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.

llvm-svn: 48402

clang/lib/Analysis/ProgramPoint.cpp

@@ -0,0 +1,65 @@
+//= ProgramPoint.cpp - Program Points for Path-Sensitive Analysis --*- C++ -*-//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements methods for subclasses of ProgramPoint.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/CFG.h"
+#include "clang/Analysis/ProgramPoint.h"
+
+using namespace clang;
+
+BlockEdge::BlockEdge(CFG& cfg, const CFGBlock* B1, const CFGBlock* B2) {    
+  if (B1->succ_size() == 1) {
+    assert (*(B1->succ_begin()) == B2);
+    Data = reinterpret_cast<uintptr_t>(B1) | BlockEdgeSrcKind;
+  }
+  else if (B2->pred_size() == 1) {
+    assert (*(B2->pred_begin()) == B1);
+    Data = reinterpret_cast<uintptr_t>(B2) | BlockEdgeDstKind;
+  }
+  else 
+    Data = reinterpret_cast<uintptr_t>(cfg.getBlockEdgeImpl(B1,B2)) 
+            | BlockEdgeAuxKind;
+}
+
+CFGBlock* BlockEdge::getSrc() const {
+  switch (getKind()) {
+    default:
+      assert (false && "Invalid BlockEdgeKind.");
+      return NULL;
+      
+    case BlockEdgeSrcKind:
+      return reinterpret_cast<CFGBlock*>(getRawPtr());
+      
+    case BlockEdgeDstKind:
+      return *(reinterpret_cast<CFGBlock*>(getRawPtr())->pred_begin());        
+      
+    case BlockEdgeAuxKind:
+      return reinterpret_cast<BPair*>(getRawPtr())->first;
+  }
+}
+
+CFGBlock* BlockEdge::getDst() const {
+  switch (getKind()) {
+    default:
+      assert (false && "Invalid BlockEdgeKind.");
+      return NULL;
+      
+    case BlockEdgeSrcKind:
+      return *(reinterpret_cast<CFGBlock*>(getRawPtr())->succ_begin());
+      
+    case BlockEdgeDstKind:
+      return reinterpret_cast<CFGBlock*>(getRawPtr());
+      
+    case BlockEdgeAuxKind:
+      return reinterpret_cast<BPair*>(getRawPtr())->second;
+  }
+}