[clang] [llvm] [RISCV][P-ext] Support Packed Multiply High (PR #211223)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions c,cpp,h -- clang/lib/CodeGen/TargetBuiltins/RISCV.cpp clang/lib/Headers/riscv_packed_simd.h cross-project-tests/intrinsic-header-tests/riscv_packed_simd.c llvm/lib/Target/RISCV/RISCVISelLowering.cpp --diff_from_common_commit
``````````

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changing `origin/main` to the base branch/commit you want to compare against.
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 33eaebd17..00eafe6a0 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -12225,10 +12225,10 @@ SDValue RISCVTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
       };
       SDValue Rs1 = Op.getOperand(1);
       SDValue Rs2 = Op.getOperand(2);
-      SDValue Lo = DAG.getNode(Opc, DL, MVT::i32, Extract(Rs1, 0),
-                               Extract(Rs2, 0));
-      SDValue Hi = DAG.getNode(Opc, DL, MVT::i32, Extract(Rs1, 1),
-                               Extract(Rs2, 1));
+      SDValue Lo =
+          DAG.getNode(Opc, DL, MVT::i32, Extract(Rs1, 0), Extract(Rs2, 0));
+      SDValue Hi =
+          DAG.getNode(Opc, DL, MVT::i32, Extract(Rs1, 1), Extract(Rs2, 1));
       return DAG.getNode(ISD::BUILD_VECTOR, DL, VT, Lo, Hi);
     }
 

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https://github.com/llvm/llvm-project/pull/211223