Subzero: Catch addition patterns for Index in Address Optimizer

Catch addition patterns for Index in Address Optimization

  Index is Index=Var+Const ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Const+Var ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Var-Const ==>
    set Index=Var, Offset-=(Const<<Shift)
BUG=none
R=stichnot@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=2e4b960b20e6ed2ad9453657fe8d34d0e7fd933c

[manasijm, 2016-06-21 01:06:59]

manasijm@google.com changed reviewers:
+ eholk@chromium.org, jpp@chromium.org, kschimpf@google.com,
stichnot@chromium.org

[Jim Stichnoth, 2016-06-21 21:16:43]

lgtm

[manasijm, 2016-06-21 21:22:46]

Description was changed from

==========
Catch addition patterns for Index in Address Optimization

  Index is Index=Var+Const ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Const+Var ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Var-Const ==>
    set Index=Var, Offset-=(Const<<Shift)
BUG=none
==========

to

==========
Catch addition patterns for Index in Address Optimization

  Index is Index=Var+Const ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Const+Var ==>
    set Index=Var, Offset+=(Const<<Shift)
  Index is Index=Var-Const ==>
    set Index=Var, Offset-=(Const<<Shift)
BUG=none
R=stichnot@chromium.org

Committed:
https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a...
==========

[manasijm, 2016-06-21 21:22:48]

Committed patchset #4 (id:60001) manually as
2e4b960b20e6ed2ad9453657fe8d34d0e7fd933c (presubmit successful).