Implement constant propogation of PHI instructions like this:
authorChris Lattner <sabre@nondot.org>
Tue, 7 May 2002 20:44:59 +0000 (20:44 +0000)
committerChris Lattner <sabre@nondot.org>
Tue, 7 May 2002 20:44:59 +0000 (20:44 +0000)
commit54753e279032efd7d7f9aba12dbbb5b7ba8a20ce
tree245e2294ef7b94ac66e6dbbc0e91241779f74307
parent0651a9d207470bbc2deb33da8a66de3217bdfd56
Implement constant propogation of PHI instructions like this:
  X = phi(0, 0, 0)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2543 91177308-0d34-0410-b5e6-96231b3b80d8
lib/VMCore/ConstantFold.cpp