Add a generalised 'case' construct.

Besides assigning edge weights, it will also be used by the cmd_line tool property.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51727 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/Graph.td b/tools/llvmc2/Graph.td
index 6fb998b..5c2902e 100644
--- a/tools/llvmc2/Graph.td
+++ b/tools/llvmc2/Graph.td
@@ -26,22 +26,24 @@
     Edge<llvm_gcc_cpp, llc>,
     Edge<llvm_as, llc>,
 
-    OptionalEdge<llvm_gcc_c, opt, [(switch_on "opt")]>,
-    OptionalEdge<llvm_gcc_cpp, opt, [(switch_on "opt")]>,
-    OptionalEdge<llvm_as, opt, [(switch_on "opt")]>,
+    OptionalEdge<llvm_gcc_c, opt, (case (switch_on "opt"), (inc_weight))>,
+    OptionalEdge<llvm_gcc_cpp, opt, (case (switch_on "opt"), (inc_weight))>,
+    OptionalEdge<llvm_as, opt, (case (switch_on "opt"), (inc_weight))>,
     Edge<opt, llc>,
 
     Edge<llc, llvm_gcc_assembler>,
     Edge<llvm_gcc_assembler, llvm_gcc_linker>,
     OptionalEdge<llvm_gcc_assembler, llvm_gcc_cpp_linker,
-                 [(if_input_languages_contain "c++"),
-                  (or (parameter_equals "linker", "g++"),
-                      (parameter_equals "linker", "c++"))]>,
+                 (case
+                     (input_languages_contain "c++"), (inc_weight),
+                     (or (parameter_equals "linker", "g++"),
+                         (parameter_equals "linker", "c++")), (inc_weight))>,
 
 
     Edge<root, llvm_gcc_linker>,
     OptionalEdge<root, llvm_gcc_cpp_linker,
-                 [(if_input_languages_contain "c++"),
-                  (or (parameter_equals "linker", "g++"),
-                      (parameter_equals "linker", "c++"))]>
+                 (case
+                     (input_languages_contain "c++"), (inc_weight),
+                     (or (parameter_equals "linker", "g++"),
+                         (parameter_equals "linker", "c++")), (inc_weight))>
     ]>;