From: Dan Gohman <gohman@apple.com>
Date: Fri, 31 Jul 2009 23:36:22 +0000 (+0000)
Subject: SelectionDAGISel does not "preserve all", since it makes lots of changes
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=a3477fe06df794e0eae26ea243f25912c619a6c4;p=oota-llvm.git

SelectionDAGISel does not "preserve all", since it makes lots of changes
to the MachineFunction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77753 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 1072c95acd5..301c5a7262c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -289,9 +289,11 @@ unsigned SelectionDAGISel::MakeReg(MVT VT) {
 
 void SelectionDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<AliasAnalysis>();
+  AU.addPreserved<AliasAnalysis>();
   AU.addRequired<GCModuleInfo>();
+  AU.addPreserved<GCModuleInfo>();
   AU.addRequired<DwarfWriter>();
-  AU.setPreservesAll();
+  AU.addPreserved<DwarfWriter>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }