Experimental: begin using the register allocator for switch statements...

src/virtual-frame-ia32.cc

Index: src/virtual-frame-ia32.cc
===================================================================
--- src/virtual-frame-ia32.cc	(revision 1027)
+++ src/virtual-frame-ia32.cc	(working copy)
@@ -727,15 +727,14 @@
     ASSERT(temp.is_valid());
     FrameElement new_element
         = FrameElement::RegisterElement(temp.reg(),
-                                        FrameElement::NOT_SYNCED);
+                                        FrameElement::SYNCED);
     Use(temp.reg());
     elements_[index] = new_element;
+    __ mov(temp.reg(), Operand(ebp, fp_relative(index)));
+
     Use(temp.reg());
+    new_element.clear_sync();
     elements_.Add(new_element);
-
-    // Finally, move the element at the index into its new location.
-    elements_[index].set_sync();
-    __ mov(temp.reg(), Operand(ebp, fp_relative(index)));
   } else {
     // For constants and registers, add an (unsynced) copy of the element to
     // the top of the frame.
@@ -898,9 +897,6 @@
 }
 
 
-void VirtualFrame::Drop() { Drop(1); }
-
-
 Result VirtualFrame::Pop() {
   FrameElement popped = elements_.RemoveLast();
   bool pop_needed = (stack_pointer_ == elements_.length());