[WIP] Supporting arm_neon_optional flag for blink platform.

Source/platform/graphics/filters/FEComposite.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 12 matching lines @@
  */
 
 #include "config.h"
 
 #include "platform/graphics/filters/FEComposite.h"
 
 #include "SkArithmeticMode.h"
 #include "SkXfermodeImageFilter.h"
 
 #include "platform/graphics/GraphicsContext.h"
+#if HAVE(ARM_NEON_INTRINSICS)
 #include "platform/graphics/cpu/arm/filters/FECompositeArithmeticNEON.h"
+#endif
 #include "platform/graphics/filters/SkiaImageFilterBuilder.h"
 #include "platform/text/TextStream.h"
 #include "third_party/skia/include/core/SkDevice.h"
 
 #include "wtf/Uint8ClampedArray.h"
 
 namespace blink {
 
 FEComposite::FEComposite(Filter* filter, const CompositeOperationType& type, float k1, float k2, float k3, float k4)
     : FilterEffect(filter)
@@ skipping 172 matching lines @@
             computeArithmeticPixels<0, 0>(source, destination, pixelArrayLength, k1, k2, k3, k4);
     }
 }
 
 inline void FEComposite::platformArithmeticSoftware(Uint8ClampedArray* source, Uint8ClampedArray* destination,
     float k1, float k2, float k3, float k4)
 {
     int length = source->length();
     ASSERT(length == static_cast<int>(destination->length()));
     // The selection here eventually should happen dynamically.
-#if HAVE(ARM_NEON_INTRINSICS)
-    ASSERT(!(length & 0x3));
-    platformArithmeticNeon(source->data(), destination->data(), length, k1, k2, k3, k4);
-#else
-    arithmeticSoftware(source->data(), destination->data(), length, k1, k2, k3, k4);
-#endif
+    WTF_CPU_ARM_NEON_WRAP(arithmeticSoftware)(source->data(), destination->data(), length, k1, k2, k3, k4);
 }
 
 FloatRect FEComposite::determineAbsolutePaintRect(const FloatRect& originalRequestedRect)
 {
     FloatRect requestedRect = originalRequestedRect;
     if (clipsToBounds())
         requestedRect.intersect(maxEffectRect());
 
     // We may be called multiple times if result is used more than once. Return
     // quickly if nothing new is required.
@@ skipping 192 matching lines @@
     ts << " operation=\"" << m_type << "\"";
     if (m_type == FECOMPOSITE_OPERATOR_ARITHMETIC)
         ts << " k1=\"" << m_k1 << "\" k2=\"" << m_k2 << "\" k3=\"" << m_k3 << "\" k4=\"" << m_k4 << "\"";
     ts << "]\n";
     inputEffect(0)->externalRepresentation(ts, indent + 1);
     inputEffect(1)->externalRepresentation(ts, indent + 1);
     return ts;
 }
 
 } // namespace blink