Rip out a bunch of code for invoking gcc from clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167567 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index e5fbc52..8a9381e 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -183,12 +183,6 @@
 Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA,
                          const ActionList &Inputs) const {
   Action::ActionClass Key = JA.getKind();
-
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) {
-    // FIXME: This seems like a hacky way to choose clang frontend.
-    Key = Action::AnalyzeJobClass;
-  }
-
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -200,13 +194,11 @@
     case Action::BindArchClass:
       llvm_unreachable("Invalid tool kind.");
     case Action::PreprocessJobClass:
-      T = new tools::darwin::Preprocess(*this); break;
     case Action::AnalyzeJobClass:
     case Action::MigrateJobClass:
-      T = new tools::Clang(*this); break;
     case Action::PrecompileJobClass:
     case Action::CompileJobClass:
-      T = new tools::darwin::Compile(*this); break;
+      T = new tools::Clang(*this); break;
     case Action::AssembleJobClass: {
       if (UseIntegratedAs)
         T = new tools::ClangAs(*this);
@@ -1425,11 +1417,7 @@
 Tool &Generic_GCC::SelectTool(const Compilation &C,
                               const JobAction &JA,
                               const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
+  Action::ActionClass Key = JA.getKind();
 
   Tool *&T = Tools[Key];
   if (!T) {
@@ -1438,14 +1426,11 @@
     case Action::BindArchClass:
       llvm_unreachable("Invalid tool kind.");
     case Action::PreprocessJobClass:
-      T = new tools::gcc::Preprocess(*this); break;
     case Action::PrecompileJobClass:
-      T = new tools::gcc::Precompile(*this); break;
     case Action::AnalyzeJobClass:
     case Action::MigrateJobClass:
-      T = new tools::Clang(*this); break;
     case Action::CompileJobClass:
-      T = new tools::gcc::Compile(*this); break;
+      T = new tools::Clang(*this); break;
     case Action::AssembleJobClass:
       T = new tools::gcc::Assemble(*this); break;
     case Action::LinkJobClass:
@@ -1495,27 +1480,18 @@
 Tool &Hexagon_TC::SelectTool(const Compilation &C,
                              const JobAction &JA,
                              const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  //   if (JA.getKind () == Action::CompileJobClass)
-  //     Key = JA.getKind ();
-  //     else
-
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-  //   if ((JA.getKind () == Action::CompileJobClass)
-  //     && (JA.getType () != types::TY_LTO_BC)) {
-  //     Key = JA.getKind ();
-  //   }
-
+  Action::ActionClass Key = JA.getKind();
   Tool *&T = Tools[Key];
   if (!T) {
     switch (Key) {
     case Action::InputClass:
     case Action::BindArchClass:
       assert(0 && "Invalid tool kind.");
+    case Action::PreprocessJobClass:
+    case Action::PrecompileJobClass:
     case Action::AnalyzeJobClass:
+    case Action::MigrateJobClass:
+    case Action::CompileJobClass:
       T = new tools::Clang(*this); break;
     case Action::AssembleJobClass:
       T = new tools::hexagon::Assemble(*this); break;
@@ -1599,12 +1575,7 @@
 
 Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA,
                           const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -1639,12 +1610,7 @@
 
 Tool &Bitrig::SelectTool(const Compilation &C, const JobAction &JA,
                          const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -1731,12 +1697,7 @@
 
 Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA,
                           const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -1780,12 +1741,7 @@
 
 Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA,
                          const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -1820,11 +1776,7 @@
 
 Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA,
                         const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
+  Action::ActionClass Key = JA.getKind();
 
   Tool *&T = Tools[Key];
   if (!T) {
@@ -1861,11 +1813,7 @@
 
 Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA,
                            const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
+  Action::ActionClass Key = JA.getKind();
 
   Tool *&T = Tools[Key];
   if (!T) {
@@ -1898,11 +1846,7 @@
 
 Tool &Solaris::SelectTool(const Compilation &C, const JobAction &JA,
                            const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
+  Action::ActionClass Key = JA.getKind();
 
   Tool *&T = Tools[Key];
   if (!T) {
@@ -2275,12 +2219,7 @@
 
 Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA,
                         const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
-
+  Action::ActionClass Key = JA.getKind();
   bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
                                              options::OPT_no_integrated_as,
                                              IsIntegratedAssemblerDefault());
@@ -2498,11 +2437,7 @@
 
 Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA,
                             const ActionList &Inputs) const {
-  Action::ActionClass Key;
-  if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
-    Key = Action::AnalyzeJobClass;
-  else
-    Key = JA.getKind();
+  Action::ActionClass Key = JA.getKind();
 
   Tool *&T = Tools[Key];
   if (!T) {