Change preserve all claim to just preserve live variables and phielimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10469 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 285085801bee3a56cc9fe59412c67d7521175764..2bd9fabb81e0a62e90d9d5f78bfc14371ea4b828 100644 (file)
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -45,8 +45,9 @@ namespace {
 
 void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const
 {
-    AU.setPreservesAll();
+    AU.addPreserved<LiveVariables>();
     AU.addRequired<LiveVariables>();
+    AU.addPreservedID(PHIEliminationID);
     AU.addRequiredID(PHIEliminationID);
     MachineFunctionPass::getAnalysisUsage(AU);
 }