Optionally disable type warning (rust-lang#437)

Author: wsmoses

enzyme/Enzyme/TypeAnalysis/TypeTree.cpp

@@ -42,6 +42,9 @@ extern "C" {
 llvm::cl::opt<int> MaxTypeOffset("enzyme-max-type-offset", cl::init(500),
                                  cl::Hidden,
                                  cl::desc("Maximum type tree offset"));
+llvm::cl::opt<bool> EnzymeTypeWarning("enzyme-type-warning", cl::init(true),
+                                      cl::Hidden,
+                                      cl::desc("Print Type Depth Warning"));
 }
 
 // TODO keep type information that is striated
@@ -117,4 +120,4 @@ TypeTree TypeTree::KeepForCast(const llvm::DataLayout &DL, llvm::Type *From,
     }
   }
   return Result;
-}
+}

enzyme/Enzyme/TypeAnalysis/TypeTree.h

@@ -44,6 +44,7 @@
 /// Maximum offset for type trees to keep
 extern "C" {
 extern llvm::cl::opt<int> MaxTypeOffset;
+extern llvm::cl::opt<bool> EnzymeTypeWarning;
 }
 
 /// Helper function to print a vector of ints to a string
@@ -277,9 +278,10 @@ class TypeTree : public std::enable_shared_from_this<TypeTree> {
       }
     }
     if (Seq.size() > 6) {
-      llvm::errs() << "not handling more than 6 pointer lookups deep dt:"
-                   << str() << " adding v: " << to_string(Seq) << ": "
-                   << CT.str() << "\n";
+      if (EnzymeTypeWarning)
+        llvm::errs() << "not handling more than 6 pointer lookups deep dt:"
+                     << str() << " adding v: " << to_string(Seq) << ": "
+                     << CT.str() << "\n";
       return changed;
     }