Remove spills from complex assignments. Some compound assignments now...

src/virtual-frame-ia32.cc

Index: src/virtual-frame-ia32.cc
===================================================================
--- src/virtual-frame-ia32.cc	(revision 1192)
+++ src/virtual-frame-ia32.cc	(working copy)
@@ -170,9 +170,11 @@
 // Spill an element, making its type be MEMORY.
 // Does not decrement usage counts, if element is a register.
 void VirtualFrame::RawSpillElementAt(int index) {
-  SyncElementAt(index);
-  // The element is now in memory.
-  elements_[index] = FrameElement::MemoryElement();
+  if (elements_[index].is_valid()) {

[Kevin Millikin (Chromium), 2009/02/03 09:48:55]

I think there should also be an early exit in RawSyncElementAt for invalid
elements.

+    SyncElementAt(index);
+    // The element is now in memory.
+    elements_[index] = FrameElement::MemoryElement();
+  }
 }