Cleanup patch set, and update README.TXT. Add three new patches.

1 files changed, 0 insertions, 73 deletions

diff --git a/contrib/llvm/patches/patch-r274442-llvm-r221709-debug-oom.diff b/contrib/llvm/patches/patch-r274442-llvm-r221709-debug-oom.diff
deleted file mode 100644
index f70ddce..0000000
--- a/contrib/llvm/patches/patch-r274442-llvm-r221709-debug-oom.diff
+++ /dev/null
@@ -1,73 +0,0 @@
-Pull in r221709 from upstream llvm trunk (by Frédéric Riss):
-
-  Totally forget deallocated SDNodes in SDDbgInfo.
-
-  What would happen before that commit is that the SDDbgValues associated with
-  a deallocated SDNode would be marked Invalidated, but SDDbgInfo would keep
-  a map entry keyed by the SDNode pointer pointing to this list of invalidated
-  SDDbgNodes. As the memory gets reused, the list might get wrongly associated
-  with another new SDNode. As the SDDbgValues are cloned when they are transfered,
-  this can lead to an exponential number of SDDbgValues being produced during
-  DAGCombine like in http://llvm.org/bugs/show_bug.cgi?id=20893
-
-  Note that the previous behavior wasn't really buggy as the invalidation made
-  sure that the SDDbgValues won't be used. This commit can be considered a
-  memory optimization and as such is really hard to validate in a unit-test.
-
-This should fix abnormally large memory usage and resulting OOM crashes
-when compiling certain ports with debug information.
-
-Reported by:	Dmitry Marakasov <amdmi3@amdmi3.ru>
-Upstream PRs:	http://llvm.org/PR19031 http://llvm.org/PR20893
-
-Introduced here: http://svnweb.freebsd.org/changeset/base/274442
-
-Index: include/llvm/CodeGen/SelectionDAG.h
-===================================================================
---- include/llvm/CodeGen/SelectionDAG.h
-+++ include/llvm/CodeGen/SelectionDAG.h
-@@ -127,6 +127,10 @@ class SDDbgInfo {
-       DbgValMap[Node].push_back(V);
-   }
- 
-+  /// \brief Invalidate all DbgValues attached to the node and remove
-+  /// it from the Node-to-DbgValues map.
-+  void erase(const SDNode *Node);
-+
-   void clear() {
-     DbgValMap.clear();
-     DbgValues.clear();
-Index: lib/CodeGen/SelectionDAG/SelectionDAG.cpp
-===================================================================
---- lib/CodeGen/SelectionDAG/SelectionDAG.cpp
-+++ lib/CodeGen/SelectionDAG/SelectionDAG.cpp
-@@ -625,6 +625,15 @@ void SelectionDAG::DeleteNodeNotInCSEMaps(SDNode *
-   DeallocateNode(N);
- }
- 
-+void SDDbgInfo::erase(const SDNode *Node) {
-+  DbgValMapType::iterator I = DbgValMap.find(Node);
-+  if (I == DbgValMap.end())
-+    return;
-+  for (unsigned J = 0, N = I->second.size(); J != N; ++J)
-+    I->second[J]->setIsInvalidated();
-+  DbgValMap.erase(I);
-+}
-+
- void SelectionDAG::DeallocateNode(SDNode *N) {
-   if (N->OperandsNeedDelete)
-     delete[] N->OperandList;
-@@ -635,10 +644,9 @@ void SelectionDAG::DeallocateNode(SDNode *N) {
- 
-   NodeAllocator.Deallocate(AllNodes.remove(N));
- 
--  // If any of the SDDbgValue nodes refer to this SDNode, invalidate them.
--  ArrayRef<SDDbgValue*> DbgVals = DbgInfo->getSDDbgValues(N);
--  for (unsigned i = 0, e = DbgVals.size(); i != e; ++i)
--    DbgVals[i]->setIsInvalidated();
-+  // If any of the SDDbgValue nodes refer to this SDNode, invalidate
-+  // them and forget about that node.
-+  DbgInfo->erase(N);
- }
- 
- /// RemoveNodeFromCSEMaps - Take the specified node out of the CSE map that