[all-commits] [llvm/llvm-project] e8d67a: [X86] Disable autoupgrade support for avx512.mask....

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e8d67ada2df35ca6c70dbbe8185b0edbb18c1150
      https://github.com/llvm/llvm-project/commit/e8d67ada2df35ca6c70dbbe8185b0edbb18c1150
  Author: Craig Topper <craig.topper at gmail.com>
  Date:   2020-03-24 (Tue, 24 Mar 2020)

  Changed paths:
    M llvm/lib/IR/AutoUpgrade.cpp
    M llvm/test/CodeGen/X86/avx512dq-intrinsics-upgrade.ll
    M llvm/test/CodeGen/X86/avx512dqvl-intrinsics-upgrade.ll

  Log Message:
  -----------
  [X86] Disable autoupgrade support for avx512.mask.broadcasti32x2.* and avx512.mask.broadcastf32x2.*.

These intrinsics take a v4i32/v4f32 input and are supposed to
broadcast elements 0 and 1. Instead the autoupgrade code was
broadcasting elements 0, 1, 2, and 3.

I could fix the autoupgrade, but since its been broken for years
it seemed better just to steer anyone still trying to use it away
completely.