make ComputeTopDownOrdering significantly faster and use less stack space
authorChris Lattner <sabre@nondot.org>
Mon, 18 Jun 2007 21:28:10 +0000 (21:28 +0000)
committerChris Lattner <sabre@nondot.org>
Mon, 18 Jun 2007 21:28:10 +0000 (21:28 +0000)
commite10e6f7a36f6f60d1889465a4df51ac8cdb34365
tree17dd61a1887e286f697c20b13d4102e1a4749fd0
parentf50cd749e1504cea64a432757d49831ab0e23c70
make ComputeTopDownOrdering significantly faster and use less stack space
by making it non-recursive

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37629 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp