Bruno Cardoso Lopes e97190fdf8 Add a DAGCombine for subvector extracts to remove useless chains of
subvector inserts and extracts. Initial patch by Rackover, Zvi with
some tweak done by me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-20 23:19:33 +00:00
..
2011-09-16 00:35:06 +00:00
2011-09-20 22:28:17 +00:00
2011-09-20 00:38:04 +00:00