[llvm] [RISCV][GISel] Support nxv16p0 for RV32. (PR #101573)

[Craig Topper via llvm-commits]

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@@ -74,7 +74,9 @@ static LegalityPredicate typeIsLegalPtrVec(unsigned TypeIdx,
   LegalityPredicate P = [=, &ST](const LegalityQuery &Query) {
     return ST.hasVInstructions() &&
            (Query.Types[TypeIdx].getElementCount().getKnownMinValue() != 1 ||
-            ST.getELen() == 64);
+            ST.getELen() == 64) &&
+           (Query.Types[TypeIdx].getElementCount().getKnownMinValue() != 16 ||
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topperc wrote:

We only support a 16 element pointer vector when the element size is 32. If the pointer size is 64, then nxv16p0 should not be legal.

https://github.com/llvm/llvm-project/pull/101573