Add the 32-bit byte forms and the 64-bit byte/halfword forms of the P-extension packed pair intrinsics to riscv_packed_simd.h using generic shufflevector IR. Extend the existing packed pair shuffle lowering to recognize the mixed even/odd forms and select ppaireo/ppairoe in addition to ppaire/ppairo. Add Clang CodeGen, LLVM CodeGen, and intrinsic header tests for the new forms. |
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