DwarfDebug: Allocate DIEValues with a BumpPtrAllocator. Most of them are
POD-like anyway, so we don't even care about calling their d'tors (DIEBlock
being the exception).
~6% less mallocs and ~1% compile time improvement on clang -O0 -g oggenc.c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100035 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 5ab2a0c..ad6b0c2 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -19,6 +19,7 @@
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/Support/Allocator.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
@@ -98,9 +99,11 @@
/// Lines - List of source line correspondence.
std::vector<SrcLineInfo> Lines;
- /// DIEValues - A list of all the unique values in use.
- ///
- std::vector<DIEValue *> DIEValues;
+ /// DIEBlocks - A list of all the DIEBlocks in use.
+ std::vector<DIEBlock *> DIEBlocks;
+
+ // DIEValueAllocator - All DIEValues are allocated through this allocator.
+ BumpPtrAllocator DIEValueAllocator;
/// StringPool - A String->Symbol mapping of strings used by indirect
/// references.