commit f4dd8c445c6680bc82f7fd42bf268b64cc04012d
author Chris Lattner <sabre@nondot.org> Sun Aug 07 04:27:41 2005 +0000
committer Chris Lattner <sabre@nondot.org> Sun Aug 07 04:27:41 2005 +0000
tree 719896138c5f4b1d041a3ca8e5d946e85c190970
parent d670e5c88a2c9a804a8480b4637a6b27a962d842

* Use the new PHINode::hasConstantValue method to simplify some code
* Teach this code to move allocas out of the loop when tail call eliminating
  a call marked 'tail'.  This implements TailCallElim/move_alloca_for_tail_call.ll
* Do not perform this transformation if a call is marked 'tail' and if there
  are allocas that we cannot move out of the loop in #2.  Doing so would increase
  the stack usage of the function.  This implements fixes
  PR615 and TailCallElim/dont-tce-tail-marked-call.ll.

llvm-svn: 22690