Andrew Trick 4dfdf242c1 indvars: Added canExpandBackEdgeTakenCount.
Only create a canonical IV for backedge taken count if it will
actually be used by LinearFunctionTestReplace. And some related
cleanup, preparing to reduce dependence on canonical IVs.
No significant effect on x86 or arm in the test-suite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130799 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03 22:24:10 +00:00
..
2011-05-02 18:41:29 +00:00
2011-04-23 19:53:52 +00:00