Add support for DW_TAG_unspecified_parameters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115833 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Analysis/DebugInfo.h b/include/llvm/Analysis/DebugInfo.h
index 4189f5d..8b4a4c1 100644
--- a/include/llvm/Analysis/DebugInfo.h
+++ b/include/llvm/Analysis/DebugInfo.h
@@ -119,6 +119,7 @@
bool isEnumerator() const;
bool isType() const;
bool isGlobal() const;
+ bool isUnspecifiedParameter() const;
};
/// DISubrange - This is used to represent ranges, for array bounds.
@@ -626,6 +627,10 @@
/// implicitly uniques the values returned.
DISubrange GetOrCreateSubrange(int64_t Lo, int64_t Hi);
+ /// CreateUnspecifiedParameter - Create unspeicified type descriptor
+ /// for a subroutine type.
+ DIDescriptor CreateUnspecifiedParameter();
+
/// CreateCompileUnit - Create a new descriptor for the specified compile
/// unit.
DICompileUnit CreateCompileUnit(unsigned LangID,
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 06a66d5..3dd6598 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -199,6 +199,12 @@
return isGlobalVariable();
}
+/// isUnspecifiedParmeter - Return true if the specified tab is
+/// DW_TAG_unspecified_parameters.
+bool DIDescriptor::isUnspecifiedParameter() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
+}
+
/// isScope - Return true if the specified tag is one of the scope
/// related tag.
bool DIDescriptor::isScope() const {
@@ -724,7 +730,14 @@
return DISubrange(MDNode::get(VMContext, &Elts[0], 3));
}
-
+/// CreateUnspecifiedParameter - Create unspeicified type descriptor
+/// for the subroutine type.
+DIDescriptor DIFactory::CreateUnspecifiedParameter() {
+ Value *Elts[] = {
+ GetTagConstant(dwarf::DW_TAG_unspecified_parameters)
+ };
+ return DIDescriptor(MDNode::get(VMContext, &Elts[0], 1));
+}
/// CreateCompileUnit - Create a new descriptor for the specified compile
/// unit. Note that this does not unique compile units within the module.
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index ddda184..b2ae1a2 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1042,16 +1042,25 @@
DIDescriptor RTy = Elements.getElement(0);
addType(&Buffer, DIType(RTy));
- // Add prototype flag.
- addUInt(&Buffer, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
-
+ bool isPrototyped = true;
// Add arguments.
for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
- DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
DIDescriptor Ty = Elements.getElement(i);
- addType(Arg, DIType(Ty));
- Buffer.addChild(Arg);
+ if (Ty.isUnspecifiedParameter()) {
+ DIE *Arg = new DIE(dwarf::DW_TAG_unspecified_parameters);
+ Buffer.addChild(Arg);
+ isPrototyped = false;
+ } else {
+ DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
+ addType(Arg, DIType(Ty));
+ Buffer.addChild(Arg);
+ }
}
+ // Add prototype flag.
+ if (isPrototyped)
+ addUInt(&Buffer, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
+
+
}
break;
case dwarf::DW_TAG_structure_type: