Make a major restructuring of the clang tree: introduce a top-level

lib dir and move all the libraries into it.  This follows the main
llvm tree, and allows the libraries to be built in parallel.  The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in.  This speeds
up parallel builds, particularly incremental ones.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48402 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/Analysis/GRBlockCounter.cpp b/lib/Analysis/GRBlockCounter.cpp
new file mode 100644
index 0000000000..3ecc39d322
--- /dev/null
+++ b/lib/Analysis/GRBlockCounter.cpp
@@ -0,0 +1,54 @@
+//==- GRBlockCounter.h - ADT for counting block visits -------------*- C++ -*-//
+//             
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines GRBlockCounter, an abstract data type used to count
+//  the number of times a given block has been visited along a path
+//  analyzed by GRCoreEngine.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Analysis/PathSensitive/GRBlockCounter.h"
+#include "llvm/ADT/ImmutableMap.h"
+
+using namespace clang;
+
+typedef llvm::ImmutableMap<unsigned,unsigned> CountMap;
+
+static inline CountMap GetMap(void* D) {
+  return CountMap(static_cast<CountMap::TreeTy*>(D));
+}
+
+static inline CountMap::Factory& GetFactory(void* F) {
+  return *static_cast<CountMap::Factory*>(F);
+}
+
+unsigned GRBlockCounter::getNumVisited(unsigned BlockID) const {
+  CountMap M = GetMap(Data);
+  CountMap::TreeTy* T = M.SlimFind(BlockID);
+  return T ? T->getValue().second : 0;
+}
+
+GRBlockCounter::Factory::Factory(llvm::BumpPtrAllocator& Alloc) {
+  F = new CountMap::Factory(Alloc);
+}
+
+GRBlockCounter::Factory::~Factory() {
+  delete static_cast<CountMap::Factory*>(F);
+}
+
+GRBlockCounter
+GRBlockCounter::Factory::IncrementCount(GRBlockCounter BC, unsigned BlockID) {
+  return GRBlockCounter(GetFactory(F).Add(GetMap(BC.Data), BlockID,
+                                        BC.getNumVisited(BlockID)+1).getRoot());
+}
+
+GRBlockCounter
+GRBlockCounter::Factory::GetEmptyCounter() {
+  return GRBlockCounter(GetFactory(F).GetEmptyMap().getRoot());
+}