Added encoding bits to mpy instructions

[jverma]

Please enable assembler test only for the Hexagon backend.

lib/Target/Hexagon/HexagonIntrinsics.td

 //===-- HexagonIntrinsics.td - Instruction intrinsics ------*- tablegen -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 // This is populated based on the following specs:
 // Hexagon V2 Architecture
 // Application-Level Specification
 // 80-V9418-8 Rev. B
 // March 4, 2008
 //===----------------------------------------------------------------------===//
 
+// MTYPE / MPYS / Scalar 16x16 multiply signed/unsigned.
+//Rd=mpy[u](Rs.[H|L],Rt.[H|L])[:<<1][:rnd][:sat]
+
+// M2_mpyu_lh_s1:
+let hasNewValue = 1, opNewValue = 0 in
+class T_M2_mpy < bits<2> LHbits, bit isSat, bit isRnd,
+                 bit hasShift, bit isUnsigned, Intrinsic IntID >
+  : MInst < (outs IntRegs:$Rd), (ins IntRegs:$Rs, IntRegs:$Rt),
+  "$Rd = "#!if(isUnsigned,"mpyu","mpy")#"($Rs."#!if(LHbits{1},"h","l")
+                                       #", $Rt."#!if(LHbits{0},"h)","l)")
+                                       #!if(hasShift,":<<1","")
+                                       #!if(isRnd,":rnd","")
+                                       #!if(isSat,":sat",""),
+  [(set IntRegs:$Rd, (IntID IntRegs:$Rs, IntRegs:$Rt))], "", M_tc_3x_SLOT23 > {
+    bits<5> Rd;
+    bits<5> Rs;
+    bits<5> Rt;
+
+    let IClass = 0b1110;
+
+    let Inst{27-24} = 0b1100;
+    let Inst{23} = hasShift;
+    let Inst{22} = isUnsigned;
+    let Inst{21} = isRnd;
+    let Inst{7} = isSat;
+    let Inst{6-5} = LHbits;
+    let Inst{4-0} = Rd;
+    let Inst{20-16} = Rs;
+    let Inst{12-8} = Rt;
+  }
+
+//Rd=mpy(Rs.[H|L],Rt.[H|L])[:<<1]
+def HEXAGON_M2_mpy_ll_s1: T_M2_mpy<0b00, 0, 0, 1, 0, int_hexagon_M2_mpy_ll_s1>;
+def HEXAGON_M2_mpy_ll_s0: T_M2_mpy<0b00, 0, 0, 0, 0, int_hexagon_M2_mpy_ll_s0>;
+def HEXAGON_M2_mpy_lh_s1: T_M2_mpy<0b01, 0, 0, 1, 0, int_hexagon_M2_mpy_lh_s1>;
+def HEXAGON_M2_mpy_lh_s0: T_M2_mpy<0b01, 0, 0, 0, 0, int_hexagon_M2_mpy_lh_s0>;
+def HEXAGON_M2_mpy_hl_s1: T_M2_mpy<0b10, 0, 0, 1, 0, int_hexagon_M2_mpy_hl_s1>;
+def HEXAGON_M2_mpy_hl_s0: T_M2_mpy<0b10, 0, 0, 0, 0, int_hexagon_M2_mpy_hl_s0>;
+def HEXAGON_M2_mpy_hh_s1: T_M2_mpy<0b11, 0, 0, 1, 0, int_hexagon_M2_mpy_hh_s1>;
+def HEXAGON_M2_mpy_hh_s0: T_M2_mpy<0b11, 0, 0, 0, 0, int_hexagon_M2_mpy_hh_s0>;
+
+//Rd=mpyu(Rs.[H|L],Rt.[H|L])[:<<1]
+def HEXAGON_M2_mpyu_ll_s1:
+                        T_M2_mpy<0b00, 0, 0, 1, 1, int_hexagon_M2_mpyu_ll_s1>;
+def HEXAGON_M2_mpyu_ll_s0:
+                        T_M2_mpy<0b00, 0, 0, 0, 1, int_hexagon_M2_mpyu_ll_s0>;
+def HEXAGON_M2_mpyu_lh_s1:
+                        T_M2_mpy<0b01, 0, 0, 1, 1, int_hexagon_M2_mpyu_lh_s1>;
+def HEXAGON_M2_mpyu_lh_s0:
+                        T_M2_mpy<0b01, 0, 0, 0, 1, int_hexagon_M2_mpyu_lh_s0>;
+def HEXAGON_M2_mpyu_hl_s1:
+                        T_M2_mpy<0b10, 0, 0, 1, 1, int_hexagon_M2_mpyu_hl_s1>;
+def HEXAGON_M2_mpyu_hl_s0:
+                        T_M2_mpy<0b10, 0, 0, 0, 1, int_hexagon_M2_mpyu_hl_s0>;
+def HEXAGON_M2_mpyu_hh_s1:
+                        T_M2_mpy<0b11, 0, 0, 1, 1, int_hexagon_M2_mpyu_hh_s1>;
+def HEXAGON_M2_mpyu_hh_s0:
+                        T_M2_mpy<0b11, 0, 0, 0, 1, int_hexagon_M2_mpyu_hh_s0>;
+
+//Rd=mpy(Rs.[H|L],Rt.[H|L])[:<<1][:sat]
+let Defs = [USR] in {
+def HEXAGON_M2_mpy_sat_ll_s1 :
+                    T_M2_mpy <0b00, 1, 0, 1, 0, int_hexagon_M2_mpy_sat_ll_s1>;
+def HEXAGON_M2_mpy_sat_ll_s0 :
+                    T_M2_mpy <0b00, 1, 0, 0, 0, int_hexagon_M2_mpy_sat_ll_s0>;
+def HEXAGON_M2_mpy_sat_lh_s1 :
+                    T_M2_mpy <0b01, 1, 0, 1, 0, int_hexagon_M2_mpy_sat_lh_s1>;
+def HEXAGON_M2_mpy_sat_lh_s0 :
+                    T_M2_mpy <0b01, 1, 0, 0, 0, int_hexagon_M2_mpy_sat_lh_s0>;
+def HEXAGON_M2_mpy_sat_hl_s1 :
+                    T_M2_mpy <0b10, 1, 0, 1, 0, int_hexagon_M2_mpy_sat_hl_s1>;
+def HEXAGON_M2_mpy_sat_hl_s0 :
+                    T_M2_mpy <0b10, 1, 0, 0, 0, int_hexagon_M2_mpy_sat_hl_s0>;
+def HEXAGON_M2_mpy_sat_hh_s1 :
+                    T_M2_mpy <0b11, 1, 0, 1, 0, int_hexagon_M2_mpy_sat_hh_s1>;
+def HEXAGON_M2_mpy_sat_hh_s0 :
+                    T_M2_mpy <0b11, 1, 0, 0, 0, int_hexagon_M2_mpy_sat_hh_s0>;
+}
+
+//Rd=mpy(Rs.[H|L],Rt.[H|L])[:<<1][:rnd]
+def HEXAGON_M2_mpy_rnd_ll_s1 :
+                    T_M2_mpy <0b00, 0, 1, 1, 0, int_hexagon_M2_mpy_rnd_ll_s1>;
+def HEXAGON_M2_mpy_rnd_ll_s0 :
+                    T_M2_mpy <0b00, 0, 1, 0, 0, int_hexagon_M2_mpy_rnd_ll_s0>;
+def HEXAGON_M2_mpy_rnd_lh_s1 :
+                    T_M2_mpy <0b01, 0, 1, 1, 0, int_hexagon_M2_mpy_rnd_lh_s1>;
+def HEXAGON_M2_mpy_rnd_lh_s0 :
+                    T_M2_mpy <0b01, 0, 1, 0, 0, int_hexagon_M2_mpy_rnd_lh_s0>;
+def HEXAGON_M2_mpy_rnd_hl_s1 :
+                    T_M2_mpy <0b10, 0, 1, 1, 0, int_hexagon_M2_mpy_rnd_hl_s1>;
+def HEXAGON_M2_mpy_rnd_hl_s0 :
+                    T_M2_mpy <0b10, 0, 1, 0, 0, int_hexagon_M2_mpy_rnd_hl_s0>;
+def HEXAGON_M2_mpy_rnd_hh_s1 :
+                    T_M2_mpy <0b11, 0, 1, 1, 0, int_hexagon_M2_mpy_rnd_hh_s1>;
+def HEXAGON_M2_mpy_rnd_hh_s0 :
+                    T_M2_mpy <0b11, 0, 1, 0, 0, int_hexagon_M2_mpy_rnd_hh_s0>;
+
+//Rd=mpy(Rs.[H|L],Rt.[H|L])[:<<1][:rnd][:sat]
+let Defs = [USR] in {
+def HEXAGON_M2_mpy_sat_rnd_ll_s1 :
+                  T_M2_mpy <0b00, 1, 1, 1, 0, int_hexagon_M2_mpy_sat_rnd_ll_s1>;
+def HEXAGON_M2_mpy_sat_rnd_ll_s0 :
+                  T_M2_mpy <0b00, 1, 1, 0, 0, int_hexagon_M2_mpy_sat_rnd_ll_s0>;
+def HEXAGON_M2_mpy_sat_rnd_lh_s1 :
+                  T_M2_mpy <0b01, 1, 1, 1, 0, int_hexagon_M2_mpy_sat_rnd_lh_s1>;
+def HEXAGON_M2_mpy_sat_rnd_lh_s0 :
+                  T_M2_mpy <0b01, 1, 1, 0, 0, int_hexagon_M2_mpy_sat_rnd_lh_s0>;
+def HEXAGON_M2_mpy_sat_rnd_hl_s1 :
+                  T_M2_mpy <0b10, 1, 1, 1, 0, int_hexagon_M2_mpy_sat_rnd_hl_s1>;
+def HEXAGON_M2_mpy_sat_rnd_hl_s0 :
+                  T_M2_mpy <0b10, 1, 1, 0, 0, int_hexagon_M2_mpy_sat_rnd_hl_s0>;
+def HEXAGON_M2_mpy_sat_rnd_hh_s1 :
+                  T_M2_mpy <0b11, 1, 1, 1, 0, int_hexagon_M2_mpy_sat_rnd_hh_s1>;
+def HEXAGON_M2_mpy_sat_rnd_hh_s0 :
+                  T_M2_mpy <0b11, 1, 1, 0, 0, int_hexagon_M2_mpy_sat_rnd_hh_s0>;
+}
+
 //
 // ALU 32 types.
 //
 
 class qi_ALU32_sisi<string opc, Intrinsic IntID>
   : ALU32_rr<(outs PredRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1, $src2)")),
              [(set PredRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
: MInst<(outs DoubleRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              [(set DoubleRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
 
 class si_MInst_sisi_hh<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.H)")),
              [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
-class si_MInst_sisi_hh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.H):<<1")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
 class si_MInst_sisi_lh<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.H)")),
              [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
-class si_MInst_sisi_lh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.H):<<1")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
 class si_MInst_sisi_hl<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.L)")),
              [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
-class si_MInst_sisi_hl_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.L):<<1")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
 class si_MInst_sisi_ll<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.L)")),
              [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
-class si_MInst_sisi_ll_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.L):<<1")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
 class si_MInst_sisi_up<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1, $src2)")),
              [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
 
 class di_MInst_didi<string opc, Intrinsic IntID>
   : MInst<(outs DoubleRegs:$dst), (ins DoubleRegs:$src1, DoubleRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1, $src2)")),
: MInst<(outs IntRegs:$dst), (ins DoubleRegs:$src1, DoubleRegs:$src2),
                                               "($src1, $src2):<<1:rnd:sat")),
              [(set IntRegs:$dst, (IntID DoubleRegs:$src1, DoubleRegs:$src2))]>;
 
 class si_MInst_didi_rnd_sat<string opc, Intrinsic IntID>
   : MInst<(outs IntRegs:$dst), (ins DoubleRegs:$src1, DoubleRegs:$src2),
              !strconcat("$dst = ", !strconcat(opc , "($src1, $src2):rnd:sat")),
              [(set IntRegs:$dst, (IntID DoubleRegs:$src1, DoubleRegs:$src2))]>;
 
-class si_MInst_sisi_sat_hh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.H):sat")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_hh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.H, $src2.H):<<1:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_hl<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.H, $src2.L):sat")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_hl_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.H, $src2.L):<<1:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_lh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.H):sat")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_lh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.L, $src2.H):<<1:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_ll<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-             !strconcat("$dst = ", !strconcat(opc , "($src1.L, $src2.L):sat")),
-             [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_ll_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.L, $src2.L):<<1:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_hh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.H, $src2.H):rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_hh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.H, $src2.H):rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_hh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ", !strconcat(opc ,
-                                                "($src1.H, $src2.H):<<1:rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_hh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc ,
-                                     "($src1.H, $src2.H):<<1:rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_hl<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.H, $src2.L):rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_hl_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.H, $src2.L):<<1:rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_hl<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.H, $src2.L):rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_hl_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.H, $src2.L):<<1:rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_lh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.H):rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_lh<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.H):rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_lh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.H):<<1:rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_lh_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.H):<<1:rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_ll<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.L):rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_sat_rnd_ll_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.L):<<1:rnd:sat")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_ll<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.L):rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
-class si_MInst_sisi_rnd_ll_s1<string opc, Intrinsic IntID>
-  : MInst<(outs IntRegs:$dst), (ins IntRegs:$src1, IntRegs:$src2),
-               !strconcat("$dst = ",
-                          !strconcat(opc , "($src1.L, $src2.L):<<1:rnd")),
-               [(set IntRegs:$dst, (IntID IntRegs:$src1, IntRegs:$src2))]>;
-
 class di_MInst_dididi_acc_sat<string opc, Intrinsic IntID>
   : MInst_acc<(outs DoubleRegs:$dst), (ins DoubleRegs:$dst2,
                                            DoubleRegs:$src1, DoubleRegs:$src2),
                !strconcat("$dst += ", !strconcat(opc , "($src1, $src2):sat")),
                [(set DoubleRegs:$dst, (IntID DoubleRegs:$dst2,
                                              DoubleRegs:$src1,
                                              DoubleRegs:$src2))],
                "$dst2 = $dst">;

 
 /********************************************************************
 *            MTYPE/MPYS                                             *
 *********************************************************************/
 
 // MTYPE / MPYS / Scalar 16x16 multiply signed.
 //Rd=mpy(Rs.[H|L],Rt.[H|L:<<0|:<<1]|
 //          [:<<0[:rnd|:sat|:rnd:sat]|:<<1[:rnd|:sat|:rnd:sat]]]
-def HEXAGON_M2_mpy_hh_s0:
-  si_MInst_sisi_hh                <"mpy",     int_hexagon_M2_mpy_hh_s0>;
-def HEXAGON_M2_mpy_hh_s1:
-  si_MInst_sisi_hh_s1             <"mpy",     int_hexagon_M2_mpy_hh_s1>;
-def HEXAGON_M2_mpy_rnd_hh_s1:
-  si_MInst_sisi_rnd_hh_s1         <"mpy",     int_hexagon_M2_mpy_rnd_hh_s1>;
-def HEXAGON_M2_mpy_sat_rnd_hh_s1:
-  si_MInst_sisi_sat_rnd_hh_s1     <"mpy",     int_hexagon_M2_mpy_sat_rnd_hh_s1>;
-def HEXAGON_M2_mpy_sat_hh_s1:
-  si_MInst_sisi_sat_hh_s1         <"mpy",     int_hexagon_M2_mpy_sat_hh_s1>;
-def HEXAGON_M2_mpy_rnd_hh_s0:
-  si_MInst_sisi_rnd_hh            <"mpy",     int_hexagon_M2_mpy_rnd_hh_s0>;
-def HEXAGON_M2_mpy_sat_rnd_hh_s0:
-  si_MInst_sisi_sat_rnd_hh        <"mpy",     int_hexagon_M2_mpy_sat_rnd_hh_s0>;
-def HEXAGON_M2_mpy_sat_hh_s0:
-  si_MInst_sisi_sat_hh            <"mpy",     int_hexagon_M2_mpy_sat_hh_s0>;
-
-def HEXAGON_M2_mpy_hl_s0:
-  si_MInst_sisi_hl                <"mpy",     int_hexagon_M2_mpy_hl_s0>;
-def HEXAGON_M2_mpy_hl_s1:
-  si_MInst_sisi_hl_s1             <"mpy",     int_hexagon_M2_mpy_hl_s1>;
-def HEXAGON_M2_mpy_rnd_hl_s1:
-  si_MInst_sisi_rnd_hl_s1         <"mpy",     int_hexagon_M2_mpy_rnd_hl_s1>;
-def HEXAGON_M2_mpy_sat_rnd_hl_s1:
-  si_MInst_sisi_sat_rnd_hl_s1     <"mpy",     int_hexagon_M2_mpy_sat_rnd_hl_s1>;
-def HEXAGON_M2_mpy_sat_hl_s1:
-  si_MInst_sisi_sat_hl_s1         <"mpy",     int_hexagon_M2_mpy_sat_hl_s1>;
-def HEXAGON_M2_mpy_rnd_hl_s0:
-  si_MInst_sisi_rnd_hl            <"mpy",     int_hexagon_M2_mpy_rnd_hl_s0>;
-def HEXAGON_M2_mpy_sat_rnd_hl_s0:
-  si_MInst_sisi_sat_rnd_hl        <"mpy",     int_hexagon_M2_mpy_sat_rnd_hl_s0>;
-def HEXAGON_M2_mpy_sat_hl_s0:
-  si_MInst_sisi_sat_hl            <"mpy",     int_hexagon_M2_mpy_sat_hl_s0>;
-
-def HEXAGON_M2_mpy_lh_s0:
-  si_MInst_sisi_lh                <"mpy",     int_hexagon_M2_mpy_lh_s0>;
-def HEXAGON_M2_mpy_lh_s1:
-  si_MInst_sisi_lh_s1             <"mpy",     int_hexagon_M2_mpy_lh_s1>;
-def HEXAGON_M2_mpy_rnd_lh_s1:
-  si_MInst_sisi_rnd_lh_s1         <"mpy",     int_hexagon_M2_mpy_rnd_lh_s1>;
-def HEXAGON_M2_mpy_sat_rnd_lh_s1:
-  si_MInst_sisi_sat_rnd_lh_s1     <"mpy",     int_hexagon_M2_mpy_sat_rnd_lh_s1>;
-def HEXAGON_M2_mpy_sat_lh_s1:
-  si_MInst_sisi_sat_lh_s1         <"mpy",     int_hexagon_M2_mpy_sat_lh_s1>;
-def HEXAGON_M2_mpy_rnd_lh_s0:
-  si_MInst_sisi_rnd_lh            <"mpy",     int_hexagon_M2_mpy_rnd_lh_s0>;
-def HEXAGON_M2_mpy_sat_rnd_lh_s0:
-  si_MInst_sisi_sat_rnd_lh        <"mpy",     int_hexagon_M2_mpy_sat_rnd_lh_s0>;
-def HEXAGON_M2_mpy_sat_lh_s0:
-  si_MInst_sisi_sat_lh            <"mpy",     int_hexagon_M2_mpy_sat_lh_s0>;
-
-def HEXAGON_M2_mpy_ll_s0:
-  si_MInst_sisi_ll                <"mpy",     int_hexagon_M2_mpy_ll_s0>;
-def HEXAGON_M2_mpy_ll_s1:
-  si_MInst_sisi_ll_s1             <"mpy",     int_hexagon_M2_mpy_ll_s1>;
-def HEXAGON_M2_mpy_rnd_ll_s1:
-  si_MInst_sisi_rnd_ll_s1         <"mpy",     int_hexagon_M2_mpy_rnd_ll_s1>;
-def HEXAGON_M2_mpy_sat_rnd_ll_s1:
-  si_MInst_sisi_sat_rnd_ll_s1     <"mpy",     int_hexagon_M2_mpy_sat_rnd_ll_s1>;
-def HEXAGON_M2_mpy_sat_ll_s1:
-  si_MInst_sisi_sat_ll_s1         <"mpy",     int_hexagon_M2_mpy_sat_ll_s1>;
-def HEXAGON_M2_mpy_rnd_ll_s0:
-  si_MInst_sisi_rnd_ll            <"mpy",     int_hexagon_M2_mpy_rnd_ll_s0>;
-def HEXAGON_M2_mpy_sat_rnd_ll_s0:
-  si_MInst_sisi_sat_rnd_ll        <"mpy",     int_hexagon_M2_mpy_sat_rnd_ll_s0>;
-def HEXAGON_M2_mpy_sat_ll_s0:
-  si_MInst_sisi_sat_ll            <"mpy",     int_hexagon_M2_mpy_sat_ll_s0>;
-
 //Rdd=mpy(Rs.[H|L],Rt.[H|L])[[:<<0|:<<1]|[:<<0:rnd|:<<1:rnd]]
 def HEXAGON_M2_mpyd_hh_s0:
   di_MInst_sisi_hh                <"mpy",     int_hexagon_M2_mpyd_hh_s0>;
 def HEXAGON_M2_mpyd_hh_s1:
   di_MInst_sisi_hh_s1             <"mpy",     int_hexagon_M2_mpyd_hh_s1>;
 def HEXAGON_M2_mpyd_rnd_hh_s1:
   di_MInst_sisi_rnd_hh_s1         <"mpy",     int_hexagon_M2_mpyd_rnd_hh_s1>;
 def HEXAGON_M2_mpyd_rnd_hh_s0:

 def HEXAGON_M2_mpyd_nac_lh_s1:
   di_MInst_disisi_nac_lh_s1       <"mpy",    int_hexagon_M2_mpyd_nac_lh_s1>;
 
 def HEXAGON_M2_mpyd_nac_ll_s0:
   di_MInst_disisi_nac_ll          <"mpy",    int_hexagon_M2_mpyd_nac_ll_s0>;
 def HEXAGON_M2_mpyd_nac_ll_s1:
   di_MInst_disisi_nac_ll_s1       <"mpy",    int_hexagon_M2_mpyd_nac_ll_s1>;
 
-// MTYPE / MPYS / Scalar 16x16 multiply unsigned.
-//Rd=mpyu(Rs.[H|L],Rt.[H|L])[:<<0|:<<1]
-def HEXAGON_M2_mpyu_hh_s0:
-  si_MInst_sisi_hh                <"mpyu",    int_hexagon_M2_mpyu_hh_s0>;
-def HEXAGON_M2_mpyu_hh_s1:
-  si_MInst_sisi_hh_s1             <"mpyu",    int_hexagon_M2_mpyu_hh_s1>;
-def HEXAGON_M2_mpyu_hl_s0:
-  si_MInst_sisi_hl                <"mpyu",    int_hexagon_M2_mpyu_hl_s0>;
-def HEXAGON_M2_mpyu_hl_s1:
-  si_MInst_sisi_hl_s1             <"mpyu",    int_hexagon_M2_mpyu_hl_s1>;
-def HEXAGON_M2_mpyu_lh_s0:
-  si_MInst_sisi_lh                <"mpyu",    int_hexagon_M2_mpyu_lh_s0>;
-def HEXAGON_M2_mpyu_lh_s1:
-  si_MInst_sisi_lh_s1             <"mpyu",    int_hexagon_M2_mpyu_lh_s1>;
-def HEXAGON_M2_mpyu_ll_s0:
-  si_MInst_sisi_ll                <"mpyu",    int_hexagon_M2_mpyu_ll_s0>;
-def HEXAGON_M2_mpyu_ll_s1:
-  si_MInst_sisi_ll_s1             <"mpyu",    int_hexagon_M2_mpyu_ll_s1>;
 
 //Rdd=mpyu(Rs.[H|L],Rt.[H|L])[:<<0|:<<1]
 def HEXAGON_M2_mpyud_hh_s0:
   di_MInst_sisi_hh                <"mpyu",    int_hexagon_M2_mpyud_hh_s0>;
 def HEXAGON_M2_mpyud_hh_s1:
   di_MInst_sisi_hh_s1             <"mpyu",    int_hexagon_M2_mpyud_hh_s1>;
 def HEXAGON_M2_mpyud_hl_s0:
   di_MInst_sisi_hl                <"mpyu",    int_hexagon_M2_mpyud_hl_s0>;

lib/Target/Hexagon/HexagonRegisterInfo.td

let Namespace = "Hexagon" in {
   def LC0 : Rc<1, "lc0">, DwarfRegNum<[68]>;
 
   def SA1 : Rc<2, "sa1">, DwarfRegNum<[69]>;
   def LC1 : Rc<3, "lc1">, DwarfRegNum<[70]>;
 
   def M0 : Rc<6, "m0">, DwarfRegNum<[71]>;
   def M1 : Rc<7, "m1">, DwarfRegNum<[72]>;
 
+  def USR : Rc<8, "usr">, DwarfRegNum<[73]>;
   def PC : Rc<9,  "pc">, DwarfRegNum<[32]>; // is the Dwarf number correct?
   def GP : Rc<11, "gp">, DwarfRegNum<[33]>; // is the Dwarf number correct?
 }
 
 // Register classes.
 //
 // FIXME: the register order should be defined in terms of the preferred
 // allocation order...

 def PredRegs : RegisterClass<"Hexagon", [i1], 32, (add (sequence "P%u", 0, 3))>
 {
   let Size = 32;
 }
 
 def CRRegs : RegisterClass<"Hexagon", [i32], 32,
                            (add (sequence "LC%u", 0, 1),
                                 (sequence "SA%u", 0, 1),
-                                (sequence "M%u", 0, 1), PC, GP)> {
+                                (sequence "M%u", 0, 1), PC, GP, USR)> {
   let Size = 32;
 }

test/CodeGen/Hexagon/intrinsics-mpy.ll

+; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
+
+; Verify that the mpy intrinsics are lowered into the right instructions.
+
+@c = external global i32
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l)
+
+define void @test1(i32 %a1, i32 %b1) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %a1, i32 %b1)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.ll.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h)
+
+define void @test2(i32 %a2, i32 %b2) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.lh.s0(i32 %a2, i32 %b2)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.lh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l)
+
+define void @test3(i32 %a3, i32 %b3) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.hl.s0(i32 %a3, i32 %b3)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.hl.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h)
+
+define void @test4(i32 %a4, i32 %b4) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.hh.s0(i32 %a4, i32 %b4)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.hh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):sat
+
+define void @test5(i32 %a5, i32 %b5) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.ll.s0(i32 %a5, i32 %b5)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.ll.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):sat
+
+define void @test6(i32 %a6, i32 %b6) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.lh.s0(i32 %a6, i32 %b6)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.lh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):sat
+
+define void @test7(i32 %a7, i32 %b7) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.hl.s0(i32 %a7, i32 %b7)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.hl.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):sat
+
+define void @test8(i32 %a8, i32 %b8) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.hh.s0(i32 %a8, i32 %b8)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.hh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):rnd
+
+define void @test9(i32 %a9, i32 %b9) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.ll.s0(i32 %a9, i32 %b9)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.ll.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):rnd
+
+define void @test10(i32 %a10, i32 %b10) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.lh.s0(i32 %a10, i32 %b10)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.lh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):rnd
+
+define void @test11(i32 %a11, i32 %b11) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.hl.s0(i32 %a11, i32 %b11)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.hl.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):rnd
+
+define void @test12(i32 %a12, i32 %b12) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.hh.s0(i32 %a12, i32 %b12)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.hh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):rnd:sat
+
+define void @test13(i32 %a13, i32 %b13) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.ll.s0(i32 %a13, i32 %b13)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.ll.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):rnd:sat
+
+define void @test14(i32 %a14, i32 %b14) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.lh.s0(i32 %a14, i32 %b14)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.lh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):rnd:sat
+
+define void @test15(i32 %a15, i32 %b15) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.hl.s0(i32 %a15, i32 %b15)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.hl.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):rnd:sat
+
+define void @test16(i32 %a16, i32 %b16) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.hh.s0(i32 %a16, i32 %b16)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.hh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l)
+
+define void @test17(i32 %a17, i32 %b17) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.ll.s0(i32 %a17, i32 %b17)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.ll.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h)
+
+define void @test18(i32 %a18, i32 %b18) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.lh.s0(i32 %a18, i32 %b18)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.lh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l)
+
+define void @test19(i32 %a19, i32 %b19) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.hl.s0(i32 %a19, i32 %b19)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.hl.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h)
+
+define void @test20(i32 %a20, i32 %b20) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.hh.s0(i32 %a20, i32 %b20)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.hh.s0(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):<<1
+
+define void @test21(i32 %a21, i32 %b21) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.ll.s1(i32 %a21, i32 %b21)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.ll.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):<<1
+
+define void @test22(i32 %a22, i32 %b22) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.lh.s1(i32 %a22, i32 %b22)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.lh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):<<1
+
+define void @test23(i32 %a23, i32 %b23) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.hl.s1(i32 %a23, i32 %b23)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.hl.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):<<1
+
+define void @test24(i32 %a24, i32 %b24) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.hh.s1(i32 %a24, i32 %b24)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.hh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:sat
+
+define void @test25(i32 %a25, i32 %b25) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.ll.s1(i32 %a25, i32 %b25)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.ll.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:sat
+
+define void @test26(i32 %a26, i32 %b26) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.lh.s1(i32 %a26, i32 %b26)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.lh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:sat
+
+define void @test27(i32 %a27, i32 %b27) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.hl.s1(i32 %a27, i32 %b27)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.hl.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:sat
+
+define void @test28(i32 %a28, i32 %b28) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.hh.s1(i32 %a28, i32 %b28)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.hh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:rnd
+
+define void @test29(i32 %a29, i32 %b29) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.ll.s1(i32 %a29, i32 %b29)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.ll.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:rnd
+
+define void @test30(i32 %a30, i32 %b30) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.lh.s1(i32 %a30, i32 %b30)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.lh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:rnd
+
+define void @test31(i32 %a31, i32 %b31) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.hl.s1(i32 %a31, i32 %b31)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.hl.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:rnd
+
+define void @test32(i32 %a32, i32 %b32) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.rnd.hh.s1(i32 %a32, i32 %b32)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.rnd.hh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:rnd:sat
+
+define void @test33(i32 %a33, i32 %b33) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.ll.s1(i32 %a33, i32 %b33)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.ll.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:rnd:sat
+
+define void @test34(i32 %a34, i32 %b34) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.lh.s1(i32 %a34, i32 %b34)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.lh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):<<1:rnd:sat
+
+define void @test35(i32 %a35, i32 %b35) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.hl.s1(i32 %a35, i32 %b35)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.hl.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpy(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):<<1:rnd:sat
+
+define void @test36(i32 %a36, i32 %b36) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpy.sat.rnd.hh.s1(i32 %a36, i32 %b36)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpy.sat.rnd.hh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.l):<<1
+
+define void @test37(i32 %a37, i32 %b37) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.ll.s1(i32 %a37, i32 %b37)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.ll.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.l{{ *}},{{ *}}r{{[0-9]+}}.h):<<1
+
+define void @test38(i32 %a38, i32 %b38) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.lh.s1(i32 %a38, i32 %b38)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.lh.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.l):<<1
+
+define void @test39(i32 %a39, i32 %b39) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.hl.s1(i32 %a39, i32 %b39)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.hl.s1(i32, i32) #1
+
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}mpyu(r{{[0-9]+}}.h{{ *}},{{ *}}r{{[0-9]+}}.h):<<1
+
+define void @test40(i32 %a40, i32 %b40) #0 {
+entry:
+  %0 = tail call i32 @llvm.hexagon.M2.mpyu.hh.s1(i32 %a40, i32 %b40)
+  store i32 %0, i32* @c, align 4
+  ret void
+}
+
+declare i32 @llvm.hexagon.M2.mpyu.hh.s1(i32, i32) #1
+
+attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }

test/MC/Hexagon/mpy.s

+#XFAIL: *
+#REQUIRES: object-emission
+#This test will be enabled when assembler support has been added.
+
+#RUN: llvm-mc -filetype=obj %s | llvm-objdump -d - | FileCheck %s
+
+# Check encoding bits for half-word multiply instructions.
+
+r7=mpy(r28.l,r20.h):<<1:rnd
+#CHECK: ecbcd427 { r7 = mpy(r28.l, r20.h):<<1:rnd }
+
+r18=mpy(r9.l,r21.h):rnd
+#CHECK: ec29d532 { r18 = mpy(r9.l, r21.h):rnd }
+
+r19=mpyu(r23.l,r20.l)
+#CHECK: ec57d413 { r19 = mpyu(r23.l, r20.l) }
+
+r22=mpyu(r19.l,r30.l):<<1
+#CHECK: ecd3de16 { r22 = mpyu(r19.l, r30.l):<<1 }
+
+r19=mpy(r16.h,r19.h)
+#CHECK: ec10d373 { r19 = mpy(r16.h, r19.h) }
+
+r30=mpy(r0.h,r16.h):<<1
+#CHECK: ec80d07e { r30 = mpy(r0.h, r16.h):<<1 }
+
+lr=mpy(r15.h,r25.l)
+#CHECK: ec0fd95f { r31 = mpy(r15.h, r25.l) }
+
+r29=mpy(r28.h,r15.l):<<1
+#CHECK: ec9ccf5d { r29 = mpy(r28.h, r15.l):<<1 }
+
+r20=mpy(r31.l,r19.h)
+#CHECK: ec1fd334 { r20 = mpy(r31.l, r19.h) }
+
+r24=mpy(r19.l,r15.h):<<1
+#CHECK: ec93cf38 { r24 = mpy(r19.l, r15.h):<<1 }
+
+r30=mpy(r10.l,sp.l)
+#CHECK: ec0add1e { r30 = mpy(r10.l, r29.l) }
+
+r7=mpy(r3.l,r4.l):<<1
+#CHECK: ec83c407 { r7 = mpy(r3.l, r4.l):<<1 }
+
+r30=mpy(r23.h,r2.h):rnd:sat
+#CHECK: ec37c2fe { r30 = mpy(r23.h, r2.h):rnd:sat }
+
+r5=mpy(r28.h,r27.h):<<1:rnd:sat
+#CHECK: ecbcdbe5 { r5 = mpy(r28.h, r27.h):<<1:rnd:sat }
+
+r26=mpy(r21.l,r23.l):rnd
+#CHECK: ec35d71a { r26 = mpy(r21.l, r23.l):rnd }
+
+sp=mpy(r25.h,r12.h):<<1:rnd
+#CHECK: ecb9cc7d { r29 = mpy(r25.h, r12.h):<<1:rnd }
+
+r1=mpy(r27.h,r29.h):rnd
+#CHECK: ec3bdd61 { r1 = mpy(r27.h, r29.h):rnd }
+
+r0=mpy(r2.h,r11.h):<<1:sat
+#CHECK: ec82cbe0 { r0 = mpy(r2.h, r11.h):<<1:sat }
+
+r3=mpy(r20.l,r30.l):rnd:sat
+#CHECK: ec34de83 { r3 = mpy(r20.l, r30.l):rnd:sat }
+
+r4=mpy(r21.h,r5.l):<<1:sat
+#CHECK: ec95c5c4 { r4 = mpy(r21.h, r5.l):<<1:sat }
+
+fp=mpy(r20.l,r12.h):rnd:sat
+#CHECK: ec34ccbe { r30 = mpy(r20.l, r12.h):rnd:sat }
+
+r12=mpy(sp.l,r30.h):<<1:rnd:sat
+#CHECK: ecbddeac { r12 = mpy(r29.l, r30.h):<<1:rnd:sat }
+
+r6=mpy(r10.h,fp.l):rnd:sat
+#CHECK: ec2adec6 { r6 = mpy(r10.h, r30.l):rnd:sat }
+
+r24=mpy(r12.h,r1.h):sat
+#CHECK: ec0cc1f8 { r24 = mpy(r12.h, r1.h):sat }
+
+r29=mpyu(r25.h,sp.l)
+#CHECK: ec59dd5d { r29 = mpyu(r25.h, r29.l) }
+
+r24=mpyu(lr.h,r29.l):<<1
+#CHECK: ecdfdd58 { r24 = mpyu(r31.h, r29.l):<<1 }
+
+r26=mpyu(r21.l,r18.h)
+#CHECK: ec55d23a { r26 = mpyu(r21.l, r18.h) }
+
+r29=mpyu(r4.l,r26.h):<<1
+#CHECK: ecc4da3d { r29 = mpyu(r4.l, r26.h):<<1 }
+
+fp=mpy(r8.l,r0.l):sat
+#CHECK: ec08c09e { r30 = mpy(r8.l, r0.l):sat }
+
+r1=mpy(r26.l,r16.l):<<1:sat
+#CHECK: ec9ad081 { r1 = mpy(r26.l, r16.l):<<1:sat }
+
+r16=mpyu(r26.h,r6.h)
+#CHECK: ec5ac670 { r16 = mpyu(r26.h, r6.h) }
+
+lr=mpyu(r23.h,r13.h):<<1
+#CHECK: ecd7cd7f { r31 = mpyu(r23.h, r13.h):<<1 }
+
+r14=mpy(r2.l,r7.h):sat
+#CHECK: ec02c7ae { r14 = mpy(r2.l, r7.h):sat }
+
+r9=mpy(r1.l,r9.h):<<1:sat
+#CHECK: ec81c9a9 { r9 = mpy(r1.l, r9.h):<<1:sat }
+
+r9=mpy(r30.l,r4.l):<<1:rnd:sat
+#CHECK: ecbec489 { r9 = mpy(r30.l, r4.l):<<1:rnd:sat }
+
+r9=mpy(r15.h,r27.l):<<1:rnd
+#CHECK: ecafdb49 { r9 = mpy(r15.h, r27.l):<<1:rnd }
+
+r16=mpy(r6.h,r16.l):rnd
+#CHECK: ec26d050 { r16 = mpy(r6.h, r16.l):rnd }
+
+r1=mpy(r10.l,r29.l):<<1:rnd
+#CHECK: ecaadd01 { r1 = mpy(r10.l, r29.l):<<1:rnd }
+
+r7=mpy(r4.h,r23.l):sat
+#CHECK: ec04d7c7 { r7 = mpy(r4.h, r23.l):sat }
+
+r17=mpy(r12.h,r26.l):<<1:rnd:sat
+#CHECK: ecacdad1 { r17 = mpy(r12.h, r26.l):<<1:rnd:sat }