+def SDTHexagonI64I32I32 : SDTypeProfile<1, 2,
+ [SDTCisVT<0, i64>, SDTCisVT<1, i32>, SDTCisSameAs<1, 2>]>;
+
+def HexagonWrapperCombineII :
+ SDNode<"HexagonISD::WrapperCombineII", SDTHexagonI64I32I32>;
+def HexagonWrapperCombineRR :
+ SDNode<"HexagonISD::WrapperCombineRR", SDTHexagonI64I32I32>;
+
+// Combines the two integer registers SRC1 and SRC2 into a double register.
+let isPredicable = 1 in
+def COMBINE_rr : ALU32_rr<(outs DoubleRegs:$dst), (ins IntRegs:$src1,
+ IntRegs:$src2),
+ "$dst = combine($src1, $src2)",
+ [(set (i64 DoubleRegs:$dst),
+ (i64 (HexagonWrapperCombineRR (i32 IntRegs:$src1),
+ (i32 IntRegs:$src2))))]>;
+
+// Rd=combine(Rt.[HL], Rs.[HL])
+class COMBINE_halves<string A, string B>: ALU32_rr<(outs IntRegs:$dst),
+ (ins IntRegs:$src1,
+ IntRegs:$src2),
+ "$dst = combine($src1."# A #", $src2."# B #")", []>;
+
+let isPredicable = 1 in {
+ def COMBINE_hh : COMBINE_halves<"H", "H">;
+ def COMBINE_hl : COMBINE_halves<"H", "L">;
+ def COMBINE_lh : COMBINE_halves<"L", "H">;
+ def COMBINE_ll : COMBINE_halves<"L", "L">;
+}
+
+def : Pat<(i32 (trunc (i64 (srl (i64 DoubleRegs:$a), (i32 16))))),
+ (COMBINE_lh (EXTRACT_SUBREG (i64 DoubleRegs:$a), subreg_hireg),
+ (EXTRACT_SUBREG (i64 DoubleRegs:$a), subreg_loreg))>;
+
+// Combines the two immediates SRC1 and SRC2 into a double register.
+class COMBINE_imm<Operand imm1, Operand imm2, PatLeaf pat1, PatLeaf pat2> :
+ ALU32_ii<(outs DoubleRegs:$dst), (ins imm1:$src1, imm2:$src2),
+ "$dst = combine(#$src1, #$src2)",
+ [(set (i64 DoubleRegs:$dst),
+ (i64 (HexagonWrapperCombineII (i32 pat1:$src1), (i32 pat2:$src2))))]>;
+
+let isExtendable = 1, opExtendable = 1, isExtentSigned = 1, opExtentBits = 8 in
+def COMBINE_Ii : COMBINE_imm<s8Ext, s8Imm, s8ExtPred, s8ImmPred>;