[clang] [llvm] [RISCV][P-ext] Add packed multiply-parts intrinsics (PR #218875)

[Craig Topper via cfe-commits]

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@@ -318,6 +318,49 @@ def pmulq_i16x4  : RISCVBuiltin<"_Vector<4, short>(_Vector<4, short>, _Vector<4,
 def pmulqr_i16x4 : RISCVBuiltin<"_Vector<4, short>(_Vector<4, short>, _Vector<4, short>)">;
 def pmulq_i32x2  : RISCVBuiltin<"_Vector<2, int>(_Vector<2, int>, _Vector<2, int>)">;
 def pmulqr_i32x2 : RISCVBuiltin<"_Vector<2, int>(_Vector<2, int>, _Vector<2, int>)">;
+// Packed Multiply Parts (32-bit)
----------------
topperc wrote:

```suggestion

// Packed Multiply Parts (32-bit)
```

https://github.com/llvm/llvm-project/pull/218875