[clang] [llvm] [RISCV] Update Zvzip support to v0.2 (PR #210603)

[Boyao Wang via cfe-commits]

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@@ -6798,6 +6781,9 @@ SDValue RISCVTargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
       }
 
       if (UsesBothSources &&
+          isLegalVTForZvzipInterleavedOperand(
+              V1.getSimpleValueType().getDoubleNumVectorElementsVT(),
+              Subtarget) &&
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BoyaoWang430 wrote:

This checks the doubled type, but the calls below lower the original V1/V2. Please validate the actual operand type; otherwise <4 x i32> on Zve32x produces an illegal result.

https://github.com/llvm/llvm-project/pull/210603