[all-commits] [llvm/llvm-project] ed428c: [SelectionDAG] Require constant index for INSERT/E...

[Eli Friedman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ed428c429e97592c260ad74a6198c210ce381a61
      https://github.com/llvm/llvm-project/commit/ed428c429e97592c260ad74a6198c210ce381a61
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2020-05-13 (Wed, 13 May 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/ISDOpcodes.h
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

  Log Message:
  -----------
  [SelectionDAG] Require constant index for INSERT/EXTRACT_SUBVECTOR.

It sounds like an interesting idea in theory, but nothing is actually
taking advantage of it, and specifying/implementing the edge cases is
painful. So just forbid it.

Differential Revision: https://reviews.llvm.org/D79814