AuroraMiddleware/v8
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0925be14a2
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27 Commits

Author SHA1 Message Date
Benedikt Meurer
0925be14a2 [turbofan] Further reduction of Word32And with Int32Add. 
- (y * (K << L) + x) & (-1 << L) => (x & (-1 << L)) + y * (K << L)
- (x + y * (K << L)) & (-1 << L) => (x & (-1 << L)) + y * (K << L)

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/811293002

Cr-Commit-Position: refs/heads/master@{#25875}
 2014-12-18 08:42:57 +00:00
Benedikt Meurer
a7d8724188 [turbofan] Improve reduction of Word32And and Int32Add. 
TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/816433002

Cr-Commit-Position: refs/heads/master@{#25863}
 2014-12-17 11:34:39 +00:00
bmeurer
5a8be47d21 Revert of [turbofan] Correctify TruncateFloat64ToInt32 reduction in MachineOperatorReducer. (patchset #1 id:1 of https://codereview.chromium.org/801263002/) 
Reason for revert:
Can cause reduce cycles, needs more investigation

Original issue's description:
> [turbofan] Correctify TruncateFloat64ToInt32 reduction in MachineOperatorReducer.
>
> TEST=unittests
> R=svenpanne@chromium.org
>
> Committed: 6e7ceee4d0

TBR=svenpanne@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/794473003

Cr-Commit-Position: refs/heads/master@{#25859}
 2014-12-17 09:51:17 +00:00
Benedikt Meurer
6e7ceee4d0 [turbofan] Correctify TruncateFloat64ToInt32 reduction in MachineOperatorReducer. 
TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/801263002

Cr-Commit-Position: refs/heads/master@{#25812}
 2014-12-15 07:46:21 +00:00
Benedikt Meurer
2983d84e5c [turbofan] Combine additional Word32And with Int32Add and negative power of two. 
- (y << L + x) & (-1 << L) => (x & (-1 << L)) + y << L
- (x + y << L) & (-1 << L) => (x & (-1 << L)) + y << L

TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/758603003

Cr-Commit-Position: refs/heads/master@{#25627}
 2014-12-03 07:35:03 +00:00
Benedikt Meurer
c516d4f094 [turbofan] Add checked load/store operators. 
TEST=mjsunit,cctest,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/763963002

Cr-Commit-Position: refs/heads/master@{#25591}
 2014-12-02 04:49:11 +00:00
rodolph.perfetta
55614cfe69 [turbofan] Recognize rotate right. 
Extended the rotate left detection code.

BUG=

Review URL: https://codereview.chromium.org/760523004

Cr-Commit-Position: refs/heads/master@{#25517}
 2014-11-26 11:49:43 +00:00
Benedikt Meurer
94f5b78b96 [turbofan] Combine Word32And with Int32Add and negative power of two. 
TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/749233002

Cr-Commit-Position: refs/heads/master@{#25479}
 2014-11-24 12:30:30 +00:00
Rodolph Perfetta
481772acdd [turbofan] remove redundant '& 0x1F' for shifts. 
JavaScript shifts perform an implicit '& 0x1F' on their right operand, this
patch removes it when the underlying architecture already does it.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/732103002

Cr-Commit-Position: refs/heads/master@{#25438}
 2014-11-20 13:09:26 +00:00
Benedikt Meurer
048d37017d [turbofan] Avoid useless sign extension after sign extended load. 
TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/735623002

Cr-Commit-Position: refs/heads/master@{#25388}
 2014-11-18 09:28:11 +00:00
titzer@chromium.org
b9886ae9ff Fix bugs in simplified lowering relating to int32/uint32 signs. 
Lowering of NumberToUint32 and NumberToInt32 was not correctly accounting for the sign of the input and the sign of the output, emitting the wrong representation changes.

Along the way, I've found cases where MachineOperatorBuilder would break if fed a machine type for loads or stores that was not cached, requiring MachineOperatorBuilder to take zone to allocate operators for these cases.

R=bmeurer@chromium.org, jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/714613002

Cr-Commit-Position: refs/heads/master@{#25247}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-10 14:28:42 +00:00
bmeurer@chromium.org
35cc4af769 [turbofan] Push TruncateFloat64ToInt32 into phis. 
TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/707683003

Cr-Commit-Position: refs/heads/master@{#25189}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25189 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-06 12:38:47 +00:00
bmeurer@chromium.org
8798c410e1 [turbofan] Turn various diamonds into selects. 
TEST=cctest/test-changes-lowering,mjsunit/asm,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/704463004

Cr-Commit-Position: refs/heads/master@{#25180}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25180 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-06 09:10:32 +00:00
bmeurer@chromium.org
881cece8de [turbofan] Transform x * -1.0 to -0.0 - x. 
TEST=msjunit/asm,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/683753004

Cr-Commit-Position: refs/heads/master@{#25176}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25176 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-06 06:13:46 +00:00
bmeurer@chromium.org
18e18d21f1 [turbofan] Strip useless sign-extension for store8/store16. 
TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/698963002

Cr-Commit-Position: refs/heads/master@{#25091}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-04 07:35:49 +00:00
bmeurer@chromium.org
498920f91c [turbofan] Also optimize unsigned division by constant. 
TEST=cctest,mjsunit,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/697663003

Cr-Commit-Position: refs/heads/master@{#25061}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-11-03 10:05:46 +00:00
titzer@chromium.org
bd5c9834b6 Fix bug in optimization of Uint32LessThan. 
R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/689883003

Cr-Commit-Position: refs/heads/master@{#25023}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25023 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-30 15:52:47 +00:00
bmeurer@chromium.org
3a089bf9a0 [turbofan] Reduce (x & K) & K to x & K. 
TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/685713002

Cr-Commit-Position: refs/heads/master@{#24931}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24931 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-28 11:57:44 +00:00
bmeurer@chromium.org
f535763763 [turbofan] Implement the correct semantics for integer division/modulus. 
Also fix the sdiv/udiv instructions on ARM as a nice side effect.

TEST=cctest,unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/677483005

Cr-Commit-Position: refs/heads/master@{#24888}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24888 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-26 12:50:46 +00:00
bmeurer@chromium.org
1efc572fe7 [turbofan] Reduce ~~x to x. 
TEST=unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/666723005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-21 12:24:01 +00:00
bmeurer@chromium.org
cc60a45d78 [turbofan] Move node matchers to separate file. 
TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/639293006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24729 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-20 11:26:23 +00:00
rossberg@chromium.org
0e16150d33 Better typing and type verification 
- Extend verifier to check types of JS and Simplified nodes.
- Untyped nodes now contain NULL as types, enforcing hard failure.
- Typer immediately installs itself as a decorator; remove explicit decorator installation.
- Decorator eagerly types all nodes that have typed inputs
  (subsumes typing of constant cache, removing its typing
  side-channel and various spurious dependencies on the typer).
- Cut down typer interface to prevent inconsistently typed graphs.
- Remove verification from start, since it caused too much trouble
  with semi-wellformed nodes.
- Fix a couple of bugs on the way that got uncovered.

To do: verifying machine operators. Also, various conditions in the
verifier are currently commented out, because they don't yet hold.

BUG=
R=jarin@chromium.org,titzer@chromium.org

Review URL: https://codereview.chromium.org/658543002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24626 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-15 11:38:04 +00:00
bmeurer@chromium.org
81877a6440 [turbofan] Optimize division/modulus by constant. 
TEST=cctest,mjsunit,unittests
R=dcarney@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/654833002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24595 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-14 11:57:06 +00:00
bmeurer@chromium.org
5c1f7b5aa1 [turbofan] Optimize Int32Mod by power-of-two. 
TEST=mjsunit/asm/int32-tmod,unittests
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/649083005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24554 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-13 11:09:32 +00:00
bmeurer@chromium.org
059e4c206e [turbofan] Optimize Uint32LessThan with Word32Sar. 
TEST=unittests
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/648663002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24520 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-10 10:23:04 +00:00
bmeurer@chromium.org
c95ba9bd04 [turbofan] Eliminate redundant masking operations for word8/word16 stores. 
There's no need to apply 0xff when storing 8-bit values or 0xffff when
storing 16-bit values.

TEST=unittests
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/642033002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24492 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-09 12:20:45 +00:00
bmeurer@chromium.org
bfd37ab267 Move unit tests to test/unittests. 
As per discussion on the V8 team, this is the place we want them to live,
not following the Chrome Style Guide for this.

BUG=v8:3489
LOG=y
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/615393002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-10-01 08:34:25 +00:00