Revert of Temporarily revert just Multiply to see if that's the source of NEON diffs.

src/core/SkXfermode.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkXfermode.h"
 #include "SkXfermode_opts_SSE2.h"
@@ skipping 1475 matching lines @@
     }
 
 #if defined(SK_4PX_XFERMODES_ARE_FAST) && !defined(SK_PREFER_LEGACY_FLOAT_XFERMODES)
     switch (mode) {
         case SkXfermode::kSrcATop_Mode:  return SkT4pxXfermode<SrcATop4f>::Create(rec);
         case SkXfermode::kDstATop_Mode:  return SkT4pxXfermode<DstATop4f>::Create(rec);
         case SkXfermode::kXor_Mode:      return SkT4pxXfermode<Xor4f>::Create(rec);
         case SkXfermode::kPlus_Mode:     return SkT4pxXfermode<Plus4f>::Create(rec);
         case SkXfermode::kModulate_Mode: return SkT4pxXfermode<Modulate4f>::Create(rec);
         case SkXfermode::kScreen_Mode:   return SkT4pxXfermode<Screen4f>::Create(rec);
-        // Temporarily reverted to see if this is what's causing NEON diffs.
-        // If not, will try Xor, DstATop, then SrcATop in that order.
-        //case SkXfermode::kMultiply_Mode: return SkT4pxXfermode<Multiply4f>::Create(rec);
+        case SkXfermode::kMultiply_Mode: return SkT4pxXfermode<Multiply4f>::Create(rec);
         default: break;
     }
 #endif
 
 #if defined(SK_4F_XFERMODES_ARE_FAST)
     switch (mode) {
         case SkXfermode::kSrcATop_Mode:    return SkT4fXfermode<SrcATop4f>::Create(rec);
         case SkXfermode::kDstATop_Mode:    return SkT4fXfermode<DstATop4f>::Create(rec);
         case SkXfermode::kXor_Mode:        return SkT4fXfermode<Xor4f>::Create(rec);
         case SkXfermode::kPlus_Mode:       return SkT4fXfermode<Plus4f>::Create(rec);
@@ skipping 299 matching lines @@
         } else {
             proc16 = rec.fProc16_General;
         }
     }
     return proc16;
 }
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermode)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkProcCoeffXfermode)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END