[PATCH] D123848: [RS4GC] Don't clone BDV if its inputs are not derived

[Dmitry Makogon via Phabricator via llvm-commits]

dmakogon created this revision.
dmakogon added reviewers: mkazantsev, reames, nikic, lebedev.ri, skatkov.
Herald added a subscriber: hiraditya.
Herald added a project: All.
dmakogon requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This patch performs check if all the inputs of the BDV are base values themselves (i.e. not derived from some base)
If it's true for some BDV, we can avoid cloning it, because the clone would be identical to BDV (it may have different incoming values, because those may be cloned too).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123848

Files:
  llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
  llvm/test/Transforms/RewriteStatepointsForGC/base-inference.ll
  llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-10.ll
  llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-14.ll
  llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-9.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D123848.423047.patch
Type: text/x-patch
Size: 16613 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220415/35a08e51/attachment-0001.bin>