[llvm] [RISCV] Intrinsic Support for XCVsimd (PR #118557)

[Craig Topper via llvm-commits]

================
@@ -864,3 +864,230 @@ let Predicates = [HasVendorXCVmac] in {
   def : PatCoreVMacGprGprGprUimm5<"macsRN", "MACSRN">;
   def : PatCoreVMacGprGprGprUimm5<"machhsRN", "MACHHSRN">;
 }
+
+//===----------------------------------------------------------------------===//
+// Patterns for SIMD operations
+//===----------------------------------------------------------------------===//
+
+def cv_tsimm6 : Operand<XLenVT>, TImmLeaf<XLenVT, [{return isInt<6>(Imm);}]> {
+  let ParserMatchClass = SImmAsmOperand<6>;
+  let EncoderMethod = "getImmOpValue";
+  let DecoderMethod = "decodeSImmOperand<6>";
+  let OperandType = "OPERAND_SIMM6";
+  let MCOperandPredicate = [{
+    int64_t Imm;
+    return MCOp.evaluateAsConstantImm(Imm) && isUInt<6>(Imm);
+  }];
+  let OperandNamespace = "RISCVOp";
+}
+
+
+class CVUImmAsmOperand<int width> : AsmOperandClass {
+  let Name = "CVUImm" # width;
+  let RenderMethod = "addImmOperands";
+  let DiagnosticType = !strconcat("Invalid", Name);
+}
+
+def cv_uimm6 : Operand<XLenVT>, ImmLeaf<XLenVT, [{return isUInt<6>(Imm);}]> {
+  let ParserMatchClass = UImmAsmOperand<6>;
+  let EncoderMethod = "getImmOpValue";
+  let DecoderMethod = "decodeUImmOperand<6>";
+  let OperandType = "OPERAND_UIMM6";
+  let MCOperandPredicate = [{
+    int64_t Imm;
+    return MCOp.evaluateAsConstantImm(Imm) && isUInt<6>(Imm);
+  }];
+  let OperandNamespace = "RISCVOp";
+}
+
+def cv_imm8: Operand<XLenVT>, TImmLeaf<XLenVT, [{return isUInt<8>(Imm);}]>;
+
+class PatCorevGprGpr <string intr, string asm> :
----------------
topperc wrote:

Previous class names used `CoreV` instead of `Corev` right?

https://github.com/llvm/llvm-project/pull/118557