1 files changed, 29 insertions, 9 deletions

diff --git a/include/clang/Driver/ToolChain.h b/include/clang/Driver/ToolChain.h
index d5f75b8271..4ccf8413ff 100644
--- a/include/clang/Driver/ToolChain.h
+++ b/include/clang/Driver/ToolChain.h
@@ -1,9 +1,8 @@
 //===- ToolChain.h - Collections of tools for one platform ------*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
@@ -100,11 +99,19 @@ public:
     RLT_Libgcc
   };
 
+  enum UnwindLibType {
+    UNW_None,
+    UNW_CompilerRT,
+    UNW_Libgcc
+  };
+
   enum RTTIMode {
     RM_Enabled,
     RM_Disabled,
   };
 
+  enum FileType { FT_Object, FT_Static, FT_Shared };
+
 private:
   friend class RegisterEffectiveTriple;
 
@@ -368,15 +375,19 @@ public:
     return ToolChain::CST_Libstdcxx;
   }
 
+  virtual UnwindLibType GetDefaultUnwindLibType() const {
+    return ToolChain::UNW_None;
+  }
+
   virtual std::string getCompilerRTPath() const;
 
   virtual std::string getCompilerRT(const llvm::opt::ArgList &Args,
                                     StringRef Component,
-                                    bool Shared = false) const;
+                                    FileType Type = ToolChain::FT_Static) const;
 
-  const char *getCompilerRTArgString(const llvm::opt::ArgList &Args,
-                                     StringRef Component,
-                                     bool Shared = false) const;
+  const char *
+  getCompilerRTArgString(const llvm::opt::ArgList &Args, StringRef Component,
+                         FileType Type = ToolChain::FT_Static) const;
 
   // Returns <ResourceDir>/lib/<OSName>/<arch>.  This is used by runtimes (such
   // as OpenMP) to find arch-specific libraries.
@@ -401,6 +412,9 @@ public:
   /// Test whether this toolchain defaults to PIE.
   virtual bool isPIEDefault() const = 0;
 
+  /// Test whether this toolchaind defaults to non-executable stacks.
+  virtual bool isNoExecStackDefault() const;
+
   /// Tests whether this toolchain forces its default for PIC, PIE or
   /// non-PIC.  If this returns true, any PIC related flags should be ignored
   /// and instead the results of \c isPICDefault() and \c isPIEDefault() are
@@ -512,6 +526,10 @@ public:
   // given compilation arguments.
   virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const;
 
+  // GetUnwindLibType - Determine the unwind library type to use with the
+  // given compilation arguments.
+  virtual UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const;
+
   /// AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set
   /// the include paths to use for the given C++ standard library type.
   virtual void
@@ -564,7 +582,9 @@ public:
   virtual SanitizerMask getSupportedSanitizers() const;
 
   /// Return sanitizers which are enabled by default.
-  virtual SanitizerMask getDefaultSanitizers() const { return 0; }
+  virtual SanitizerMask getDefaultSanitizers() const {
+    return SanitizerMask();
+  }
 };
 
 /// Set a ToolChain's effective triple. Reset it when the registration object