[CodeGenPrepare] Create more extloads and fewer ands
Summary:
Add and instructions immediately after loads that only have their low
bits used, assuming that the (and (load x) c) will be matched as a
extload and the ands/truncs fed by the extload will be removed by isel.
Reviewers: mcrosier, qcolombet, ab
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14584
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253722 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed