[deoptimizer] Fill the single precision registers in the deoptimizer entry stub.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 7b0c189e59fecb03235a8ee3b88e1ea614d29da1..7af72a165c79ee3c0a0018cf13a132bbd05d6e0c 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -816,6 +816,10 @@ class FrameDescription {
     return OFFSET_OF(FrameDescription, register_values_.double_registers_);
   }
 
+  static int float_registers_offset() {
+    return OFFSET_OF(FrameDescription, register_values_.float_registers_);
+  }
+
   static int frame_size_offset() {
     return offsetof(FrameDescription, frame_size_);
   }