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113 Commits

Author SHA1 Message Date
kmillikin@chromium.org
fa5bc7ea0b Streamline CodeGenerator::Comparison in the IA32 code generator. When 
doing constant folding, handle only the cases that actually arise.
This avoids some complicated logic, some extra comparisons, and fixes
issue 247:

http://code.google.com/p/v8/issues/detail?id=247

Review URL: http://codereview.chromium.org/40023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1410 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-03-04 08:50:38 +00:00
kasperl@chromium.org
9f78714717 Disable the compilation caching for scripts to make it 
possible to start generating code specific to a global
object. We should start caching scripts but make the
mechanism local to a specific global context inspired
by the way we handle eval-caching. 
Review URL: http://codereview.chromium.org/40007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-03-03 13:35:05 +00:00
kmillikin@chromium.org
4678719d24 Simplify the way that we compile slow-case switch statements. Compile 
all the reachable tests first, and then all the reachable bodies.
Review URL: http://codereview.chromium.org/28296

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1397 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-03-02 11:30:17 +00:00
kmillikin@chromium.org
f4735247cf Merge from experimental code generator branch to bleeding edge. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1389 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-27 13:00:32 +00:00
olehougaard
e3c0ae62af Go into slow case when encountering object initialization on the top level to optimize performance of code like 
C.prototype.x = ...;
C.prototype.y = ...;
...
C.prototype.z = ...;
Review URL: http://codereview.chromium.org/27128

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1372 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-26 07:54:22 +00:00
kasperl@chromium.org
1e42e70021 Use SSE3 instructions - if available - for faster To(U)Int32 
conversion in bit operation stubs. Disable serialization
support by default to allow us to use SSE3 instructions and
faster write barrier code when running without snapshot.
Review URL: http://codereview.chromium.org/27046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1364 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-25 14:57:46 +00:00
ager@chromium.org
0c7af39737 Speed up access to global variables from eval scopes. Traverse the 
surrounding context to figure out if the variable could be global.  If
the variable could be global we check context extension objects at
runtime and use a global LoadIC if no variables have been introduced
by eval.

Fix crash bug when loading function arguments from inside eval.  The 
shadowed variable in the DYNAMIC_LOCAL case does not rewrite to a slot in 
that case.

Review URL: http://codereview.chromium.org/28027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-24 13:11:53 +00:00
kasperl@chromium.org
0e1819d0b8 Revert 1330:1331. 
TBR=ager@chromium.org
Review URL: http://codereview.chromium.org/24026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1332 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-20 17:42:04 +00:00
ager@chromium.org
b6a1cd6787 Simplify non-smi bit operation optimization. The explicit range 
checks are not needed.  If we fail to store the float as a 64-bit
integer, we just go to the runtime system.  The only extra case in
which we enter the runtime system is for NaN which should not matter.

Review URL: http://codereview.chromium.org/21539

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1331 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-20 14:23:54 +00:00
kasperl@chromium.org
3afe470026 Improve generated code for non-smi bit operations by 
converting the operands to 32-bit ints directly in the 
machine code stub instead of just checking if the heap 
numbers really just represent 32-bit ints and going
through the runtime system in that case.
Review URL: http://codereview.chromium.org/21536

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1330 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-20 13:30:32 +00:00
ager@chromium.org
195753ff7b Commit of eval changes left out because they were stuck in another changelist. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-19 07:22:53 +00:00
ager@chromium.org
cafe25f258 ARM side of load optimization in the presence of eval. 
Review URL: http://codereview.chromium.org/20453

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-18 13:54:13 +00:00
ager@chromium.org
a09832ab76 Optimize loads from variables that might be shadowed by variables 
introduced by eval.

In the cases where calls to eval have not introduced any variables, we
do not need to perform a runtime call.  Instead, we verify that the
context extension objects have not been created and perform a direct
load.

Not implemented for ARM yet and the scope resolution code could use
some better abstractions.  I'd like to do that in a separate
changelist.
Review URL: http://codereview.chromium.org/20419

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-18 13:04:28 +00:00
ager@chromium.org
d81fad1766 Fix debugger function that treated retry-after-gc failure as an 
exception.

Minor indentation cleanup.
Review URL: http://codereview.chromium.org/20404

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-16 13:31:13 +00:00
lrn@chromium.org
3e2712e018 Lots of small optimizations, and one that is measurable (speeds up celtickane-array signficantly). 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1276 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-16 10:18:34 +00:00
kmillikin@chromium.org
46023fb742 Fix for off-by-one when initializing a constant or function 
declaration that was not a slot.
Review URL: http://codereview.chromium.org/19745

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1203 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-02-02 12:05:13 +00:00
whessev8
78de0cef11 Fixes two lint errors in codegen-ia32.cc. 
Review URL: http://codereview.chromium.org/18743

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1146 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-26 10:32:39 +00:00
whessev8
8faf0da7b6 Revert change to Smi check that was a performance regression. 
Review URL: http://codereview.chromium.org/18582

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1143 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-26 09:15:48 +00:00
whessev8
29d28e7cc9 Optimizes an assembly-language conversion from int to Smi in codegen. 
Review URL: http://codereview.chromium.org/18551

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1137 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-23 13:58:49 +00:00
whessev8
ffd1b25cfb Optimizes check for Smi range in the code generator. 
The check whether a 32-bit signed integer is in the Smi
range is now Sign bit( value + 0x40000000 ) == 0,
done with a single cmp instruction.
Review URL: http://codereview.chromium.org/18710

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1134 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-23 13:06:15 +00:00
kmillikin@chromium.org
74a17e90fc Fix incorrect issue number. 
Review URL: http://codereview.chromium.org/18493

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1124 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-22 12:52:39 +00:00
ager@chromium.org
47d1298236 Change the handling of catch blocks to use context extension objects 
instead of normal JSObjects.

This ensures that __proto__ and accessors on the Object prototype do
not interfere with catch scopes.  Also, it fixes the bug that catch
variables were not DontDelete (issue 74).

Next step is to create special lookup routines for context extension
objects and remove the special handling of context extension objects
from the general javascript object lookup routines.
Review URL: http://codereview.chromium.org/18143

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1091 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-16 09:42:08 +00:00
christian.plesner.hansen@gmail.com
4e78736900 Fixed build with no ENABLE_LOGGING_AND_PROFILING 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-07 14:24:08 +00:00
christian.plesner.hansen@gmail.com
afcc36a417 Added runtime call to the logging infrastructure. Made some changes 
to the way regexps are being logged.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1028 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2009-01-06 13:24:52 +00:00
ager@chromium.org
5f1ef9cbf8 Update comment and add assert. 
Fix typo where underscore is used instead of a dash.
Review URL: http://codereview.chromium.org/16238

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1019 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-23 08:58:56 +00:00
ager@chromium.org
3f383346aa Inline array loads in loops directly in the code instead of always 
calling a stub.  The map to check against is unknown when generating
the code, so we patch the map check in the IC initialization code.

Loop nesting is currently not tracked on ARM.  I'll file feature
request bug reports for implementing this on ARM and add the number to
the TODOs before I commit.
Review URL: http://codereview.chromium.org/16409

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1015 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-22 12:56:32 +00:00
olehougaard
392e6f849b Fixing a subtle bug in receiver resolution when a thrown and caught function is called from a catch-block. 
Second attempt - now with better memory efficiency.
Review URL: http://codereview.chromium.org/14834

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@999 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-18 11:28:13 +00:00
sgjesse@chromium.org
e116a24896 Removed some unused code to make Linux builders happy. 
TBR=ager
Review URL: http://codereview.chromium.org/14189

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@986 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-17 09:02:31 +00:00
sgjesse@chromium.org
b3dd6b686a Refactored the recording of source position in the generated code. The code generator now has two methods 
void CodeForStatement(Node* node)
  void CodeForSourcePosition(int pos)

The first is used to indicate that code is about to be generated for the given statement and the second is used to indicate that code is about to be generated for the given source position.

Added position information for some statements which was missing whem.

Updated the code generator for ARM to emit source position the same way as for IA-32.

Added an assert to ensure that deferred code stubs will always have a source source position as if it has not it will take whatever source position before which makes no sense.

The passing test on ARM has only been tested using the simulator.
Review URL: http://codereview.chromium.org/14170

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@985 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-17 08:45:42 +00:00
olehougaard
f7168008ea Introduced a TempAssign utility because I just couldn't watch this anymore. YMMV. 
Review URL: http://codereview.chromium.org/14422

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@976 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-15 08:55:35 +00:00
kmillikin@chromium.org
6ef835e5d2 A recursive call to the code generator could (conceivably) clobber any 
register.  Generate code to evaluate both arguments of FastCharCodeAt
before popping either from the stack.
Review URL: http://codereview.chromium.org/13706

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@958 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-12-10 13:49:19 +00:00
olehougaard
2b72eeedfb Change implementation of eval to make an exact distinction between direct eval and aliased eval. 
Review URL: http://codereview.chromium.org/12673

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@860 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-27 13:55:06 +00:00
ager@chromium.org
95d1d40077 Revert r819, 821, and 822 which caused a big performance regression 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@823 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-21 15:01:41 +00:00
olehougaard
3877c91a19 Fixing the detection of aliased eval so that it is exact. 
Fixing the semantics of aliased eval so that it is conformant.
Review URL: http://codereview.chromium.org/11563

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@819 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-21 12:49:57 +00:00
kasperl@chromium.org
7940adb1ec Track loop nesting across function calls when the function 
is called through an IC the first time.
Review URL: http://codereview.chromium.org/10746

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@764 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-17 05:50:52 +00:00
kmillikin@chromium.org
45e88ce988 Minor cleanup of the code generators to reduce (eventual) register 
pressure and to avoid gratuitous merges in the CFG.  No real
performance impact is expected.
Review URL: http://codereview.chromium.org/10404

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@739 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-12 11:00:12 +00:00
deanm@chromium.org
8bea254650 Use shorter encoding for mov REG, IMM. Use Set() in two places to generate smaller code when the immediate is 0. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@728 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-11 06:10:07 +00:00
deanm@chromium.org
8ee441ea9f Use shorter SIB encoding. For example, the previous: 
8d044500000000 lea eax,[eax*2+0x0]
Will be encoded with the much shorter:
8d0400         lea eax,[eax+eax*1]

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-09 17:48:34 +00:00
kmillikin@chromium.org
6edea51f89 Reporting -1 as the size of an ILLEGAL reference which actually has 
size 0 was too cute.
Review URL: http://codereview.chromium.org/9689

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-07 08:58:23 +00:00
kmillikin@chromium.org
bdb896cc40 Emit pushes and pops through the virtual frame on ARM. Merging of 
frames is not yet handled.  The ARM code generator should be back in
line with the IA32 one.
Review URL: http://codereview.chromium.org/9182

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-07 08:21:07 +00:00
ager@chromium.org
439f3e6708 Do not put failures in handles. 
Assert in the Handle constructor that the object is not a failure.

I have run our own tests in debug mode and the WebKit layout tests in
debug mode and there are no regressions.
Review URL: http://codereview.chromium.org/9114

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@691 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-04 16:23:56 +00:00
lrn@chromium.org
4e3bbd8247 If a HeapNumber is the incoming value, it must be converted to Smi before 
checking. This is not done in a fast way.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-11-03 13:33:13 +00:00
kmillikin@chromium.org
ec3c4ced39 Reverted 671. 
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@673 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-31 13:18:52 +00:00
kmillikin@chromium.org
67ae89e417 Simplify the way we materialize boolean values that are not yet pushed 
on the stack frame.
Review URL: http://codereview.chromium.org/8764

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@671 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-31 11:55:06 +00:00
kasperl@chromium.org
a2be3b6f84 Make sure that allocations through CALL_HEAP_FUNCTION 
and runtime calls from JavaScript will always succeed
eventually if we have enough memory.
Review URL: http://codereview.chromium.org/8700

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@646 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-30 09:15:58 +00:00
iposva@chromium.org
156c1323e3 Fix out-of-date comment. 
TBR=ager

Review URL: http://codereview.chromium.org/8708

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@644 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-29 18:31:55 +00:00
kasperl@chromium.org
a26b3535de Allow three runtime call attempts before throwing an out of 
memory exception. Still needs work in Runtime_PerformGC to
make sure we'll allow future allocations.
Review URL: http://codereview.chromium.org/8873

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@638 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-29 12:16:34 +00:00
iposva@chromium.org
35939fd987 Track whether a node or variable are likely to be a Smi value. Propagate that 
knowledge in the AST and inline the Smi check into the generated code if it
is deemed high value (e.g. in loops).

Review URL: http://codereview.chromium.org/8835

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@630 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-28 22:33:00 +00:00
kasperl@chromium.org
2dcb4d2c59 Fix issue 120 by patching the on-stack receiver in the 
IC stubs for calls just before invoking the target
function instead of doing it before resolving the
function.
Review URL: http://codereview.chromium.org/8192

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@607 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-27 14:12:02 +00:00
erik.corry@gmail.com
0fc72f2b4e Serendipitously arrange the tags so that String.length() becomes a branch-free 
operation.  I have another version of this change that does not remove the
special inline caches for difference sized strings.  The other version is ever
so slightly faster, but the nice thing about this version is that it removes
253 lines of code.
Review URL: http://codereview.chromium.org/8187

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-10-27 12:39:34 +00:00