[all-commits] [llvm/llvm-project] cd8748: Temporarily Revert "[SLP] allow forming 2-way redu...

[Eric Christopher via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: cd8748a15f2d18861b3548eb26ed2b52e5ee50b4
      https://github.com/llvm/llvm-project/commit/cd8748a15f2d18861b3548eb26ed2b52e5ee50b4
  Author: Eric Christopher <echristo at gmail.com>
  Date:   2019-11-20 (Wed, 20 Nov 2019)

  Changed paths:
    M llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Feature/weak_constant.ll
    M llvm/test/Transforms/SLPVectorizer/X86/reduction2.ll

  Log Message:
  -----------
  Temporarily Revert "[SLP] allow forming 2-way reduction patterns"

After speaking with Sanjay - seeing a number of miscompiles and working
on tracking down a testcase. None of the follow on patches seem to
have helped so far.

This reverts commit 7ff57705ba196ce649d6034614b3b9df57e1f84f.