[DirectX] Fix BitcodeWriter ctor after #92983

Author: MaskRay

llvm/lib/Target/DirectX/DXILWriter/DXILBitcodeWriter.cpp

@@ -369,9 +369,8 @@ using namespace llvm::dxil;
 /// Begin dxil::BitcodeWriter Implementation
 ////////////////////////////////////////////////////////////////////////////////
 
-dxil::BitcodeWriter::BitcodeWriter(SmallVectorImpl<char> &Buffer,
-                                   raw_fd_stream *FS)
-    : Buffer(Buffer), Stream(new BitstreamWriter(Buffer, FS, 512)) {
+dxil::BitcodeWriter::BitcodeWriter(SmallVectorImpl<char> &Buffer)
+    : Buffer(Buffer), Stream(new BitstreamWriter(Buffer)) {
   // Emit the file header.
   Stream->Emit((unsigned)'B', 8);
   Stream->Emit((unsigned)'C', 8);
@@ -394,7 +393,7 @@ void dxil::WriteDXILToFile(const Module &M, raw_ostream &Out) {
   if (TT.isOSDarwin() || TT.isOSBinFormatMachO())
     Buffer.insert(Buffer.begin(), BWH_HeaderSize, 0);
 
-  BitcodeWriter Writer(Buffer, dyn_cast<raw_fd_stream>(&Out));
+  BitcodeWriter Writer(Buffer);
   Writer.writeModule(M);
 
   // Write the generated bitstream to "Out".

llvm/lib/Target/DirectX/DXILWriter/DXILBitcodeWriter.h

@@ -47,7 +47,7 @@ class BitcodeWriter {
 
 public:
   /// Create a BitcodeWriter that writes to Buffer.
-  BitcodeWriter(SmallVectorImpl<char> &Buffer, raw_fd_stream *FS = nullptr);
+  BitcodeWriter(SmallVectorImpl<char> &Buffer);
 
   ~BitcodeWriter();