added basic dataflow analysis to skslc

src/sksl/SkSLSPIRVCodeGenerator.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
  
 #ifndef SKSL_SPIRVCODEGENERATOR
 #define SKSL_SPIRVCODEGENERATOR
 
@@ skipping 16 matching lines @@
 #include "ir/SkSLFunctionCall.h"
 #include "ir/SkSLFunctionDeclaration.h"
 #include "ir/SkSLFunctionDefinition.h"
 #include "ir/SkSLPrefixExpression.h"
 #include "ir/SkSLPostfixExpression.h"
 #include "ir/SkSLProgramElement.h"
 #include "ir/SkSLReturnStatement.h"
 #include "ir/SkSLStatement.h"
 #include "ir/SkSLSwizzle.h"
 #include "ir/SkSLTernaryExpression.h"
-#include "ir/SkSLVarDeclaration.h"
-#include "ir/SkSLVarDeclarationStatement.h"
+#include "ir/SkSLVarDeclarations.h"
+#include "ir/SkSLVarDeclarationsStatement.h"
 #include "ir/SkSLVariableReference.h"
 #include "spirv.h"
 
 namespace SkSL {
 
 #define kLast_Capability SpvCapabilityMultiViewport
 
 /**
  * Converts a Program into a SPIR-V binary.
  */
@@ skipping 209 matching lines @@
     std::stack<SpvId> fBreakTarget;
     std::stack<SpvId> fContinueTarget;
 
     friend class PointerLValue;
     friend class SwizzleLValue;
 };
 
 }
 
 #endif