[all-commits] [llvm/llvm-project] af812f: [Clang][RISCV][P-ext] Support packed widening conv...

[陈子昂 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: af812fc18a8ab488bf8b70f9b8ae19bbdd1aea48
      https://github.com/llvm/llvm-project/commit/af812fc18a8ab488bf8b70f9b8ae19bbdd1aea48
  Author: 陈子昂 <2802328816 at qq.com>
  Date:   2026-07-12 (Sun, 12 Jul 2026)

  Changed paths:
    M clang/lib/Headers/riscv_packed_simd.h
    M clang/test/CodeGen/RISCV/rvp-intrinsics.c
    M cross-project-tests/intrinsic-header-tests/riscv_packed_simd.c
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    A llvm/test/CodeGen/RISCV/rvp-widening-convert.ll

  Log Message:
  -----------
  [Clang][RISCV][P-ext] Support packed widening convert intrinsics (#208394)

This patch implements all packed widening convert intrinsics using
general vector operations. Low widening conversions use
`__builtin_convertvector`, while high-half conversions use general
shuffles.

The generated code for high-half conversions is correct but not yet
optimal.



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