[clang] [llvm] [RISCV][P-ext] Support Packed Narrowing Clip Pair (PR #215779)

[Craig Topper via llvm-commits]

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@@ -12302,6 +12302,54 @@ SDValue RISCVTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
     return DAG.getNode(Opc, DL, Op.getValueType(), Op.getOperand(1),
                        Op.getOperand(2));
   }
+  case Intrinsic::riscv_pnclipp:
+  case Intrinsic::riscv_pnclipup: {
+    bool IsSigned = IntNo == Intrinsic::riscv_pnclipp;
+    EVT VT = Op.getValueType();
+    SDValue Rs1 = Op.getOperand(1);
+    SDValue Rs2 = Op.getOperand(2);
+    unsigned Opc = IsSigned ? RISCVISD::PNCLIPP : RISCVISD::PNCLIPUP;
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topperc wrote:

This variable is only used in 1 place now.

https://github.com/llvm/llvm-project/pull/215779