[all-commits] [llvm/llvm-project] ef64ba: [InstCombine] GEPOperator::accumulateConstantOffse...

[sdesmalen-arm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ef64ba831194c7deac8882a325ea9bea64eb612a
      https://github.com/llvm/llvm-project/commit/ef64ba831194c7deac8882a325ea9bea64eb612a
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2020-03-18 (Wed, 18 Mar 2020)

  Changed paths:
    M llvm/lib/IR/Operator.cpp
    M llvm/test/Transforms/InstCombine/gep-vector.ll

  Log Message:
  -----------
  [InstCombine] GEPOperator::accumulateConstantOffset does not support scalable vectors

Avoid transforming:

 %0 = bitcast i8* %base to <vscale x 16 x i8>*
 %1 = getelementptr <vscale x 16 x i8>, <vscale x 16 x i8>* %0, i64 1

into:

 %0 = getelementptr i8, i8* %base, i64 16
 %1 = bitcast i8* %0 to <vscale x 16 x i8>*

Reviewers: efriedma, ctetreau

Reviewed By: efriedma

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76236