commit 0c209430b4722f741b0f99bbe8f480e2ba4ffd59
author Bill Wendling <isanbard@gmail.com> Fri Jan 04 20:54:55 2008 +0000
committer Bill Wendling <isanbard@gmail.com> Fri Jan 04 20:54:55 2008 +0000
tree d3bebf55548c56d04f33a1b7ca1981a78604748f
parent 2bd541c5ffec3f2685afac21ceab42b967fef0cc

Don't recalculate the loop info and loop dominators analyses if they're
preserved.

llvm-svn: 45596

llvm/lib/CodeGen/TwoAddressInstructionPass.cpp

diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
index dd71bec..8f0c473 100644
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -69,6 +69,8 @@
 void TwoAddressInstructionPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }