commit 67d65bb69d5cad957cbb6d672dc0b4a19c211a42
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 18e75f184bc456659e065bd81df678486e1f3c3d
parent b670a1737bae5c3ecc65042d3a1b10d774ecd252

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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45596 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/PHIElimination.cpp

diff --git a/lib/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp
index 07c4ef3..9276937 100644
--- a/lib/CodeGen/PHIElimination.cpp
+++ b/lib/CodeGen/PHIElimination.cpp
@@ -51,6 +51,8 @@
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addPreserved<LiveVariables>();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }