[all-commits] [llvm/llvm-project] 036790: [DAGCombiner] Allow zextended load combines.

[Clement Courbet via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 036790f988999cf9f7ac8a37c5cb43efa9bb0455
      https://github.com/llvm/llvm-project/commit/036790f988999cf9f7ac8a37c5cb43efa9bb0455
  Author: Clement Courbet <courbet at google.com>
  Date:   2019-11-22 (Fri, 22 Nov 2019)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/load-combine-big-endian.ll
    M llvm/test/CodeGen/AArch64/load-combine.ll
    M llvm/test/CodeGen/ARM/load-combine-big-endian.ll
    M llvm/test/CodeGen/ARM/load-combine.ll
    M llvm/test/CodeGen/X86/load-combine.ll

  Log Message:
  -----------
  [DAGCombiner] Allow zextended load combines.

Summary: or(zext(load8(base)), zext(load8(base+1)) -> zext(load16 base)

Reviewers: apilipenko, RKSimon

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70487