Initial Subzero WASM prototype.

src/IceCfg.h

 //===- subzero/src/IceCfg.h - Control flow graph ----------------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 238 matching lines @@
   /// Deallocate data that was allocated via allocate<T>().
   template <typename T> void deallocate(T *Object) {
     Allocator->Deallocate(Object);
   }
 
   /// Deallocate data that was allocated via allocateArrayOf<T>().
   template <typename T> void deallocateArrayOf(T *Array) {
     Allocator->Deallocate(Array);
   }
 
+  /// Update Phi labels with InEdges.
+  ///
+  /// The WASM translator cannot always determine the right incoming edge for a
+  /// value due to the CFG being built incrementally. The fixPhiNodes pass fills
+  /// in the correct information once everything is known.
+  void fixPhiNodes();
+
 private:
   friend class CfgAllocatorTraits; // for Allocator access.
 
   Cfg(GlobalContext *Ctx, uint32_t SequenceNumber);
 
   /// Adds a call to the ProfileSummary runtime function as the first
   /// instruction in this CFG's entry block.
   void addCallToProfileSummary();
 
   /// Iterates over the basic blocks in this CFG, adding profiling code to each
@@ skipping 75 matching lines @@
   using OwnerType = Cfg;
   static StringPool *getStrings(const OwnerType *PoolOwner) {
     return PoolOwner->getVarStrings();
   }
 };
 using VariableString = StringID<VariableStringPoolTraits>;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECFG_H