Further cleanup. Moved definitions for SymbolManager and ValueManager into
their own [.cpp;.h] files.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47201 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Analysis/ValueManager.cpp b/Analysis/ValueManager.cpp
new file mode 100644
index 0000000..61a2154
--- /dev/null
+++ b/Analysis/ValueManager.cpp
@@ -0,0 +1,134 @@
+// ValueManager.h - Low-level value management for Value Tracking -*- C++ -*--==
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This files defines ValueManager, a class that manages the lifetime of APSInt
+// objects and symbolic constraints used by GRExprEngine and related classes.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Analysis/PathSensitive/ValueManager.h"
+
+using namespace clang;
+
+ValueManager::~ValueManager() {
+ // Note that the dstor for the contents of APSIntSet will never be called,
+ // so we iterate over the set and invoke the dstor for each APSInt. This
+ // frees an aux. memory allocated to represent very large constants.
+ for (APSIntSetTy::iterator I=APSIntSet.begin(), E=APSIntSet.end(); I!=E; ++I)
+ I->getValue().~APSInt();
+}
+
+const llvm::APSInt& ValueManager::getValue(const llvm::APSInt& X) {
+ llvm::FoldingSetNodeID ID;
+ void* InsertPos;
+ typedef llvm::FoldingSetNodeWrapper<llvm::APSInt> FoldNodeTy;
+
+ X.Profile(ID);
+ FoldNodeTy* P = APSIntSet.FindNodeOrInsertPos(ID, InsertPos);
+
+ if (!P) {
+ P = (FoldNodeTy*) BPAlloc.Allocate<FoldNodeTy>();
+ new (P) FoldNodeTy(X);
+ APSIntSet.InsertNode(P, InsertPos);
+ }
+
+ return *P;
+}
+
+const llvm::APSInt& ValueManager::getValue(uint64_t X, unsigned BitWidth,
+ bool isUnsigned) {
+ llvm::APSInt V(BitWidth, isUnsigned);
+ V = X;
+ return getValue(V);
+}
+
+const llvm::APSInt& ValueManager::getValue(uint64_t X, QualType T,
+ SourceLocation Loc) {
+
+ unsigned bits = Ctx.getTypeSize(T, Loc);
+ llvm::APSInt V(bits, T->isUnsignedIntegerType());
+ V = X;
+ return getValue(V);
+}
+
+const SymIntConstraint&
+ValueManager::getConstraint(SymbolID sym, BinaryOperator::Opcode Op,
+ const llvm::APSInt& V) {
+
+ llvm::FoldingSetNodeID ID;
+ SymIntConstraint::Profile(ID, sym, Op, V);
+ void* InsertPos;
+
+ SymIntConstraint* C = SymIntCSet.FindNodeOrInsertPos(ID, InsertPos);
+
+ if (!C) {
+ C = (SymIntConstraint*) BPAlloc.Allocate<SymIntConstraint>();
+ new (C) SymIntConstraint(sym, Op, V);
+ SymIntCSet.InsertNode(C, InsertPos);
+ }
+
+ return *C;
+}
+
+const llvm::APSInt&
+ValueManager::EvaluateAPSInt(BinaryOperator::Opcode Op,
+ const llvm::APSInt& V1, const llvm::APSInt& V2) {
+
+ switch (Op) {
+ default:
+ assert (false && "Invalid Opcode.");
+
+ case BinaryOperator::Mul:
+ return getValue( V1 * V2 );
+
+ case BinaryOperator::Div:
+ return getValue( V1 / V2 );
+
+ case BinaryOperator::Rem:
+ return getValue( V1 % V2 );
+
+ case BinaryOperator::Add:
+ return getValue( V1 + V2 );
+
+ case BinaryOperator::Sub:
+ return getValue( V1 - V2 );
+
+ case BinaryOperator::Shl:
+ return getValue( V1.operator<<( (unsigned) V2.getZExtValue() ));
+
+ case BinaryOperator::Shr:
+ return getValue( V1.operator>>( (unsigned) V2.getZExtValue() ));
+
+ case BinaryOperator::LT:
+ return getTruthValue( V1 < V2 );
+
+ case BinaryOperator::GT:
+ return getTruthValue( V1 > V2 );
+
+ case BinaryOperator::LE:
+ return getTruthValue( V1 <= V2 );
+
+ case BinaryOperator::GE:
+ return getTruthValue( V1 >= V2 );
+
+ case BinaryOperator::EQ:
+ return getTruthValue( V1 == V2 );
+
+ case BinaryOperator::NE:
+ return getTruthValue( V1 != V2 );
+
+ // Note: LAnd, LOr, Comma are handled specially by higher-level logic.
+
+ case BinaryOperator::And:
+ return getValue( V1 & V2 );
+
+ case BinaryOperator::Or:
+ return getValue( V1 | V2 );
+ }
+}