MFC 261991:

Upgrade our copy of llvm/clang to 3.4 release.  This version supports
all of the features in the current working draft of the upcoming C++
standard, provisionally named C++1y.

The code generator's performance is greatly increased, and the loop
auto-vectorizer is now enabled at -Os and -O2 in addition to -O3.  The
PowerPC backend has made several major improvements to code generation
quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ
backends have all seen major feature work.

Release notes for llvm and clang can be found here:
<http://llvm.org/releases/3.4/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html>

MFC 262121 (by emaste):

Update lldb for clang/llvm 3.4 import

This commit largely restores the lldb source to the upstream r196259
snapshot with the addition of threaded inferior support and a few bug
fixes.

Specific upstream lldb revisions restored include:
   SVN      git
  181387  779e6ac
  181703  7bef4e2
  182099  b31044e
  182650  f2dcf35
  182683  0d91b80
  183862  15c1774
  183929  99447a6
  184177  0b2934b
  184948  4dc3761
  184954  007e7bc
  186990  eebd175

Sponsored by:	DARPA, AFRL

MFC 262186 (by emaste):

Fix mismerge in r262121

A break statement was lost in the merge.  The error had no functional
impact, but restore it to reduce the diff against upstream.

MFC 262303:

Pull in r197521 from upstream clang trunk (by rdivacky):

  Use the integrated assembler by default on FreeBSD/ppc and ppc64.

Requested by:	jhibbits

MFC 262611:

Pull in r196874 from upstream llvm trunk:

  Fix a crash that occurs when PWD is invalid.

  MCJIT needs to be able to run in hostile environments, even when PWD
  is invalid. There's no need to crash MCJIT in this case.

  The obvious fix is to simply leave MCContext's CompilationDir empty
  when PWD can't be determined. This way, MCJIT clients,
  and other clients that link with LLVM don't need a valid working directory.

  If we do want to guarantee valid CompilationDir, that should be done
  only for clients of getCompilationDir(). This is as simple as checking
  for an empty string.

  The only current use of getCompilationDir is EmitGenDwarfInfo, which
  won't conceivably run with an invalid working dir. However, in the
  purely hypothetically and untestable case that this happens, the
  AT_comp_dir will be omitted from the compilation_unit DIE.

This should help fix assertions occurring with ports-mgmt/tinderbox,
when it is using jails, and sometimes invalidates clang's current
working directory.

Reported by:	decke

MFC 262809:

Pull in r203007 from upstream clang trunk:

  Don't produce an alias between destructors with different calling conventions.

  Fixes pr19007.

(Please note that is an LLVM PR identifier, not a FreeBSD one.)

This should fix Firefox and/or libxul crashes (due to problems with
regparm/stdcall calling conventions) on i386.

Reported by:	multiple users on freebsd-current
PR:		bin/187103

MFC 263048:

Repair recognition of "CC" as an alias for the C++ compiler, since it
was silently broken by upstream for a Windows-specific use-case.

Apparently some versions of CMake still rely on this archaic feature...

Reported by:	rakuco

MFC 263049:

Garbage collect the old way of adding the libstdc++ include directories
in clang's InitHeaderSearch.cpp.  This has been superseded by David
Chisnall's commit in r255321.

Moreover, if libc++ is used, the libstdc++ include directories should
not be in the search path at all.  These directories are now only used
if you pass -stdlib=libstdc++.

1 files changed, 31 insertions, 31 deletions

diff --git a/contrib/llvm/include/llvm/CodeGen/PBQP/HeuristicBase.h b/contrib/llvm/include/llvm/CodeGen/PBQP/HeuristicBase.h
index 0c1fcb7..8bcbb9e 100644
--- a/contrib/llvm/include/llvm/CodeGen/PBQP/HeuristicBase.h
+++ b/contrib/llvm/include/llvm/CodeGen/PBQP/HeuristicBase.h
@@ -27,7 +27,7 @@ namespace PBQP {
   ///   <li> void heuristicReduce() : Perform a single heuristic reduction.
   ///   <li> void preUpdateEdgeCosts(Graph::EdgeItr) : Handle the (imminent)
   ///        change to the cost matrix on the given edge (by R2).
-  ///   <li> void postUpdateEdgeCostts(Graph::EdgeItr) : Handle the new 
+  ///   <li> void postUpdateEdgeCostts(Graph::EdgeItr) : Handle the new
   ///        costs on the given edge.
   ///   <li> void handleAddEdge(Graph::EdgeItr) : Handle the addition of a new
   ///        edge into the PBQP graph (by R2).
@@ -39,7 +39,7 @@ namespace PBQP {
   ///
   /// These methods are implemented in this class for documentation purposes,
   /// but will assert if called.
-  /// 
+  ///
   /// Note that this class uses the curiously recursive template idiom to
   /// forward calls to the derived class. These methods need not be made
   /// virtual, and indeed probably shouldn't for performance reasons.
@@ -52,7 +52,7 @@ namespace PBQP {
   class HeuristicBase {
   private:
 
-    typedef std::list<Graph::NodeItr> OptimalList;
+    typedef std::list<Graph::NodeId> OptimalList;
 
     HeuristicSolverImpl<HImpl> &s;
     Graph &g;
@@ -62,9 +62,9 @@ namespace PBQP {
     HImpl& impl() { return static_cast<HImpl&>(*this); }
 
     // Add the given node to the optimal reductions list. Keep an iterator to
-    // its location for fast removal. 
-    void addToOptimalReductionList(Graph::NodeItr nItr) {
-      optimalList.insert(optimalList.end(), nItr);
+    // its location for fast removal.
+    void addToOptimalReductionList(Graph::NodeId nId) {
+      optimalList.insert(optimalList.end(), nId);
     }
 
   public:
@@ -94,7 +94,7 @@ namespace PBQP {
     /// behaviour.
     bool solverRunSimplify() const { return true; }
 
-    /// \brief Decide whether a node should be optimally or heuristically 
+    /// \brief Decide whether a node should be optimally or heuristically
     ///        reduced.
     /// @return Whether or not the given node should be listed for optimal
     ///         reduction (via R0, R1 or R2).
@@ -105,21 +105,21 @@ namespace PBQP {
     /// criteria. Note however that your criteria for selecting optimal nodes
     /// should be <i>at least</i> as strong as this. I.e. Nodes of degree 3 or
     /// higher should not be selected under any circumstances.
-    bool shouldOptimallyReduce(Graph::NodeItr nItr) {
-      if (g.getNodeDegree(nItr) < 3)
+    bool shouldOptimallyReduce(Graph::NodeId nId) {
+      if (g.getNodeDegree(nId) < 3)
         return true;
       // else
       return false;
     }
 
     /// \brief Add the given node to the list of nodes to be optimally reduced.
-    /// @param nItr Node iterator to be added.
+    /// @param nId Node id to be added.
     ///
     /// You probably don't want to over-ride this, except perhaps to record
     /// statistics before calling this implementation. HeuristicBase relies on
     /// its behaviour.
-    void addToOptimalReduceList(Graph::NodeItr nItr) {
-      optimalList.push_back(nItr);
+    void addToOptimalReduceList(Graph::NodeId nId) {
+      optimalList.push_back(nId);
     }
 
     /// \brief Initialise the heuristic.
@@ -132,10 +132,10 @@ namespace PBQP {
     void setup() {
       for (Graph::NodeItr nItr = g.nodesBegin(), nEnd = g.nodesEnd();
            nItr != nEnd; ++nItr) {
-        if (impl().shouldOptimallyReduce(nItr)) {
-          addToOptimalReduceList(nItr);
+        if (impl().shouldOptimallyReduce(*nItr)) {
+          addToOptimalReduceList(*nItr);
         } else {
-          impl().addToHeuristicReduceList(nItr);
+          impl().addToHeuristicReduceList(*nItr);
         }
       }
     }
@@ -150,13 +150,13 @@ namespace PBQP {
       if (optimalList.empty())
         return false;
 
-      Graph::NodeItr nItr = optimalList.front();
+      Graph::NodeId nId = optimalList.front();
       optimalList.pop_front();
 
-      switch (s.getSolverDegree(nItr)) {
-        case 0: s.applyR0(nItr); break;
-        case 1: s.applyR1(nItr); break;
-        case 2: s.applyR2(nItr); break;
+      switch (s.getSolverDegree(nId)) {
+        case 0: s.applyR0(nId); break;
+        case 1: s.applyR1(nId); break;
+        case 2: s.applyR2(nId); break;
         default: llvm_unreachable(
                         "Optimal reductions of degree > 2 nodes is invalid.");
       }
@@ -184,8 +184,8 @@ namespace PBQP {
     }
 
     /// \brief Add a node to the heuristic reduce list.
-    /// @param nItr Node iterator to add to the heuristic reduce list.
-    void addToHeuristicList(Graph::NodeItr nItr) {
+    /// @param nId Node id to add to the heuristic reduce list.
+    void addToHeuristicList(Graph::NodeId nId) {
       llvm_unreachable("Must be implemented in derived class.");
     }
 
@@ -199,31 +199,31 @@ namespace PBQP {
     }
 
     /// \brief Prepare a change in the costs on the given edge.
-    /// @param eItr Edge iterator.    
-    void preUpdateEdgeCosts(Graph::EdgeItr eItr) {
+    /// @param eId Edge id.
+    void preUpdateEdgeCosts(Graph::EdgeId eId) {
       llvm_unreachable("Must be implemented in derived class.");
     }
 
     /// \brief Handle the change in the costs on the given edge.
-    /// @param eItr Edge iterator.
-    void postUpdateEdgeCostts(Graph::EdgeItr eItr) {
+    /// @param eId Edge id.
+    void postUpdateEdgeCostts(Graph::EdgeId eId) {
       llvm_unreachable("Must be implemented in derived class.");
     }
 
     /// \brief Handle the addition of a new edge into the PBQP graph.
-    /// @param eItr Edge iterator for the added edge.
-    void handleAddEdge(Graph::EdgeItr eItr) {
+    /// @param eId Edge id for the added edge.
+    void handleAddEdge(Graph::EdgeId eId) {
       llvm_unreachable("Must be implemented in derived class.");
     }
 
     /// \brief Handle disconnection of an edge from a node.
-    /// @param eItr Edge iterator for edge being disconnected.
-    /// @param nItr Node iterator for the node being disconnected from.
+    /// @param eId Edge id for edge being disconnected.
+    /// @param nId Node id for the node being disconnected from.
     ///
     /// Edges are frequently removed due to the removal of a node. This
     /// method allows for the effect to be computed only for the remaining
     /// node in the graph.
-    void handleRemoveEdge(Graph::EdgeItr eItr, Graph::NodeItr nItr) {
+    void handleRemoveEdge(Graph::EdgeId eId, Graph::NodeId nId) {
       llvm_unreachable("Must be implemented in derived class.");
     }