From: David Blaikie <dblaikie@gmail.com>
Date: Thu, 13 Nov 2014 21:40:02 +0000 (+0000)
Subject: Use unique_ptr to handle ownership of TreePatterns in CodeGenDAGPatterns::PatternFrag... 
X-Git-Tag: android-x86-7.1-r4~55521
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=bea87dad5ec18ebed606c857d5ed979dcd284491;p=android-x86%2Fexternal-llvm.git

Use unique_ptr to handle ownership of TreePatterns in CodeGenDAGPatterns::PatternFragments

We might be able to use unique_ptr to handle ownership of the
TreePatternNodes too - looking into that next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221928 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index cbb2e05dd9d..63f6283cffb 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -2263,13 +2263,6 @@ CodeGenDAGPatterns::CodeGenDAGPatterns(RecordKeeper &R) :
   VerifyInstructionFlags();
 }
 
-CodeGenDAGPatterns::~CodeGenDAGPatterns() {
-  for (pf_iterator I = PatternFragments.begin(),
-       E = PatternFragments.end(); I != E; ++I)
-    delete I->second;
-}
-
-
 Record *CodeGenDAGPatterns::getSDNodeNamed(const std::string &Name) const {
   Record *N = Records.getDef(Name);
   if (!N || !N->isSubClassOf("SDNode")) {
@@ -2331,9 +2324,9 @@ void CodeGenDAGPatterns::ParsePatternFragments(bool OutFrags) {
 
     DagInit *Tree = Fragments[i]->getValueAsDag("Fragment");
     TreePattern *P =
-      new TreePattern(Fragments[i], Tree,
-                      !Fragments[i]->isSubClassOf("OutPatFrag"), *this);
-    PatternFragments[Fragments[i]] = P;
+        (PatternFragments[Fragments[i]] = llvm::make_unique<TreePattern>(
+             Fragments[i], Tree, !Fragments[i]->isSubClassOf("OutPatFrag"),
+             *this)).get();
 
     // Validate the argument list, converting it to set, to discard duplicates.
     std::vector<std::string> &Args = P->getArgList();
@@ -2391,16 +2384,16 @@ void CodeGenDAGPatterns::ParsePatternFragments(bool OutFrags) {
     if (OutFrags != Fragments[i]->isSubClassOf("OutPatFrag"))
       continue;
 
-    TreePattern *ThePat = PatternFragments[Fragments[i]];
-    ThePat->InlinePatternFragments();
+    TreePattern &ThePat = *PatternFragments[Fragments[i]];
+    ThePat.InlinePatternFragments();
 
     // Infer as many types as possible.  Don't worry about it if we don't infer
     // all of them, some may depend on the inputs of the pattern.
-    ThePat->InferAllTypes();
-    ThePat->resetError();
+    ThePat.InferAllTypes();
+    ThePat.resetError();
 
     // If debugging, print out the pattern fragment result.
-    DEBUG(ThePat->dump());
+    DEBUG(ThePat.dump());
   }
 }
 
diff --git a/utils/TableGen/CodeGenDAGPatterns.h b/utils/TableGen/CodeGenDAGPatterns.h
index 1a4eaec6ac0..12ff9968d1b 100644
--- a/utils/TableGen/CodeGenDAGPatterns.h
+++ b/utils/TableGen/CodeGenDAGPatterns.h
@@ -702,7 +702,8 @@ class CodeGenDAGPatterns {
   std::map<Record*, SDNodeInfo, LessRecordByID> SDNodes;
   std::map<Record*, std::pair<Record*, std::string>, LessRecordByID> SDNodeXForms;
   std::map<Record*, ComplexPattern, LessRecordByID> ComplexPatterns;
-  std::map<Record*, TreePattern*, LessRecordByID> PatternFragments;
+  std::map<Record *, std::unique_ptr<TreePattern>, LessRecordByID>
+      PatternFragments;
   std::map<Record*, DAGDefaultOperand, LessRecordByID> DefaultOperands;
   std::map<Record*, DAGInstruction, LessRecordByID> Instructions;
 
@@ -716,7 +717,6 @@ class CodeGenDAGPatterns {
   std::vector<PatternToMatch> PatternsToMatch;
 public:
   CodeGenDAGPatterns(RecordKeeper &R);
-  ~CodeGenDAGPatterns();
 
   CodeGenTarget &getTargetInfo() { return Target; }
   const CodeGenTarget &getTargetInfo() const { return Target; }
@@ -778,15 +778,15 @@ public:
   // Pattern Fragment information.
   TreePattern *getPatternFragment(Record *R) const {
     assert(PatternFragments.count(R) && "Invalid pattern fragment request!");
-    return PatternFragments.find(R)->second;
+    return PatternFragments.find(R)->second.get();
   }
   TreePattern *getPatternFragmentIfRead(Record *R) const {
-    if (!PatternFragments.count(R)) return nullptr;
-    return PatternFragments.find(R)->second;
+    if (!PatternFragments.count(R))
+      return nullptr;
+    return PatternFragments.find(R)->second.get();
   }
 
-  typedef std::map<Record*, TreePattern*, LessRecordByID>::const_iterator
-          pf_iterator;
+  typedef decltype(PatternFragments)::const_iterator pf_iterator;
   pf_iterator pf_begin() const { return PatternFragments.begin(); }
   pf_iterator pf_end() const { return PatternFragments.end(); }
 
diff --git a/utils/TableGen/DAGISelMatcherEmitter.cpp b/utils/TableGen/DAGISelMatcherEmitter.cpp
index 00595703839..302f27bd0ec 100644
--- a/utils/TableGen/DAGISelMatcherEmitter.cpp
+++ b/utils/TableGen/DAGISelMatcherEmitter.cpp
@@ -630,7 +630,7 @@ void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
 
   for (CodeGenDAGPatterns::pf_iterator I = CGP.pf_begin(), E = CGP.pf_end();
        I != E; ++I)
-    PFsByName[I->first->getName()] = I->second;
+    PFsByName[I->first->getName()] = I->second.get();
 
   if (!NodePredicates.empty()) {
     OS << "bool CheckNodePredicate(SDNode *Node,\n";