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 1072c95acd5b6980b64716516a5cb8b8a3c2a02f..301c5a7262cb1c8cf9f68ced5ff77164a4f19011 100644 (file)
--- 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);
 }