[Demangle] remove unused params of itaniumDemangle

No call sites use these parameters, so drop them.
Equivalent to D148940.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D149703

1 files changed, 4 insertions, 6 deletions

diff --git a/llvm/lib/Demangle/ItaniumDemangle.cpp b/llvm/lib/Demangle/ItaniumDemangle.cpp
index 7a7bcd3..e97ceeb 100644
--- a/llvm/lib/Demangle/ItaniumDemangle.cpp
+++ b/llvm/lib/Demangle/ItaniumDemangle.cpp
@@ -365,9 +365,8 @@ public:
 
 using Demangler = itanium_demangle::ManglingParser<DefaultAllocator>;
 
-char *llvm::itaniumDemangle(const char *MangledName, char *Buf,
-                            size_t *N, int *Status) {
-  if (MangledName == nullptr || (Buf != nullptr && N == nullptr)) {
+char *llvm::itaniumDemangle(const char *MangledName, int *Status) {
+  if (MangledName == nullptr) {
     if (Status)
       *Status = demangle_invalid_args;
     return nullptr;
@@ -377,15 +376,14 @@ char *llvm::itaniumDemangle(const char *MangledName, char *Buf,
   Demangler Parser(MangledName, MangledName + std::strlen(MangledName));
   Node *AST = Parser.parse();
 
+  char *Buf;
   if (AST == nullptr)
     InternalStatus = demangle_invalid_mangled_name;
   else {
-    OutputBuffer OB(Buf, N);
+    OutputBuffer OB;
     assert(Parser.ForwardTemplateRefs.empty());
     AST->print(OB);
     OB += '\0';
-    if (N != nullptr)
-      *N = OB.getCurrentPosition();
     Buf = OB.getBuffer();
   }