Add additional documentation to the extract-and-trunc dagcombine optimization.
authorNadav Rotem <nadav.rotem@intel.com>
Sun, 5 Feb 2012 11:39:23 +0000 (11:39 +0000)
committerNadav Rotem <nadav.rotem@intel.com>
Sun, 5 Feb 2012 11:39:23 +0000 (11:39 +0000)
commitcc870a8f936bfc478b7d3d39724dd604a9de8f76
treea95b505195f344d430d703c46590434e731ab74b
parentd52d9cd038ea325f81dda1fbfadaa3cddcfeb1a9
Add additional documentation to the extract-and-trunc dagcombine optimization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149823 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp