Author: void
Date: Fri Jan  4 14:54:55 2008
New Revision: 45596

URL: http://llvm.org/viewvc/llvm-project?rev=45596&view=rev
Log:
Don't recalculate the loop info and loop dominators analyses if they're
preserved.

Modified:
    llvm/trunk/include/llvm/CodeGen/Passes.h
    llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp
    llvm/trunk/lib/CodeGen/MachineDominators.cpp
    llvm/trunk/lib/CodeGen/MachineLoopInfo.cpp
    llvm/trunk/lib/CodeGen/PHIElimination.cpp
    llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
    llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
    llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp

Modified: llvm/trunk/include/llvm/CodeGen/Passes.h
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/Passes.h?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/include/llvm/CodeGen/Passes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/Passes.h Fri Jan  4 14:54:55 2008
@@ -38,6 +38,14 @@
   FunctionPass *createMachineFunctionPrinterPass(std::ostream *OS,
                                                  const std::string &Banner 
="");
 
+  /// MachineLoopInfo pass - This pass is a loop analysis pass.
+  /// 
+  extern const PassInfo *MachineLoopInfoID;
+
+  /// MachineDominators pass - This pass is a machine dominators analysis pass.
+  /// 
+  extern const PassInfo *MachineDominatorsID;
+
   /// PHIElimination pass - This pass eliminates machine instruction PHI nodes
   /// by inserting copy instructions.  This destroys SSA information, but is 
the
   /// desired input for some register allocators.  This pass is "required" by

Modified: llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp (original)
+++ llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp Fri Jan  4 14:54:55 2008
@@ -60,6 +60,8 @@
 void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<LiveVariables>();
   AU.addRequired<LiveVariables>();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   AU.addRequiredID(PHIEliminationID);
   AU.addRequiredID(TwoAddressInstructionPassID);

Modified: llvm/trunk/lib/CodeGen/MachineDominators.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineDominators.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/MachineDominators.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineDominators.cpp Fri Jan  4 14:54:55 2008
@@ -13,12 +13,17 @@
 
//===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/MachineDominators.h"
+#include "llvm/CodeGen/Passes.h"
 
 using namespace llvm;
 
 TEMPLATE_INSTANTIATION(class DomTreeNodeBase<MachineBasicBlock>);
 TEMPLATE_INSTANTIATION(class DominatorTreeBase<MachineBasicBlock>);
 
-char MachineDominatorTree::ID = 0;
-static RegisterPass<MachineDominatorTree>
-E("machinedomtree", "MachineDominator Tree Construction", true);
+namespace {
+  char MachineDominatorTree::ID = 0;
+  RegisterPass<MachineDominatorTree>
+  E("machinedomtree", "MachineDominator Tree Construction", true);
+}
+
+const PassInfo *llvm::MachineDominatorsID = E.getPassInfo();

Modified: llvm/trunk/lib/CodeGen/MachineLoopInfo.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineLoopInfo.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/MachineLoopInfo.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineLoopInfo.cpp Fri Jan  4 14:54:55 2008
@@ -16,15 +16,20 @@
 
 #include "llvm/CodeGen/MachineLoopInfo.h"
 #include "llvm/CodeGen/MachineDominators.h"
+#include "llvm/CodeGen/Passes.h"
 
 using namespace llvm;
 
 TEMPLATE_INSTANTIATION(class LoopBase<MachineBasicBlock>);
 TEMPLATE_INSTANTIATION(class LoopInfoBase<MachineBasicBlock>);
 
-char MachineLoopInfo::ID = 0;
-static RegisterPass<MachineLoopInfo>
-X("machine-loops", "Machine Natural Loop Construction", true);
+namespace {
+  char MachineLoopInfo::ID = 0;
+  RegisterPass<MachineLoopInfo>
+  X("machine-loops", "Machine Natural Loop Construction", true);
+}
+
+const PassInfo *llvm::MachineLoopInfoID = X.getPassInfo();
 
 bool MachineLoopInfo::runOnMachineFunction(MachineFunction &) {
   releaseMemory();

Modified: llvm/trunk/lib/CodeGen/PHIElimination.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/PHIElimination.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/PHIElimination.cpp (original)
+++ llvm/trunk/lib/CodeGen/PHIElimination.cpp Fri Jan  4 14:54:55 2008
@@ -51,6 +51,8 @@
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addPreserved<LiveVariables>();
+      AU.addPreservedID(MachineLoopInfoID);
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 

Modified: llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp Fri Jan  4 14:54:55 2008
@@ -104,6 +104,8 @@
       // to coalescing and which analyses coalescing invalidates.
       AU.addRequiredTransitive<RegisterCoalescer>();
       AU.addRequired<MachineLoopInfo>();
+      AU.addPreserved<MachineLoopInfo>();
+      AU.addPreservedID(MachineDominatorsID);
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 

Modified: llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp (original)
+++ llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp Fri Jan  4 14:54:55 2008
@@ -67,6 +67,8 @@
 
 void SimpleRegisterCoalescing::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<LiveIntervals>();
+  AU.addPreserved<MachineLoopInfo>();
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   AU.addPreservedID(TwoAddressInstructionPassID);
   AU.addRequired<LiveVariables>();

Modified: llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp?rev=45596&r1=45595&r2=45596&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp (original)
+++ llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp Fri Jan  4 14:54:55 
2008
@@ -69,6 +69,8 @@
 void TwoAddressInstructionPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }


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