[PATCH] D117592: [ARM][AArch64] Introduce qrdmlah and qrdmlsh intrinsics

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: DavidSpickett, labrinea, t.p.northover, samtebbs.
Herald added subscribers: hiraditya, kristof.beyls.
dmgreen requested review of this revision.
Herald added a project: LLVM.

Since it's introduction, the qrdmlah has been represented as a qrdmilh and a sadd_sat. This doesn't produce the same result for all input values though. This patch fixes that by introducing a qrdmlah (and qrdmlsh) intrinsic specifically for the vqrdmlah and sqrdmlah instructions. The old test cases will now produce a qrdmulh and sqadd, as expected.


https://reviews.llvm.org/D117592

Files:
  clang/include/clang/Basic/arm_neon.td
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/test/CodeGen/aarch64-v8.1a-neon-intrinsics.c
  clang/test/CodeGen/arm-v8.1a-neon-intrinsics.c
  llvm/include/llvm/IR/IntrinsicsAArch64.td
  llvm/include/llvm/IR/IntrinsicsARM.td
  llvm/lib/Target/AArch64/AArch64InstrFormats.td
  llvm/lib/Target/AArch64/AArch64InstrInfo.td
  llvm/lib/Target/ARM/ARMInstrNEON.td
  llvm/test/CodeGen/AArch64/arm64-neon-v8.1a.ll
  llvm/test/CodeGen/ARM/neon-v8.1a.ll

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