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Commit Graph

Author	SHA1	Message	Date
Nadav Rotem	3ffafc2d33	Fix a cycle in the DAG. In this code we replace multiple loads with a single load and multiple stores with a single load. We create the wide loads and stores (and their chains) before we remove the scalar loads and stores and fix the DAG chain. We attempted to merge loads with a different chain. When that happened, the assumption that it is safe to RAUW broke and a cycle was introduced. llvm-svn: 165148	2012-10-03 19:30:31 +00:00

Author

SHA1

Message

Date

Nadav Rotem

3ffafc2d33

Fix a cycle in the DAG. In this code we replace multiple loads with a single load and

multiple stores with a single load. We create the wide loads and stores (and their chains)
before we remove the scalar loads and stores and fix the DAG chain. We attempted to merge
loads with a different chain. When that happened, the assumption that it is safe to RAUW
broke and a cycle was introduced.

llvm-svn: 165148

2012-10-03 19:30:31 +00:00

1 Commits