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/LowerSubregs.cpp

diff --git a/lib/CodeGen/LowerSubregs.cpp b/lib/CodeGen/LowerSubregs.cpp
index 5430d4f..00038d5 100644
--- a/lib/CodeGen/LowerSubregs.cpp
+++ b/lib/CodeGen/LowerSubregs.cpp
@@ -31,7 +31,8 @@
     }
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesAll();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }