[all-commits] [llvm/llvm-project] 6d2df1: [VectorComine] Restrict single-element-store index...

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6d2df181638a34f5d4ebc0c92cfb6a30abf8588d
      https://github.com/llvm/llvm-project/commit/6d2df181638a34f5d4ebc0c92cfb6a30abf8588d
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2021-05-12 (Wed, 12 May 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VectorCombine.cpp
    M llvm/test/Transforms/VectorCombine/load-insert-store.ll

  Log Message:
  -----------
  [VectorComine] Restrict single-element-store index to inbounds constant

Vector single element update optimization is landed in 2db4979. But the
scope needs restriction. This patch restricts the index to inbounds and
vector must be fixed sized. In future, we may use value tracking to
relax constant restrictions.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D102146