[Dwarf] avoid emitting multiple AT_const_value for static memebers.
Testing case is reduced from MultiSource/BenchMarks/Prolangs-C++/deriv1.
rdar://problem/13071590
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174235 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index f0655e6..dad1054 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -1286,6 +1286,7 @@
// If this is a static data member definition, some attributes belong
// to the declaration DIE.
DIE *VariableDIE = NULL;
+ bool IsStaticMember = false;
DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration();
if (SDMDecl.Verify()) {
assert(SDMDecl.isStaticMember() && "Expected static member decl");
@@ -1295,6 +1296,7 @@
getOrCreateContextDIE(SDMDecl.getContext());
VariableDIE = getDIE(SDMDecl);
assert(VariableDIE && "Static member decl has no context?");
+ IsStaticMember = true;
}
// If this is not a static data member definition, create the variable
@@ -1348,9 +1350,13 @@
addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
getRealLinkageName(LinkageName));
} else if (const ConstantInt *CI =
- dyn_cast_or_null<ConstantInt>(GV.getConstant()))
- addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
- else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
+ dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
+ // AT_const_value was added when the static memeber was created. To avoid
+ // emitting AT_const_value multiple times, we only add AT_const_value when
+ // it is not a static member.
+ if (!IsStaticMember)
+ addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
+ } else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
addToAccelTable = true;
// GV is a merged global.
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();