Driver: Add a toolchain hook for whether the system has native LLVM support.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114137 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 14 insertions, 0 deletions

diff --git a/include/clang/Driver/ToolChain.h b/include/clang/Driver/ToolChain.h
index a9de09c9d5..eed1cd6b3c 100644
--- a/include/clang/Driver/ToolChain.h
+++ b/include/clang/Driver/ToolChain.h
@@ -98,6 +98,10 @@ public:
 
   // Platform defaults information
 
+  /// HasNativeLTOLinker - Check whether the linker and related tools have
+  /// native LLVM support.
+  virtual bool HasNativeLLVMSupport() const;
+
   /// LookupTypeForExtension - Return the default language type to use for the
   /// given extension.
   virtual types::ID LookupTypeForExtension(const char *Ext) const;
diff --git a/lib/Driver/ToolChain.cpp b/lib/Driver/ToolChain.cpp
index 337ea4e8f9..e9a612c4cd 100644
--- a/lib/Driver/ToolChain.cpp
+++ b/lib/Driver/ToolChain.cpp
@@ -43,6 +43,10 @@ types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
   return types::lookupTypeForExtension(Ext);
 }
 
+bool ToolChain::HasNativeLLVMSupport() const {
+  return false;
+}
+
 /// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targetting.
 //
 // FIXME: tblgen this.
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 471c47dd2b..f5b45595fd 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -59,6 +59,10 @@ types::ID Darwin::LookupTypeForExtension(const char *Ext) const {
   return Ty;
 }
 
+bool Darwin::HasNativeLLVMSupport() const {
+  return true;
+}
+
 // FIXME: Can we tablegen this?
 static const char *GetArmArchForMArch(llvm::StringRef Value) {
   if (Value == "armv6k")
diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index d1f15565e6..587bf60de8 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -155,6 +155,8 @@ public:
 
   virtual types::ID LookupTypeForExtension(const char *Ext) const;
 
+  virtual bool HasNativeLLVMSupport() const;
+
   virtual DerivedArgList *TranslateArgs(const DerivedArgList &Args,
                                         const char *BoundArch) const;