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diff --git a/contrib/llvm/tools/llvmc/src/Clang.td b/contrib/llvm/tools/llvmc/src/Clang.td
new file mode 100644
index 0000000..1d75743
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+++ b/contrib/llvm/tools/llvmc/src/Clang.td
@@ -0,0 +1,87 @@
+//===- Clang.td - LLVMC toolchain descriptions -------------*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains compilation graph description used by llvmc.
+//
+//===----------------------------------------------------------------------===//
+
+
+def Options : OptionList<[
+(switch_option "clang", (help "Use Clang instead of llvm-gcc"))
+]>;
+
+class clang_based<string language, string cmd, string ext_E> : Tool<
+[(in_language language),
+ (out_language "llvm-bitcode"),
+ (output_suffix "bc"),
+ (command cmd),
+ (actions (case (switch_on "E"),
+                    [(forward "E"), (stop_compilation), (output_suffix ext_E)],
+                (and (switch_on "E"), (empty "o")), (no_out_file),
+                (switch_on "fsyntax-only"), (stop_compilation),
+                (switch_on ["S", "emit-llvm"]),
+                           [(append_cmd "-emit-llvm"),
+                            (stop_compilation), (output_suffix "ll")],
+                (not (switch_on ["S", "emit-llvm"])),
+                     (append_cmd "-emit-llvm-bc"),
+                (switch_on ["c", "emit-llvm"]),
+                           (stop_compilation),
+                (not_empty "include"), (forward "include"),
+                (not_empty "I"), (forward "I"))),
+ (sink)
+]>;
+
+def clang_c : clang_based<"c", "clang -x c", "i">;
+def clang_cpp : clang_based<"c++", "clang -x c++", "i">;
+def clang_objective_c : clang_based<"objective-c",
+    "clang -x objective-c", "mi">;
+def clang_objective_cpp : clang_based<"objective-c++",
+    "clang -x objective-c++", "mi">;
+
+def as : Tool<
+[(in_language "assembler"),
+ (out_language "object-code"),
+ (output_suffix "o"),
+ (command "as"),
+ (actions (case (not_empty "Wa,"), (forward_value "Wa,"),
+                (switch_on "c"), (stop_compilation)))
+]>;
+
+// Default linker
+def llvm_ld : Tool<
+[(in_language "object-code"),
+ (out_language "executable"),
+ (output_suffix "out"),
+ (command "llvm-ld -native -disable-internalize"),
+ (actions (case
+          (switch_on "pthread"), (append_cmd "-lpthread"),
+          (not_empty "L"), (forward "L"),
+          (not_empty "l"), (forward "l"),
+          (not_empty "Wl,"), (forward_value "Wl,"))),
+ (join)
+]>;
+
+// Compilation graph
+
+def ClangCompilationGraph : CompilationGraph<[
+    (optional_edge "root", "clang_c",
+                           (case (switch_on "clang"), (inc_weight))),
+    (optional_edge "root", "clang_cpp",
+                           (case (switch_on "clang"), (inc_weight))),
+    (optional_edge "root", "clang_objective_c",
+                           (case (switch_on "clang"), (inc_weight))),
+    (optional_edge "root", "clang_objective_cpp",
+                           (case (switch_on "clang"), (inc_weight))),
+    (edge "clang_c", "llc"),
+    (edge "clang_cpp", "llc"),
+    (edge "clang_objective_c", "llc"),
+    (edge "clang_objective_cpp", "llc"),
+    (optional_edge "llc", "as", (case (switch_on "clang"), (inc_weight))),
+    (edge "as", "llvm_ld")
+]>;