commit 8b56a90bec639665fc024896d2fc2bdd095c76a3
author Evan Cheng <evan.cheng@apple.com> Mon Sep 22 22:21:38 2008 +0000
committer Evan Cheng <evan.cheng@apple.com> Mon Sep 22 22:21:38 2008 +0000
tree 781ba506e5a3f0c1b14a4e3ae12c3510d6f49428
parent bc09afa80ec06d564fda3995dac1a2da7136b33d

Instead of setPreservesAll, just mark them preseving machine loop info and machine dominators.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56475 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LiveStackAnalysis.cpp

diff --git a/lib/CodeGen/LiveStackAnalysis.cpp b/lib/CodeGen/LiveStackAnalysis.cpp
index 2baf699..0670570 100644
--- a/lib/CodeGen/LiveStackAnalysis.cpp
+++ b/lib/CodeGen/LiveStackAnalysis.cpp
@@ -25,7 +25,8 @@
 static RegisterPass<LiveStacks> X("livestacks", "Live Stack Slot Analysis");
 
 void LiveStacks::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }