[optimizing compiler] Add div-int and exception handling.

- for backends: arm, x86, x86_64
- fixed a register allocator bug: the request for a fixed register for
the first input was ignored if the output was kSameAsFirstInput
- added divide by zero exception
- more tests
- shuffle around some code in the builder to reduce the number of lines
of code for a single function.

Change-Id: Id3a515e02bfbc66cd9d16cb9746f7551bdab3d42

1 files changed, 1 insertions, 0 deletions

diff --git a/compiler/optimizing/prepare_for_register_allocation.h b/compiler/optimizing/prepare_for_register_allocation.h
index 3e63ecb..0fdb65f 100644
--- a/compiler/optimizing/prepare_for_register_allocation.h
+++ b/compiler/optimizing/prepare_for_register_allocation.h
@@ -34,6 +34,7 @@ class PrepareForRegisterAllocation : public HGraphDelegateVisitor {
 
  private:
   virtual void VisitNullCheck(HNullCheck* check) OVERRIDE;
+  virtual void VisitDivZeroCheck(HDivZeroCheck* check) OVERRIDE;
   virtual void VisitBoundsCheck(HBoundsCheck* check) OVERRIDE;
   virtual void VisitClinitCheck(HClinitCheck* check) OVERRIDE;
   virtual void VisitCondition(HCondition* condition) OVERRIDE;