Make it possible to use the generalised 'case' construct in the cmd_line property.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51728 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/Action.h b/tools/llvmc2/Action.h
index 32d1855..0f3f0bd 100644
--- a/tools/llvmc2/Action.h
+++ b/tools/llvmc2/Action.h
@@ -25,9 +25,10 @@
   class Action {
     /// Command_ - The actual command (for example, 'ls').
     std::string Command_;
-    /// Args_ - Command arguments. Stdout redirection is allowed.
+    /// Args_ - Command arguments. Stdout redirection ("> file") is allowed.
     std::vector<std::string> Args_;
   public:
+    Action() {}
     Action (const std::string& C,
             const StringVector& A)
       : Command_(C), Args_(A)
diff --git a/tools/llvmc2/Common.td b/tools/llvmc2/Common.td
index 2a6b54e..364cac3 100644
--- a/tools/llvmc2/Common.td
+++ b/tools/llvmc2/Common.td
@@ -56,6 +56,7 @@
 def parameter_equals;
 def element_in_list;
 def input_languages_contain;
+def default;
 
 // Boolean operators.
 def and;
diff --git a/tools/llvmc2/CompilationGraph.cpp b/tools/llvmc2/CompilationGraph.cpp
index e06a168..7ce4313 100644
--- a/tools/llvmc2/CompilationGraph.cpp
+++ b/tools/llvmc2/CompilationGraph.cpp
@@ -177,7 +177,7 @@
       Out = MakeTempFile(TempDir, In.getBasename(), CurTool->OutputSuffix());
     }
 
-    if (int ret = CurTool->GenerateAction(In, Out).Execute())
+    if (int ret = CurTool->GenerateAction(In, Out, InLangs).Execute())
       throw error_code(ret);
 
     if (Last)
@@ -343,7 +343,7 @@
       Out = MakeTempFile(TempDir, "tmp", JT->OutputSuffix());
     }
 
-    if (int ret = JT->GenerateAction(Out).Execute())
+    if (int ret = JT->GenerateAction(Out, InLangs).Execute())
       throw error_code(ret);
 
     if (!IsLast) {
diff --git a/tools/llvmc2/CompilationGraph.h b/tools/llvmc2/CompilationGraph.h
index 91a9c77..6b2b290 100644
--- a/tools/llvmc2/CompilationGraph.h
+++ b/tools/llvmc2/CompilationGraph.h
@@ -16,6 +16,7 @@
 
 #include "AutoGenerated.h"
 #include "Tool.h"
+#include "StringSet.h"
 
 #include "llvm/ADT/GraphTraits.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
@@ -29,21 +30,6 @@
 
 namespace llvmc {
 
-  /// StringSet - A wrapper for StringMap that provides set-like
-  /// functionality.  Only insert() and count() methods are used by my
-  /// code.
-  template <class AllocatorTy = llvm::MallocAllocator>
-  class StringSet : public llvm::StringMap<char, AllocatorTy> {
-    typedef llvm::StringMap<char, AllocatorTy> base;
-  public:
-    void insert (const std::string& InLang) {
-      assert(!InLang.empty());
-      const char* KeyStart = &InLang[0];
-      const char* KeyEnd = KeyStart + InLang.size();
-      base::insert(llvm::StringMapEntry<char>::
-                   Create(KeyStart, KeyEnd, base::getAllocator(), '+'));
-    }
-  };
   typedef StringSet<> InputLanguagesSet;
 
   /// Edge - Represents an edge of the compilation graph.
diff --git a/tools/llvmc2/StringSet.h b/tools/llvmc2/StringSet.h
new file mode 100644
index 0000000..d9556cc
--- /dev/null
+++ b/tools/llvmc2/StringSet.h
@@ -0,0 +1,40 @@
+//===--- StringSet.h - The LLVM Compiler Driver -----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open
+// Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  StringSet - A set-like wrapper for the StringMap.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVMC2_STRINGSET_H
+#define LLVM_TOOLS_LLVMC2_STRINGSET_H
+
+#include "llvm/ADT/StringMap.h"
+
+#include <cassert>
+
+namespace llvmc {
+
+  /// StringSet - A wrapper for StringMap that provides set-like
+  /// functionality.  Only insert() and count() methods are used by my
+  /// code.
+  template <class AllocatorTy = llvm::MallocAllocator>
+  class StringSet : public llvm::StringMap<char, AllocatorTy> {
+    typedef llvm::StringMap<char, AllocatorTy> base;
+  public:
+    void insert (const std::string& InLang) {
+      assert(!InLang.empty());
+      const char* KeyStart = &InLang[0];
+      const char* KeyEnd = KeyStart + InLang.size();
+      base::insert(llvm::StringMapEntry<char>::
+                   Create(KeyStart, KeyEnd, base::getAllocator(), '+'));
+    }
+  };
+}
+
+#endif //LLVM_TOOLS_LLVMC2_STRINGSET_H
diff --git a/tools/llvmc2/Tool.h b/tools/llvmc2/Tool.h
index bfa7e46..3527817 100644
--- a/tools/llvmc2/Tool.h
+++ b/tools/llvmc2/Tool.h
@@ -15,6 +15,7 @@
 #define LLVM_TOOLS_LLVMC2_TOOL_H
 
 #include "Action.h"
+#include "StringSet.h"
 
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/System/Path.h"
@@ -33,10 +34,12 @@
     virtual ~Tool() {}
 
     virtual Action GenerateAction (const PathVector& inFiles,
-                                   const llvm::sys::Path& outFile) const = 0;
+                                   const llvm::sys::Path& outFile,
+                                   const StringSet<>& InLangs) const = 0;
 
     virtual Action GenerateAction (const llvm::sys::Path& inFile,
-                                   const llvm::sys::Path& outFile) const = 0;
+                                   const llvm::sys::Path& outFile,
+                                   const StringSet<>& InLangs) const = 0;
 
     virtual const char* Name() const = 0;
     virtual const char* InputLanguage() const = 0;
@@ -54,8 +57,10 @@
     void ClearJoinList() { JoinList_.clear(); }
     bool JoinListEmpty() const { return JoinList_.empty(); }
 
-    Action GenerateAction(const llvm::sys::Path& outFile) const
-    { return GenerateAction(JoinList_, outFile); }
+    Action GenerateAction(const llvm::sys::Path& outFile,
+                          const StringSet<>& InLangs) const {
+      return GenerateAction(JoinList_, outFile, InLangs);
+    }
     // We shouldn't shadow base class's version of GenerateAction.
     using Tool::GenerateAction;
 
diff --git a/tools/llvmc2/Tools.td b/tools/llvmc2/Tools.td
index 5a614cf..63b713f 100644
--- a/tools/llvmc2/Tools.td
+++ b/tools/llvmc2/Tools.td
@@ -25,8 +25,15 @@
 [(in_language "c"),
  (out_language "llvm-bitcode"),
  (output_suffix "bc"),
- (cmd_line "llvm-gcc -c -x c $INFILE -o $OUTFILE -emit-llvm"),
+ (cmd_line (case
+            (switch_on "E"),
+              "llvm-g++ -E -x c $INFILE -o $OUTFILE -emit-llvm",
+            (default),
+              "llvm-g++ -c -x c $INFILE -o $OUTFILE -emit-llvm")),
+ // TOFIX: Preprocessed files currently have suffix ".bc".
  (switch_option "E", (stop_compilation),
+    // Make this possible:
+    // (output_suffix "i"),
    (help "Stop after the preprocessing stage, do not run the compiler")),
  (sink)
 ]>;
@@ -35,7 +42,11 @@
 [(in_language "c++"),
  (out_language "llvm-bitcode"),
  (output_suffix "bc"),
- (cmd_line "llvm-g++ -c -x c++ $INFILE -o $OUTFILE -emit-llvm"),
+ (cmd_line (case
+            (switch_on "E"),
+              "llvm-g++ -E -x c++ $INFILE -o $OUTFILE -emit-llvm",
+            (default),
+              "llvm-g++ -c -x c++ $INFILE -o $OUTFILE -emit-llvm")),
  (switch_option "E", (stop_compilation)),
  (sink)
 ]>;