Change ExplodedNode to have its NodeGroups all BumpPtrAllocated, avoiding malloc() traffic when adding successors/predecessors to a node. This was done by introducing BumpVector, which is essentially SmallVector with all memory being BumpPtrAllocated (this can certainly be cleaned up or moved into llvm/ADT).
This change yields a 1.8% speed increase when running the analyzer (with -analyzer-store=region) on a small benchmark file.
llvm-svn: 83439
diff --git a/clang/lib/Analysis/BugReporter.cpp b/clang/lib/Analysis/BugReporter.cpp
index 064fff4..8235f4a 100644
--- a/clang/lib/Analysis/BugReporter.cpp
+++ b/clang/lib/Analysis/BugReporter.cpp
@@ -1432,7 +1432,7 @@
// Link up the new node with the previous node.
if (Last)
- NewN->addPredecessor(Last);
+ NewN->addPredecessor(Last, *GNew);
Last = NewN;