Reuse DIEInteger for 1. This is frequently used while emitting an attribute using...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107903 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 775012b0531c70d7c0d0d86577672632397ecaca..6f2634bee71cb05a61a312a235c201c7f73d2cc6 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -322,6 +322,7 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
   DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = 0; 
   DwarfDebugLineSectionSym = CurrentLineSectionSym = 0;
   FunctionBeginSym = FunctionEndSym = 0;
+  DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
   {
     NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
     beginModule(M);
@@ -376,7 +377,8 @@ DIEEntry *DwarfDebug::createDIEEntry(DIE *Entry) {
 void DwarfDebug::addUInt(DIE *Die, unsigned Attribute,
                          unsigned Form, uint64_t Integer) {
   if (!Form) Form = DIEInteger::BestForm(false, Integer);
-  DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
+  DIEValue *Value = Integer == 1 ? 
+    DIEIntegerOne : new (DIEValueAllocator) DIEInteger(Integer);
   Die->addValue(Attribute, Form, Value);
 }
 

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index d57115ae1dc451b7c1fb47b15a3931f957226bc5..5a281c8517481517573145ee5761665e81d881af 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -263,6 +263,8 @@ class DwarfDebug {
   MCSymbol *DwarfDebugLocSectionSym;
   MCSymbol *DwarfDebugLineSectionSym, *CurrentLineSectionSym;
   MCSymbol *FunctionBeginSym, *FunctionEndSym;
+
+  DIEInteger *DIEIntegerOne;
 private:
   
   /// getSourceDirectoryAndFileIds - Return the directory and file ids that