commit ead0d88ad7659dabd66cc3149af97d98256fca84
author Chris Lattner <sabre@nondot.org> Tue Jun 17 06:09:18 2008 +0000
committer Chris Lattner <sabre@nondot.org> Tue Jun 17 06:09:18 2008 +0000
tree a93b1e796f1fbca3cfab1feaa81b3fa261a69702
parent a47c6c37034f4e57bc8187e959da4eadb6e24afa

add a new -enable-value-prop flag for llcbeta, that enables propagation
of value info (sign/zero ext info) from one MBB to another.  This doesn't
handle much right now because of two limitations:

1) only handles zext/sext, not random bit propagation (no assert exists 
   for this)
2) doesn't handle phis.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52383 91177308-0d34-0410-b5e6-96231b3b80d8