| ed0fe6c2f310f8c2cc28c35c2b473d8de36db8a4 |
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14-Apr-2011 |
Jesse Wilson <jessewilson@google.com> |
Bare-bones dex code generator.
This is functional but incomplete. In particular, the following
are still coming:
- instructions for cast/instanceof/arrays/float comparison/try/catch
- debug information
- annotations
The API is also incomplete. When this is done I'm going to remove
the type parameters to see if that's a net win. I suspect it will
be because generics currently hurt the ability to do assignments
between unknown types - you can't currently assign from Label<?> to
Label<?>, for example.
I'm anticipating changes to the way Code instances are created.
In the current API these are created without an attached method and
later attached to a method with Method.declare(). This doesn't work
very well, particularly since the code blocks don't know how many
parameters they take, whether they're static, or what their return
type is. I'm tempted to make declare() return a writable Code instance,
or to simply combine the Code and Method classes.
This code can benefit from more error detection. It's currently quite
easy to do bad things with labels: use them on the wrong Code instance,
reuse them, don't use them, etc. Better error checking is due here.
Change-Id: I4fe20552f2c571e41bedba6ff9db6686688d97ee
http://code.google.com/p/android/issues/detail?id=6322
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| 38b61748553bd387bc36b6bd82a8667b6c5f5934 |
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24-Mar-2011 |
jeffhao <jeffhao@google.com> |
Various dx fixes to make it preserve locals and debug info.
The SCCP pass checks if a register has associated local info before
attepting to prune branches or replace values with constants. Also, the
register allocator reserves a register for each local in a method. This
could be later improved by only reserving registers for the lengths of
their lifetimes as specified by the local info table.
Change-Id: I654ac014a9aac530f1db0db7d5cdef7535ff49bf
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| e1c3a8e2203881759efec3538cc654937de1d817 |
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10-Feb-2011 |
jeffhao <jeffhao@google.com> |
Added support for integer division to SCCP.
Division generates a result that must be fetched with a
move-result-pseudo instruction. SCCP originally had no way of tying the
division with the result it generates. This change should allow proper
constant propagation when division of integers is involved.
Change-Id: Ib7c5d2dd26eea3ab6545b613a540f0161a8e1642
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| b75d1ca580c6a6c7ebdc813dff2855205063fc46 |
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08-Feb-2011 |
jeffhao <jeffhao@google.com> |
SCCP propagates more constants and prunes unexecuted paths from branches.
The SCCP pass now more aggressively propagates constant values through
the code. Combined with changes to the LiteralOpUpgrader, instructions
with known constant results will be replaced with a simple const
instruction.
In addition, the SCCP pass can now find branches with constant conditions
and remove the branch path that never ends up being executed. Because of
the way finally blocks end up being replicated, this tends to prune away
error handling when no exception occurs, and hard code error handling
when an exception happens.
Change-Id: I6f3330151ec387c8a1e7ce098ff6cdb8d0ce5606
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| de75089fb7216d19e9c22cce4dc62a49513477d3 |
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09-Jun-2010 |
Carl Shapiro <cshapiro@google.com> |
Remove trailing whitespace.
Change-Id: I95534bb2b88eaf48f2329282041118cd034c812b
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| 72e93344b4d1ffc71e9c832ec23de0657e5b04a5 |
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13-Nov-2009 |
Jean-Baptiste Queru <jbq@google.com> |
eclair snapshot
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| 99409883d9c4c0ffb49b070ce307bb33a9dfe9f1 |
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19-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import //branches/master/...@140412
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| f6c387128427e121477c1b32ad35cdcaa5101ba3 |
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04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
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| f72d5de56a522ac3be03873bdde26f23a5eeeb3c |
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04-Mar-2009 |
The Android Open Source Project <initial-contribution@android.com> |
auto import from //depot/cupcake/@135843
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| 2ad60cfc28e14ee8f0bb038720836a4696c478ad |
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21-Oct-2008 |
The Android Open Source Project <initial-contribution@android.com> |
Initial Contribution
|