Cleanup deoptimization code to make it architecture independent (in progress).

runtime/vm/code_patcher_arm.cc

Index: runtime/vm/code_patcher_arm.cc
===================================================================
--- runtime/vm/code_patcher_arm.cc	(revision 22345)
+++ runtime/vm/code_patcher_arm.cc	(working copy)
@@ -39,7 +39,9 @@
 
 
 void CodePatcher::InsertCallAt(uword start, uword target) {
-  UNIMPLEMENTED();
+  // The inserted call should not overlap the lazy deopt jump code.
+  ASSERT(start + CallPattern::kFixedLengthInBytes <= target);

[srdjan, 2013/05/03 17:16:18]

Currently there is always a patch jump before the lazy target, so that assert
will probably not help as the call should not overlap the jump neither. It may
help in future, if the code gets rearranged

[regis, 2013/05/03 18:34:12]

Agreed. It will not catch all issues.

+  CallPattern::InsertAt(start, target);
 }