Add new edge property combinator: weight.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50765 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc2/Common.td b/tools/llvmc2/Common.td
index db28841..32e0180 100644
--- a/tools/llvmc2/Common.td
+++ b/tools/llvmc2/Common.td
@@ -53,6 +53,7 @@
def if_input_languages_contain;
// Edge property combinators.
+def weight;
def and;
def or;
@@ -77,8 +78,8 @@
class Edge<Tool t1, Tool t2> : EdgeBase<t1, t2, []>;
-// Edge and DefaultEdge are synonyms.
-class DefaultEdge<Tool t1, Tool t2> : EdgeBase<t1, t2, []>;
+// Edge and SimpleEdge are synonyms.
+class SimpleEdge<Tool t1, Tool t2> : EdgeBase<t1, t2, []>;
// Optionally enabled edge.
class OptionalEdge<Tool t1, Tool t2, list<dag> lst> : EdgeBase<t1, t2, lst>;
diff --git a/tools/llvmc2/doc/LLVMC-Tutorial.rst b/tools/llvmc2/doc/LLVMC-Tutorial.rst
index 91a0561..b8a364f 100644
--- a/tools/llvmc2/doc/LLVMC-Tutorial.rst
+++ b/tools/llvmc2/doc/LLVMC-Tutorial.rst
@@ -120,11 +120,20 @@
language belongs to the current input language set.
- ``and`` - Edge property combinator. Returns true if all of its
- arguments return true. Used like this: (and
- (prop1), (prop2), ... (propN)). Nesting not allowed.
+ arguments return true. Used like this: ``(and (prop1), (prop2),
+ ... (propN))``. Nesting is allowed, but not encouraged.
- ``or`` - Edge property combinator that returns true if any one of its
- arguments returns true. Example: (or (prop1), (prop2), ... (propN))
+ arguments returns true. Example: ``(or (prop1), (prop2), ... (propN))``.
+
+ - ``weight`` - Makes it possible to explicitly specify the quantity
+ added to the edge weight if this edge property matches. Used like
+ this: ``(weight N, (prop))``. The inner property can include
+ ``and`` and ``or`` combinators. When N is equal to 2, equivalent
+ to ``(prop)``.
+
+ Example: ``(weight 8, (and (switch_on "a"), (switch_on "b")))``.
+
To get a visual representation of the compilation graph (useful for
debugging), run ``llvmc2 --view-graph``. You will need ``dot`` and