[turbofan] First version of loop peeling.

src/compiler/common-operator.h

Index: src/compiler/common-operator.h
diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index d61e110a12d6cbd4ec510b74196289e0c283aebd..801cefa51cb44b9a1156992fc51a14c5528dc026 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -56,6 +56,8 @@ std::ostream& operator<<(std::ostream&, SelectParameters const& p);
 
 SelectParameters const& SelectParametersOf(const Operator* const);
 
+const Operator* ResizeMergeOperator(const Operator* const);

[Benedikt Meurer, 2015/01/16 17:55:36]

Dead method?

[titzer, 2015/01/19 09:47:12]

Done.

+
 
 // Flag that describes how to combine the current environment with
 // the output of a node to obtain a framestate for lazy bailout.
@@ -201,6 +203,8 @@ class CommonOperatorBuilder FINAL : public ZoneObject {
   const Operator* Call(const CallDescriptor* descriptor);
   const Operator* Projection(size_t index);
 
+  const Operator* ResizeMergeOrPhi(const Operator* op, int size);

[Benedikt Meurer, 2015/01/16 17:55:36]

Can you move this into loop-peeling.cc? I don't think there will be any uses
outside of that, and it's not really something that the builder should be
concerned with.

[titzer, 2015/01/19 09:47:12]

I want to convert the control reducer and the graph builder to use it sometime
in the near future.

[Benedikt Meurer, 2015/01/19 17:47:28]

That may introduce another use for that, in which case we can hoist it into the
builder. But please no premature generalization at this point, so please move it
to loop-peeling.cc for now.

+
  private:
   Zone* zone() const { return zone_; }