diff options
| author | Nirav Dave <niravd@google.com> | 2019-03-29 17:26:40 +0000 |
|---|---|---|
| committer | Nirav Dave <niravd@google.com> | 2019-03-29 17:26:40 +0000 |
| commit | 610036c506218dbc70464fc2fb7b86dc4d6f906a (patch) | |
| tree | 78df553ae05ec721b3b4a62ce600bb1771f4c739 /lldb/source/Plugins/ScriptInterpreter/Python/lldb-python.h | |
| parent | 4e00a935587ff90c841edcd41d41e92767f4181a (diff) | |
| download | bcm5719-llvm-610036c506218dbc70464fc2fb7b86dc4d6f906a.tar.gz bcm5719-llvm-610036c506218dbc70464fc2fb7b86dc4d6f906a.zip | |
[DAG] Set up infrastructure to avoid smart constructor-based dangling nodes
Summary:
Various SelectionDAG non-combine operations (e.g. the getNode smart
constructor and legalization) may leave dangling nodes by applying
optimizations without fully pruning unused result values. This results
in nodes that are never added to the worklist and therefore can not be
pruned.
Add a node inserter for the combiner to make sure such nodes have the
chance of being pruned. This allows a number of additional peephole
optimizations.
Reviewers: efriedma, RKSimon, craig.topper, jyknight
Reviewed By: jyknight
Subscribers: msearles, jyknight, sdardis, nemanjai, javed.absar, hiraditya, jrtc27, atanasyan, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D58068
llvm-svn: 357279
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/lldb-python.h')
0 files changed, 0 insertions, 0 deletions
