Use the integrated assembler on NetBSD/powerpc by default.

llvm-svn: 188462
diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index d5c57a9..9e83013 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -514,6 +514,11 @@
   virtual void
   AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs,
                                llvm::opt::ArgStringList &CC1Args) const;
+  virtual bool IsIntegratedAssemblerDefault() const {
+    if (getTriple().getArch() == llvm::Triple::ppc)
+      return true;
+    return Generic_ELF::IsIntegratedAssemblerDefault();
+  }
 
 protected:
   virtual Tool *buildAssembler() const;