[all-commits] [llvm/llvm-project] 3945b6: [SVE][CodeGen] Replace more TypeSize comparison op...

[david-arm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3945b69e815b3312125a0461b8b6ba53349ab3ed
      https://github.com/llvm/llvm-project/commit/3945b69e815b3312125a0461b8b6ba53349ab3ed
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2020-10-19 (Mon, 19 Oct 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

  Log Message:
  -----------
  [SVE][CodeGen] Replace more TypeSize comparison operators with their scalar equivalents

In certain places in llvm/lib/CodeGen we were relying upon the TypeSize
comparison operators when in fact the code was only ever expecting
either scalar values or fixed width vectors. This patch changes a few
functions that were always expecting to work on scalar or fixed width
types:

1. DAGCombiner::mergeTruncStores - deals with scalar integers only.
2. DAGCombiner::ReduceLoadWidth - not valid for vectors.
3. DAGCombiner::createBuildVecShuffle - should only be used for
   fixed width vectors.
4. SelectionDAGLegalize::ExpandFCOPYSIGN and
   SelectionDAGLegalize::getSignAsIntValue - only work on scalars.

Differential Revision: https://reviews.llvm.org/D88562