3t3uqm 4, 5, 7
+0x18,0x3e,0x85,0xec
+
+#CHECK: xsmerge2t1uqm 4, 5, 7
+0x40,0x3f,0x85,0xec
+
+#CHECK: xsmerge2t2uqm 4, 5, 7
+0x80,0x3f,0x85,0xec
+
+#CHECK: xsmerge2t3uqm 4, 5, 7
+0xc8,0x3a,0x85,0xec
+
+#CHECK: xsmerge3t1uqm 4, 5, 7
+0xc8,0x3b,0x85,0xec
diff --git a/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s b/llvm/test/MC/PowerPC/ppc-encoding-ISAFuture.s
