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

llvm-svn: 56475

6 files changed, 12 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/LiveStackAnalysis.cpp b/llvm/lib/CodeGen/LiveStackAnalysis.cpp
index 2baf699c66c..0670570ddf5 100644
--- a/llvm/lib/CodeGen/LiveStackAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveStackAnalysis.cpp
@@ -25,7 +25,8 @@ char LiveStacks::ID = 0;
 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);
 }
 
diff --git a/llvm/lib/CodeGen/LoopAligner.cpp b/llvm/lib/CodeGen/LoopAligner.cpp
index 906e8882428..6cca8e5badc 100644
--- a/llvm/lib/CodeGen/LoopAligner.cpp
+++ b/llvm/lib/CodeGen/LoopAligner.cpp
@@ -34,7 +34,7 @@ namespace {
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequired<MachineLoopInfo>();
       AU.addPreserved<MachineLoopInfo>();
-      AU.setPreservesAll();
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }
   };
diff --git a/llvm/lib/CodeGen/LowerSubregs.cpp b/llvm/lib/CodeGen/LowerSubregs.cpp
index 5430d4f5d34..00038d5c1c7 100644
--- a/llvm/lib/CodeGen/LowerSubregs.cpp
+++ b/llvm/lib/CodeGen/LowerSubregs.cpp
@@ -31,7 +31,8 @@ namespace {
     }
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesAll();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 
diff --git a/llvm/lib/CodeGen/MachineModuleInfo.cpp b/llvm/lib/CodeGen/MachineModuleInfo.cpp
index 9843ff279a8..a83da0a232a 100644
--- a/llvm/lib/CodeGen/MachineModuleInfo.cpp
+++ b/llvm/lib/CodeGen/MachineModuleInfo.cpp
@@ -14,6 +14,7 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/Passes.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
@@ -2014,7 +2015,8 @@ struct DebugLabelFolder : public MachineFunctionPass {
   DebugLabelFolder() : MachineFunctionPass(&ID) {}
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-    AU.setPreservesAll();
+    AU.addPreservedID(MachineLoopInfoID);
+    AU.addPreservedID(MachineDominatorsID);
     MachineFunctionPass::getAnalysisUsage(AU);
   }
 
diff --git a/llvm/lib/CodeGen/PrologEpilogInserter.cpp b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
index 8efef1beb57..26a6efd21e9 100644
--- a/llvm/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/llvm/lib/CodeGen/PrologEpilogInserter.cpp
@@ -42,7 +42,8 @@ namespace {
     }
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      AU.setPreservesAll();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 
diff --git a/llvm/lib/CodeGen/StackSlotColoring.cpp b/llvm/lib/CodeGen/StackSlotColoring.cpp
index 1b5d41795cc..c02765d042f 100644
--- a/llvm/lib/CodeGen/StackSlotColoring.cpp
+++ b/llvm/lib/CodeGen/StackSlotColoring.cpp
@@ -66,7 +66,8 @@ namespace {
     
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequired<LiveStacks>();
-      AU.setPreservesAll();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }