From: Dan Gohman <gohman@apple.com>
Date: Mon, 9 May 2011 18:44:09 +0000 (+0000)
Subject: Change a few std::maps to DenseMaps.
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=77a2c4c1e54b7e3c4815b276eb6a2d99a7621460

Change a few std::maps to DenseMaps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131088 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/ScalarEvolution.h b/include/llvm/Analysis/ScalarEvolution.h
index a62f6a80d1a..554524a127a 100644
--- a/include/llvm/Analysis/ScalarEvolution.h
+++ b/include/llvm/Analysis/ScalarEvolution.h
@@ -270,30 +270,30 @@ namespace llvm {
 
     /// BackedgeTakenCounts - Cache the backedge-taken count of the loops for
     /// this function as they are computed.
-    std::map<const Loop*, BackedgeTakenInfo> BackedgeTakenCounts;
+    DenseMap<const Loop*, BackedgeTakenInfo> BackedgeTakenCounts;
 
     /// ConstantEvolutionLoopExitValue - This map contains entries for all of
     /// the PHI instructions that we attempt to compute constant evolutions for.
     /// This allows us to avoid potentially expensive recomputation of these
     /// properties.  An instruction maps to null if we are unable to compute its
     /// exit value.
-    std::map<PHINode*, Constant*> ConstantEvolutionLoopExitValue;
+    DenseMap<PHINode*, Constant*> ConstantEvolutionLoopExitValue;
 
     /// ValuesAtScopes - This map contains entries for all the expressions
     /// that we attempt to compute getSCEVAtScope information for, which can
     /// be expensive in extreme cases.
-    std::map<const SCEV *,
+    DenseMap<const SCEV *,
              std::map<const Loop *, const SCEV *> > ValuesAtScopes;
 
     /// LoopDispositions - Memoized computeLoopDisposition results.
-    std::map<const SCEV *,
+    DenseMap<const SCEV *,
              std::map<const Loop *, LoopDisposition> > LoopDispositions;
 
     /// computeLoopDisposition - Compute a LoopDisposition value.
     LoopDisposition computeLoopDisposition(const SCEV *S, const Loop *L);
 
     /// BlockDispositions - Memoized computeBlockDisposition results.
-    std::map<const SCEV *,
+    DenseMap<const SCEV *,
              std::map<const BasicBlock *, BlockDisposition> > BlockDispositions;
 
     /// computeBlockDisposition - Compute a BlockDisposition value.
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index bab4619894c..eef41554f4f 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -3783,7 +3783,7 @@ ScalarEvolution::getBackedgeTakenInfo(const Loop *L) {
   // update the value. The temporary CouldNotCompute value tells SCEV
   // code elsewhere that it shouldn't attempt to request a new
   // backedge-taken count, which could result in infinite recursion.
-  std::pair<std::map<const Loop *, BackedgeTakenInfo>::iterator, bool> Pair =
+  std::pair<DenseMap<const Loop *, BackedgeTakenInfo>::iterator, bool> Pair =
     BackedgeTakenCounts.insert(std::make_pair(L, getCouldNotCompute()));
   if (!Pair.second)
     return Pair.first->second;
@@ -4433,7 +4433,7 @@ Constant *
 ScalarEvolution::getConstantEvolutionLoopExitValue(PHINode *PN,
                                                    const APInt &BEs,
                                                    const Loop *L) {
-  std::map<PHINode*, Constant*>::const_iterator I =
+  DenseMap<PHINode*, Constant*>::const_iterator I =
     ConstantEvolutionLoopExitValue.find(PN);
   if (I != ConstantEvolutionLoopExitValue.end())
     return I->second;