History log of /art/runtime/arch/x86/quick_entrypoints_x86.S
Revision Date Author Comments
a048ca8e0ff6d0e79d070decf9fa2331e2d13824 08-Jun-2016 Nicolas Geoffray <ngeoffray@google.com> Fix FOUR_ARG_DOWNCALL assembly stubs on arm and x86.

They were creating a stack that the runtime did not understand.

bug:28348339

(cherry picked from commit 0f838aa279a296b5f14c231065bb2f96b02d9caf)

Change-Id: Iecaa274512b42ad76fccb48c11a0076d0292c240
fc6898769ae1ef91ec3e41c0a273401213cb82cd 26-Apr-2016 Andreas Gampe <agampe@google.com> ART: Log all monitor operations to systrace

Add a VLOG option ("-verbose:systrace-locks") to log all monitor
operations to systrace. This requires non-fastpath thread
entrypoints, and ATRACE tags for locking and unlocking.

Do a bit of cleanup to the entrypoint initialization to share
common setup.

Bug: 28423466
Change-Id: Ie67e4aa946ec15f8fcf8cb7134c5d3cff0119ab3
59028d90d51a800bcea8be354d77d7be924da3a0 29-Mar-2016 Goran Jakovljevic <Goran.Jakovljevic@imgtec.com> MIPS: Improving art_quick_imt_conflict_trampoline

This is fixing stub_test for MIPS32 and MIPS64. This is follow up
change for Ie74d1c77cf73d451a1142bdc5e3683f9f84bb4e7.

Change-Id: I3c53ef690aff49d7cf9ad3de3aaed9a3d2e1c6b9
796d63050a18f263b93ea34951a61deaecab3422 13-Mar-2016 Nicolas Geoffray <ngeoffray@google.com> Add an ImtConflictTable to better resolve IMT conflicts.

- Attach a ImtConflictTable to conflict runtime ArtMethod.
- Initially 0, a new one will be created at the first hit of
the conflict method.
- If the assembly code does not find a target method in the table,
we will create a new one again, copying the data from the previous
table and adding the new mapping.

Implemented for arm/arm64/x86/x64.

bug:27556801
bug:24769046

Change-Id: Ie74d1c77cf73d451a1142bdc5e3683f9f84bb4e7
10d4c08c0ea9df0a85a11e1c77974df24078c0ec 24-Feb-2016 Hiroshi Yamauchi <yamauchi@google.com> Assembly region TLAB allocation fast path for arm.

This is for the CC collector.

Share the common fast path code with the tlab fast path code.

Speedup (on N5):
BinaryTrees: 2291 -> 902 ms (-60%)
MemAllocTest: 2137 -> 1845 ms (-14%)

Bug: 9986565
Bug: 12687968

Change-Id: Ica63094ec2f85eaa4fd04d202a20090399275d85
f969a209c30e3af636342d2fb7851d82a2529bf7 09-Mar-2016 Roland Levillain <rpl@google.com> Fix and enable java.lang.StringFactory intrinsics.

The following intrinsics were not considered by the
intrinsics recognizer:
- StringNewStringFromBytes
- StringNewStringFromChars
- StringNewStringFromString
This CL enables them and add tests for them.

This CL also:
- Fixes the locations of the ARM64 & MIPS64
StringNewStringFromString intrinsics.
- Fixes the definitions of the FOUR_ARG_DOWNCALL macros on
ARM and x86, which are used to implement the
art_quick_alloc_string_from_bytes* runtime entry points.
- Fixes PC info (stack maps) recording in the
StringNewStringFromBytes, StringNewStringFromChars and
StringNewStringFromString ARM, ARM64 & MIPS64 intrinsics.

Bug: 27425743
Change-Id: I38c00d3f0b2e6b64f7d3fe9146743493bef9e45c
b331febbab8e916680faba722cc84b66b84218a3 05-Feb-2016 Nicolas Geoffray <ngeoffray@google.com> Revert "Revert "Implement on-stack replacement for arm/arm64/x86/x86_64.""

This reverts commit bd89a5c556324062b7d841843b039392e84cfaf4.

Change-Id: I08d190431520baa7fcec8fbdb444519f25ac8d44
bd89a5c556324062b7d841843b039392e84cfaf4 05-Feb-2016 David Brazdil <dbrazdil@google.com> Revert "Implement on-stack replacement for arm/arm64/x86/x86_64."

DCHECK whether loop headers are covered fails.

This reverts commit 891bc286963892ed96134ca1adb7822737af9710.

Change-Id: I0f9a90630b014b16d20ba1dfba31ce63e6648021
891bc286963892ed96134ca1adb7822737af9710 29-Jan-2016 Nicolas Geoffray <ngeoffray@google.com> Implement on-stack replacement for arm/arm64/x86/x86_64.

High-level overview:
- osr_method_threshold is used to know when to compile a method
in osr mode (-> treat all loops as irreducible).
- branch instructions in the compiler query whether they can
jump to an osr method.
- An osr entry point is found through the stack maps: if a stack
map is duplicated in the CodeInfo, it is an osr entry point.

Change-Id: Ifb39338cd281e2c7eccce67f4e18d46428be71e4
7c1559a06041c9c299d5ab514d54b2102f204a84 15-Dec-2015 Roland Levillain <rpl@google.com> x86 Baker's read barrier fast path implementation.

Introduce an x86 fast path implementation in Optimizing for
Baker's read barriers (for both heap reference loads and GC
root loads). The marking phase of the read barrier is
performed by a slow path, invoking a new runtime entry point
(artReadBarrierMark).

Other read barrier algorithms continue to use the original
slow path based implementation, which has been renamed as
GenerateReadBarrierSlow/GenerateReadBarrierForRootSlow.

Bug: 12687968
Change-Id: Ie610c4befc19ff22378a8cba38b422dcacb54320
a7a4759946d9f11c88dc108b2b6a9518ce9c1e18 24-Nov-2015 Nicolas Geoffray <ngeoffray@google.com> Revert "lambda: Add support for invoke-interface for boxed innate lambdas"

955-lambda is flaky

Bug: 24618608
Bug: 25107649

This reverts commit 457e874459ae638145cab6d572e34d48480e39d2.

(cherry picked from commit 3a0909248e04b22c3981cbf617bc2502ed5b6380)

Change-Id: I24884344d21d7a4262e53e3f5dba57032687ddb7
3a0909248e04b22c3981cbf617bc2502ed5b6380 24-Nov-2015 Nicolas Geoffray <ngeoffray@google.com> Revert "lambda: Add support for invoke-interface for boxed innate lambdas"

955-lambda is flaky

Bug: 24618608
Bug: 25107649

This reverts commit 457e874459ae638145cab6d572e34d48480e39d2.

Change-Id: I24884344d21d7a4262e53e3f5dba57032687ddb7
457e874459ae638145cab6d572e34d48480e39d2 23-Oct-2015 Igor Murashkin <iam@google.com> lambda: Add support for invoke-interface for boxed innate lambdas

Lambda closures created with the 'create-lambda' instruction
(termed "innate lambdas") can be turned into an object with 'box-lambda'.

This CL enables support for those kinds of lambdas to work with
'invoke-interface' by generating a proxy class for the lambda.

Note: MIPS32/64 support not included.

Bug: 24618608
Bug: 25107649
Change-Id: Ic8f1bb66ebeaed4097e758a50becf1cff6ccaefb
0d5a281c671444bfa75d63caf1427a8c0e6e1177 13-Nov-2015 Roland Levillain <rpl@google.com> x86/x86-64 read barrier support for concurrent GC in Optimizing.

This first implementation uses slow paths to instrument heap
reference loads and GC root loads for the concurrent copying
collector, respectively calling the artReadBarrierSlow and
artReadBarrierForRootSlow (new) runtime entry points.

Notes:
- This implementation does not instrument HInvokeVirtual
nor HInvokeInterface instructions (for class reference
loads), as the corresponding read barriers are not stricly
required with the current concurrent copying collector.
- Intrinsics which may eventually call (on slow path) are
disabled when read barriers are enabled, as the current
slow path infrastructure does not support this case.
- When read barriers are enabled, the code generated for a
HArraySet instruction always go into the array set slow
path for object arrays (delegating the operation to the
runtime), as we are lacking a mechanism to keep a
temporary register live accross a runtime call (needed for
the instrumentation of type checking code, which requires
two successive read barriers).

Bug: 12687968
Change-Id: I14cd6107233c326389120336f93955b28ffbb329
de95c870993673b512009d94a931cd980df0e6b6 10-Nov-2015 lwang85 <li.w.wang@intel.com> RosAlloc fast path inline in assembly for x86 32bit.

Port patch https://android-review.googlesource.com/#/c/180014/ for
x86 32bit.
Measurement:
AndroidGCTest(ms, the lower the better): 73372->68165, 7.10% improvement.

Signed-off-by: lwang85 <li.w.wang@intel.com>
Change-Id: I9ac3fc56f98574c41fc070dbf12ce7474d6a3610
7b4ca39ff07b401596a1c9083e0fea6dd7abfd24 04-Aug-2015 Przemyslaw Szczepaniak <pszczepaniak@google.com> Fixed x86 art_quick_string_compareto asm code.

Change-Id: Icdca857776cb541c3db9ad6aeceaa882193edd9f
dc412b6f49a65774b7af654f65cbff619cb7d85a 15-Oct-2015 Hiroshi Yamauchi <yamauchi@google.com> Revert "Revert "Implement rosalloc fast path in assembly for 32 bit arm.""

With a heap poisoning fix.

This reverts commit cf91c7d973f3b2f491abc61d47c141782c96d46e.

Bug: 9986565
Change-Id: Ia72edbde65ef6119e1931a77cc4c595a0b80ce31
cf91c7d973f3b2f491abc61d47c141782c96d46e 15-Oct-2015 Nicolas Geoffray <ngeoffray@google.com> Revert "Implement rosalloc fast path in assembly for 32 bit arm."

Tentative. Looks like heap poisoning breaks with this change.

bug: 9986565

This reverts commit e6316940db61faead36f9642cce137d41fc8f606.

Change-Id: I5c63758221464fe319315f40ae79c656048faed0
e6316940db61faead36f9642cce137d41fc8f606 08-Oct-2015 Hiroshi Yamauchi <yamauchi@google.com> Implement rosalloc fast path in assembly for 32 bit arm.

Measurements (N5, ms)
BinaryTrees: 1702 -> 987 (-42%)
MemAllocTest: 2480 -> 2270 (-8%)

Bug: 9986565

Change-Id: I460af3626ad724078463d27cf74a94b7ff7468c5
4adeab196d160f70b4865fb8be048ddd2ac7ab82 03-Oct-2015 Hiroshi Yamauchi <yamauchi@google.com> Refactor the alloc entry point generation code.

Move the x86/x86-64 specific alloc entrypoint generation code to a macro
GENERATE_ALLOC_ENTRYPOINTS_FOR_EACH_ALLOCATOR in a common file to remove
duplication.

This will make it easier to selectively add more hand-written assembly
allocation fast path code.

Rename RETURN_IF_RESULT_IS_NON_ZERO to
RETURN_IF_RESULT_IS_NON_ZERO_OR_DELIVER in the x86/x86_64 files to match
the other architectures.

Bug: 9986565
Change-Id: I56f33b790f94db68891db8a2f42e9231d1770eef
e460d1df1f789c7c8bb97024a8efbd713ac175e9 29-Sep-2015 Calin Juravle <calin@google.com> Revert "Revert "Support unresolved fields in optimizing"

The CL also changes the calling convetion for 64bit static field set
to use kArg2 instead of kArg1. This allows optimizing to keep
the asumptions:
- arm pairs are always of form (even_reg, odd_reg)
- ecx_edx is not used as a register on x86.

This reverts commit e6f49b47b6a4dc9c7684e4483757872cfc7ff1a1.

Change-Id: I93159917565824084abc96775f31be1a4249f2f3
639bdd13993644a267f177f8f5936496bda65e2b 03-Jun-2015 Andreas Gampe <agampe@google.com> ART: Single-frame deopt

Add deoptimization of a single frame. Works by removing the managed
code frame and jumping into the quick-to-interpreter bridge, and
the bridge understanding a stored ShadowFrame.

We need a separate fixup pass. For x86, we leave the return address
on the stack so we don't need to push it there.

Bug: 21611912
Change-Id: I06625685ced8b054244f8685ab50b238a705b9d2
0747466fca310eedea5fc49e37d54f240a0b3c0f 25-Aug-2015 Sebastien Hertz <shertz@google.com> Revert "Revert "Fix deoptimization with pending exception""

This reverts commit 6e2d5747d00697a25251d25dd33b953e54709507.

Fixes the deoptimization path from compiled code (generated by the
Optimizing compiler) by adding wrapper artDeoptimizeFromCompiledCode.
This wrapper, called through the matching assembler stub
art_quick_deoptimize_from_compiled_code, pushes the deoptimization
context just before deoptimizing the stack.

Bug: 23371176
Bug: 19944235
Change-Id: Ia7082656998aebdd0157438f7e6504c120e10d3e
6306921722283d2b0f8aac01883ad83215d6e864 22-Aug-2015 Man Cao <manc@google.com> Add a missing reader barrier in entrypoint stub

Also refactored some comments.

Change-Id: I5c50f487bf9d71f1be5f6c8814bf039993fc1267
1aee900d5a0b3a8d78725a7551356bda0d8554e1 15-Jul-2015 Man Cao <manc@google.com> Add read barrier support to the entrypoints.

Also remove "THIS_LOAD_REQUIRES_READ_BARRIER" since reading
an ArtMethod* no longer needs read barrier.

stub_test should also work with read barriers now.

Change-Id: I3fba18042de2f867a18dbdc38519986212bd9769
4360be281a5f938e1762a1e3ec3b8a949ba05ff3 15-Jul-2015 Andreas Gampe <agampe@google.com> ART: Remove some of the Mac craziness

We rely on new-enough Clang/LLVM builds nowadays. The integrated
assembler supports named parameters. Throw away most of the
old duplication (effectively cutting support for older Clang
versions). The only required duplications are:

1) Clang as does not support .altmacro. However, the Clang
preprocessor works different wrt/ the GCC preprocessor
and does not give us trouble with inserted spaces.

2) On the Mac, symbols are prefixed with an underscore.

This should help to avoid breaking the Mac build when changing
the assembly code, and prepare for a complete Clang-only build
for x86 and x86-64. Switching to the integrated assembler for
the host build may be done in a follow-up CL.

Bug: 17443165
Change-Id: I1a077d4b612abc2b1b851c1bdabb5008a52e5aa6
55978b87877f4774af213b405c9492dc08549912 15-Jul-2015 Andreas Gampe <agampe@google.com> ART: Fix mac build

Fix Clang assembler bugs introduced in commit
3031c8da0c5009183f770b005c245f9bf2a4d01b.

Change-Id: I460c7c1b8f4380244925d248b90c88239540527a
3031c8da0c5009183f770b005c245f9bf2a4d01b 14-Jul-2015 Andreas Gampe <agampe@google.com> ART: Remove art_quick_invoke_interface_trampoline

The function has only been used by the IMT conflict resolution
trampoline for a while. Merge the two, which saves a branch.

Change-Id: I2f8c9204adf839ddc5459cc04e70d98f858110a1
9f5e1d9b63ef44e05c2cc7b141ef788ecc0084c7 13-Jul-2015 Christopher Ferris <cferris@google.com> Fix cfi information for x86.

With this change, I can now enable debug malloc fully.

Bug: 19071092
(cherry picked from commit 9f66589f3ca6055501c99333a19b69349b8f8568)

Change-Id: I04d477d0294d67c5e3a9d9147889bdffb9086bd4
9f66589f3ca6055501c99333a19b69349b8f8568 13-Jul-2015 Christopher Ferris <cferris@google.com> Fix cfi information for x86.

With this change, I can now enable debug malloc fully.

Bug: 19071092
Change-Id: Iabfb18505feffb480504a8bbfbac60dd219ed48a
e7d876adcfc1977800264ab7540aa488c1568b48 28-Jun-2015 Mathieu Chartier <mathieuc@google.com> ART: Fix CFI annotation for art_quick_aput_obj

Fix the CFI state after an early return.

Bug: 22014525

(cherry picked from commit 2738639bcd30b908d825725169b7497ed047debb)

Change-Id: I56b9ba8cf8c47d70a642f064e59c7e04a476dd2f
2738639bcd30b908d825725169b7497ed047debb 28-Jun-2015 Mathieu Chartier <mathieuc@google.com> ART: Fix CFI annotation for art_quick_aput_obj

Fix the CFI state after an early return.

Bug: 22014525
Change-Id: I56b9ba8cf8c47d70a642f064e59c7e04a476dd2f
6b90d42316e0370c789dddb5dda48d7403ea378f 27-Jun-2015 Andreas Gampe <agampe@google.com> ART: Fix CFI annotation in arm64, x86 and x86-64 assembly

To be able to unroll in the exception case, the state needs to be
reset to before the jump.

Bug: 22014525
Change-Id: Ic60400b5bf0efcb713c24df1728623d072f344ab
dfc5db6a6deea37c217e29e810e757945dae8586 18-Jun-2015 Mathieu Chartier <mathieuc@google.com> Fix moving GC bugs in proxy stub for X86/X86_64

Needed to restore the refs.

(cherry picked from commit 9346ff0cfad6344d0bf4eaa69362dbe1987ac054)

Bug: 21907554
Change-Id: I562906dff07dcaa78dfb39646ba9ab35a5f56c6c
9346ff0cfad6344d0bf4eaa69362dbe1987ac054 18-Jun-2015 Mathieu Chartier <mathieuc@google.com> Fix moving GC bugs in proxy stub for X86/X86_64

Needed to restore the refs.

Bug: 21907554
Change-Id: I562906dff07dcaa78dfb39646ba9ab35a5f56c6c
bfa5eb6e8d15ea73a36f8df449630f285a91e995 30-May-2015 Hiroshi Yamauchi <yamauchi@google.com> Add heap poisoning support to the entrypoints.

In preparation for full compiler/managed-code support.

Enable stub_test with heap poisoning.

Bug: 12687968
Change-Id: I79fc54ce6386c0a1eb9621759bb4cc23bc393a75
3d21bdf8894e780d349c481e5c9e29fe1556051c 22-Apr-2015 Mathieu Chartier <mathieuc@google.com> Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997

(cherry picked from commit e401d146407d61eeb99f8d6176b2ac13c4df1e33)

Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d

Fix some ArtMethod related bugs

Added root visiting for runtime methods, not currently required
since the GcRoots in these methods are null.

Added missing GetInterfaceMethodIfProxy in GetMethodLine, fixes
--trace run-tests 005, 044.

Fixed optimizing compiler bug where we used a normal stack location
instead of double on ARM64, this fixes the debuggable tests.

TODO: Fix JDWP tests.

Bug: 19264997

Change-Id: I7c55f69c61d1b45351fd0dc7185ffe5efad82bd3

ART: Fix casts for 64-bit pointers on 32-bit compiler.

Bug: 19264997
Change-Id: Ief45cdd4bae5a43fc8bfdfa7cf744e2c57529457

Fix JDWP tests after ArtMethod change

Fixes Throwable::GetStackDepth for exception event detection after
internal stack trace representation change.

Adds missing ArtMethod::GetInterfaceMethodIfProxy call in case of
proxy method.

Bug: 19264997
Change-Id: I363e293796848c3ec491c963813f62d868da44d2

Fix accidental IMT and root marking regression

Was always using the conflict trampoline. Also included fix for
regression in GC time caused by extra roots. Most of the regression
was IMT.

Fixed bug in DumpGcPerformanceInfo where we would get SIGABRT due to
detached thread.

EvaluateAndApplyChanges:
From ~2500 -> ~1980
GC time: 8.2s -> 7.2s due to 1s less of MarkConcurrentRoots

Bug: 19264997
Change-Id: I4333e80a8268c2ed1284f87f25b9f113d4f2c7e0

Fix bogus image test assert

Previously we were comparing the size of the non moving space to
size of the image file.

Now we properly compare the size of the image space against the size
of the image file.

Bug: 19264997
Change-Id: I7359f1f73ae3df60c5147245935a24431c04808a

[MIPS64] Fix art_quick_invoke_stub argument offsets.

ArtMethod reference's size got bigger, so we need to move other args
and leave enough space for ArtMethod* and 'this' pointer.

This fixes mips64 boot.

Bug: 19264997
Change-Id: I47198d5f39a4caab30b3b77479d5eedaad5006ab
e401d146407d61eeb99f8d6176b2ac13c4df1e33 22-Apr-2015 Mathieu Chartier <mathieuc@google.com> Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997
Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d
8ea18d0f066f63fa4e5d154f14327468bf288e2b 26-May-2015 Nicolas Geoffray <ngeoffray@google.com> Pass the dex method index directly to interface trampoline.

This avoids computing the dex pc and re-finding the method
index again. I have kept the code for kDebugBuild.

Change-Id: Icd60e0deade755e32b54021c0875b1af592b8c3e
7ea6a170486d81b127e69673cd1020c4db628c93 19-May-2015 Nicolas Geoffray <ngeoffray@google.com> Don't hardcode the location of the caller.

This is to avoid shooting ourselves in the foot when
dealing with inlined frames. Instead, use common methods
for fetching the caller and its dex pc.

Change-Id: I3467a7b50cf163022d332e80356f0aab747de252
848f70a3d73833fc1bf3032a9ff6812e429661d9 15-Jan-2014 Jeff Hao <jeffhao@google.com> Replace String CharArray with internal uint16_t array.

Summary of high level changes:
- Adds compiler inliner support to identify string init methods
- Adds compiler support (quick & optimizing) with new invoke code path
that calls method off the thread pointer
- Adds thread entrypoints for all string init methods
- Adds map to verifier to log when receiver of string init has been
copied to other registers. used by compiler and interpreter

Change-Id: I797b992a8feb566f9ad73060011ab6f51eb7ce01
5ea536aa4a6414db01beaf6f8bd8cb9adc5cfc92 20-Apr-2015 Vladimir Marko <vmarko@google.com> Remove ArtMethod* parameter from dex cache entry points.

Load the ArtMethod* using an optimized stack walk instead.
This reduces the size of the generated code.

Three of the entry points are called only from a slow-path
and the fourth (InitializeTypeAndVerifyAccess) is rare and
already slow enough that the one or two extra loads
(depending on whether we already have the ArtMethod* in a
register) are insignificant. And as we're starting to use
PC-relative addressing of the dex cache arrays (already
done by Quick for the boot image), having the ArtMethod* in
a register becomes less likely anyway.

Change-Id: Ib19b9d204e355e13bf386662a8b158178bf8ad28
2cebb24bfc3247d3e9be138a3350106737455918 22-Apr-2015 Mathieu Chartier <mathieuc@google.com> Replace NULL with nullptr

Also fixed some lines that were too long, and a few other minor
details.

Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
d43b3ac88cd46b8815890188c9c2b9a3f1564648 01-Apr-2015 Mingyao Yang <mingyao@google.com> Revert "Revert "Deoptimization-based bce.""

This reverts commit 0ba627337274ccfb8c9cb9bf23fffb1e1b9d1430.

Change-Id: I1ca10d15bbb49897a0cf541ab160431ec180a006
0ba627337274ccfb8c9cb9bf23fffb1e1b9d1430 24-Mar-2015 Andreas Gampe <agampe@google.com> Revert "Deoptimization-based bce."

This breaks compiling the core image:

Error after BCE: art::SSAChecker: Instruction 219 in block 1 does not dominate use 221 in block 1.

This reverts commit e295e6ec5beaea31be5d7d3c996cd8cfa2053129.

Change-Id: Ieeb48797d451836ed506ccb940872f1443942e4e
e295e6ec5beaea31be5d7d3c996cd8cfa2053129 07-Mar-2015 Mingyao Yang <mingyao@google.com> Deoptimization-based bce.

A mechanism is introduced that a runtime method can be called
from code compiled with optimizing compiler to deoptimize into
interpreter. This can be used to establish invariants in the managed code
If the invariant does not hold at runtime, we will deoptimize and continue
execution in the interpreter. This allows to optimize the managed code as
if the invariant was proven during compile time. However, the exception
will be thrown according to the semantics demanded by the spec.

The invariant and optimization included in this patch are based on the
length of an array. Given a set of array accesses with constant indices
{c1, ..., cn}, we can optimize away all bounds checks iff all 0 <= min(ci) and
max(ci) < array-length. The first can be proven statically. The second can be
established with a deoptimization-based invariant. This replaces n bounds
checks with one invariant check (plus slow-path code).

Change-Id: I8c6e34b56c85d25b91074832d13dba1db0a81569
e15ea086439b41a805d164d2beb07b4ba96aaa97 10-Feb-2015 Hiroshi Yamauchi <yamauchi@google.com> Reserve bits in the lock word for read barriers.

This prepares for the CC collector to use the standard object header
model by storing the read barrier state in the lock word.

Bug: 19355854
Bug: 12687968
Change-Id: Ia7585662dd2cebf0479a3e74f734afe5059fb70f
126d65952a03b3e44d5021208673c01920a982a4 03-Mar-2015 Nicolas Geoffray <ngeoffray@google.com> Fix generic JNI stubs to not discard the Java native frame.

Change-Id: Ic856b442fdde5ce91673fc5856eb0dfc84c75d28
f551d1bd8da75d14fd858e4a7c9b60612aec5430 19-Feb-2015 Sebastien Hertz <shertz@google.com> Fix art_quick_instrumentation_entry for x86

Fixes the stack offset used to restore edx.

Bug: 19402798
Change-Id: Ic3636cd362684564196997c4a3b3bebdc1be9a4e
3e6a3bf797e49b7f449256455c7e522e888687d8 19-Jan-2015 Mark Mendell <mark.p.mendell@intel.com> ART: Change x86 long param ABI (Quick/JNI/Opt)

Ensure that we don't pass a long parameter across the last register
and the stack: skip the register and allocate it only on the stack.
This was requested to simplify the optimizing compiler code
generation for x86.

Optimizing (Baseline) compiler support for x86 longs:
- Remove QuickParameter from Location, as there are no longer any uses
of it.

Bump oat.h version because we changed an ABI again.

I changed IsParamALong() to return false for argument 0 (this argument).
I am not sure why it differed from all other tests.

I have not tested on ARM. I followed Nicolas's suggestions for setting
the value of kSplitPairAcrossRegisterAndStack for different
architectures.

Change-Id: I2f16b33c1dac58dd4f4f503e9c2309d845f5fb7a
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
966c3ae95d3c699ee9fbdbccc1acdaaf02325faf 27-Jan-2015 Mark P Mendell <mark.p.mendell@intel.com> Revert "Revert "ART: Implement X86 hard float (Quick/JNI/Baseline)""

This reverts commit 949c91fb91f40a4a80b2b492913cf8541008975e.

This time, don't clobber EBX before saving it.

Redo some of the macros to make register usage explicit.

Change-Id: I8db8662877cd006816e16a28f42444ab7c36bfef
949c91fb91f40a4a80b2b492913cf8541008975e 27-Jan-2015 Vladimir Marko <vmarko@google.com> Revert "ART: Implement X86 hard float (Quick/JNI/Baseline)"

And the 3 Mac build fixes. Fix conflicts in context_x86.* .

This reverts commits
3d2c8e74c27efee58e24ec31441124f3f21384b9 ,
34eda1dd66b92a361797c63d57fa19e83c08a1b4 ,
f601d1954348b71186fa160a0ae6a1f4f1c5aee6 ,
bc503348a1da573488503cc2819c9e30807bea31 .

Bug: 19150481
Change-Id: I6650ee30a7d261159380fe2119e14379e4dc9970
f601d1954348b71186fa160a0ae6a1f4f1c5aee6 26-Jan-2015 Vladimir Marko <vmarko@google.com> ART: Fix assembler labels' usage in macros for Mac.

Change-Id: I99552528329a7f2cd5656eef0210c831cfc5fe09
34eda1dd66b92a361797c63d57fa19e83c08a1b4 26-Jan-2015 Vladimir Marko <vmarko@google.com> ART: Fix asm literals for Mac builds.

Change-Id: Ief922e1e06811b8ec25771b9854376fae3e07929
2cd334ae2d4287216523882f0d298cf3901b7ab1 09-Jan-2015 Hiroshi Yamauchi <yamauchi@google.com> More of the concurrent copying collector.

Bug: 12687968
Change-Id: I62f70274d47df6d6cab714df95c518b750ce3105
3d2c8e74c27efee58e24ec31441124f3f21384b9 13-Jan-2015 Mark Mendell <mark.p.mendell@intel.com> ART: Implement X86 hard float (Quick/JNI/Baseline)

Use XMM0-XMM3 as parameter registers for float/double on X86. X86_64
already uses XMM0-XMM7 for parameters.

Change the 'hidden' argument register from XMM0 to XMM7 to avoid a
conflict.

Add support for FPR save/restore in runtime/arch/x86.

Minimal support for Optimizing baseline compiler.

Bump the version in runtime/oat.h because this is an ABI change.

Change-Id: Ia6fe150e8488b9e582b0178c0dda65fc81d5a8ba
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
24f2dfae084b2382c053f5d688fd6bb26cb8a328 15-Jan-2015 Mark Mendell <mark.p.mendell@intel.com> [optimizing compiler] Implement inline x86 FP '%'

Replace the calls to fmod/fmodf by inline code as is done in the Quick
compiler.

Remove the quick fmod/fmodf runtime entries, as they are no longer in
use.

64 bit code generator Move() routine needed to be enhanced to handle
constants, as Location::Any() allows them to be generated.

Change-Id: I6b6a42f6faeed4b0b3c940453e487daf5b25d184
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
0f9b03c65e0ee8bdc5ddf58af100f5fc356cc98b 12-Jan-2015 Vladimir Marko <vmarko@google.com> Revert "ART: Implement hard float for X86"

This reverts commit 59b9cf7ec0ccc13df91be0bd5c723b8c52410739.

Change-Id: I08333b528032480def474286dc368d916a07e17f
59b9cf7ec0ccc13df91be0bd5c723b8c52410739 09-Jan-2015 Mark Mendell <mark.p.mendell@intel.com> ART: Implement hard float for X86

Use XMM0-XMM3 as parameter registers for float/double on X86. X86_64
already uses XMM0-XMM7 for parameters.

Change the 'hidden' argument register from XMM0 to XMM7 to avoid a
conflict.

This change was requested to simplify the Optimizing compiler
implementation.

Change-Id: I89ba8ade99b9a8a5b1ad1ee5f5cbfd33d656bfaa
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
4808846b2a8647a448aaa05d561a4f60b190196b 12-Dec-2014 Nicolas Geoffray <ngeoffray@google.com> Save all registers in native to Java stubs.

This will make things more friendly when experimenting with the
number of callee saves in optimizing.

Change-Id: Iefd9a2da329a420eb69fc2fa9e91c06bbda30cdb
d2ec87d84057174d4884ee16f652cbcfd31362e9 08-Dec-2014 Calin Juravle <calin@google.com> [optimizing compiler] Add REM_FLOAT and REM_DOUBLE

- for arm, x86, x86_64 backends
- reinstated fmod quick entry points for x86. This is a partial revert
of bd3682eada753de52975ae2b4a712bd87dc139a6 which added inline assembly
for floting point rem on x86. Note that Quick still uses the inline
version.
- fix rem tests for longs

Change-Id: I73be19a9f2f2bcf3f718d9ca636e67bdd72b5440
2d7210188805292e463be4bcf7a133b654d7e0ea 10-Nov-2014 Mathieu Chartier <mathieuc@google.com> Change 64 bit ArtMethod fields to be pointer sized

Changed the 64 bit entrypoint and gc map fields in ArtMethod to be
pointer sized. This saves a large amount of memory on 32 bit systems.
Reduces ArtMethod size by 16 bytes on 32 bit.

Total number of ArtMethod on low memory mako: 169957
Image size: 49203 methods -> 787248 image size reduction.
Zygote space size: 1070 methods -> 17120 size reduction.
App methods: ~120k -> 2 MB savings.

Savings per app on low memory mako: 125K+ per app
(less active apps -> more image methods per app).

Savings depend on how often the shared methods are on dirty pages vs
shared.

TODO in another CL, delete gc map field from ArtMethod since we
should be able to get it from the Oat method header.

Bug: 17643507

Change-Id: Ie9508f05907a9f693882d4d32a564460bf273ee8

(cherry picked from commit e832e64a7e82d7f72aedbd7d798fb929d458ee8f)
e832e64a7e82d7f72aedbd7d798fb929d458ee8f 10-Nov-2014 Mathieu Chartier <mathieuc@google.com> Change 64 bit ArtMethod fields to be pointer sized

Changed the 64 bit entrypoint and gc map fields in ArtMethod to be
pointer sized. This saves a large amount of memory on 32 bit systems.
Reduces ArtMethod size by 16 bytes on 32 bit.

Total number of ArtMethod on low memory mako: 169957
Image size: 49203 methods -> 787248 image size reduction.
Zygote space size: 1070 methods -> 17120 size reduction.
App methods: ~120k -> 2 MB savings.

Savings per app on low memory mako: 125K+ per app
(less active apps -> more image methods per app).

Savings depend on how often the shared methods are on dirty pages vs
shared.

TODO in another CL, delete gc map field from ArtMethod since we
should be able to get it from the Oat method header.

Bug: 17643507

Change-Id: Ie9508f05907a9f693882d4d32a564460bf273ee8
32b12f8ae491e1acfeaee334e9a30c6c0a232072 17-Nov-2014 Sebastien Hertz <shertz@google.com> Fix art_quick_instrumentation_entry stub for x86/x86_64

Fixes bad stack offset for x86 where we read the return pc from an
incorrect location.

Fixes bad register for x86_64. The return pc is the 4th argument of
the called C function. It must be passed in rcx instead of r8 (which
is used for 5th argument).

Bug: 18170596
Change-Id: Idb521d2f6da415448fa61acf8b7d21076822830f
e0b46a7513980b5bcb3c3af160a5b3ee077fad2d 05-Nov-2014 Serguei Katkov <serguei.i.katkov@intel.com> Fix x86 art_quick_set64_instance quick entrypoint

art_quick_set64_instance accept ebx as a 4-th parameter.
At the same time it is used as a temporary for SETUP_REFS_ONLY_CALLEE_SAVE_FRAME.
We should preserve it and restore to pass the right value to artSet64InstanceFromCode.

Change-Id: Iac0a32583be1015e502ae0f8ff57c4b9c0301730
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
6c480d6050aab315a8592f2d671f40b8179f28dd 22-Oct-2014 Ian Rogers <irogers@google.com> Fix Mac build.

Why can't Apple implement named macro arguments!

Change-Id: I5e09e04449c3a5d9f6430b587c004d6b16000f09
1d8cdbc5202378a5f1a4b3a1fba610675ed4dcd5 23-Sep-2014 Ian Rogers <irogers@google.com> Refactor quick entrypoints

Remove FinishCalleeSaveFrameSetup.
Assembly routines write down anchor into TLS as well as placing runtime
method in callee save frame.
Simplify artSet64InstanceFromCode by not computing the referrer from the
stack in the C++ code.
Move assembly offset tests next to constant declaration and tidy arch_test.

Change-Id: Iededeebc05e54a1e2bb7bb3572b8ba012cffa1c8
677cd61ad05d993c4d3b22656675874f06d6aabc 15-Oct-2014 Ian Rogers <irogers@google.com> Make ART compile with GCC -O0 again.

Tidy up InstructionSetFeatures so that it has a type hierarchy dependent on
architecture.
Add to instruction_set_test to warn when InstructionSetFeatures don't agree
with ones from system properties, AT_HWCAP and /proc/cpuinfo.
Clean-up class linker entry point logic to not return entry points but to
test whether the passed code is the particular entrypoint. This works around
image trampolines that replicate entrypoints.
Bug: 17993736

(cherry picked from commit 6f3dbbadf4ce66982eb3d400e0a74cb73eb034f3)

Change-Id: I3e7595f437db4828072589d475a5453b7f31003e
6f3dbbadf4ce66982eb3d400e0a74cb73eb034f3 15-Oct-2014 Ian Rogers <irogers@google.com> Make ART compile with GCC -O0 again.

Tidy up InstructionSetFeatures so that it has a type hierarchy dependent on
architecture.
Add to instruction_set_test to warn when InstructionSetFeatures don't agree
with ones from system properties, AT_HWCAP and /proc/cpuinfo.
Clean-up class linker entry point logic to not return entry points but to
test whether the passed code is the particular entrypoint. This works around
image trampolines that replicate entrypoints.
Bug: 17993736

Change-Id: I5f4b49e88c3b02a79f9bee04f83395146ed7be23
832336b3c9eb892045a8de1bb12c9361112ca3c5 09-Oct-2014 Ian Rogers <irogers@google.com> Don't copy fill array data to quick literal pool.

Currently quick copies the fill array data from the dex file to the literal
pool. It then has to go through hoops to pass this PC relative address down
to out-of-line code. Instead, pass the offset of the table to the out-of-line
code and use the CodeItem data associated with the ArtMethod. This reduces
the size of oat code while greatly simplifying it.
Unify the FillArrayData implementation in quick, portable and the interpreters.

Change-Id: I9c6971cf46285fbf197856627368c0185fdc98ca
871bfdcacbce7db574c4d1007f0065e65db26a7f 05-Sep-2014 Andreas Gampe <agampe@google.com> Revert "Revert "x86: Fix art_quick_instrumentation_exit""

Need to use GOT to avoid TEXTREL.

This reverts commit 62aa66f8532b8eb44e882596010b33e7781b0754.

Change-Id: Ife659c28d621596ad288999fa128dcf32fc0b1c7
62aa66f8532b8eb44e882596010b33e7781b0754 05-Sep-2014 Andreas Gampe <agampe@google.com> Revert "x86: Fix art_quick_instrumentation_exit"

GCC 4.8 can't handle it correctly.

This reverts commit 5324dc896b69fc14a24334f52169e2319b9b3842.

Change-Id: I2478a52f147b585658d0e5769c3fce7f2c75240e
5324dc896b69fc14a24334f52169e2319b9b3842 27-Aug-2014 Dmitry Petrochenko <dmitry.petrochenko@intel.com> x86: Fix art_quick_instrumentation_exit

Make sure that we use a move-immediate instead of a
move-from-address (previously this was a load, whereas now
we are interested in the address as a value).

Change-Id: I4048c4a97abcc6524fe976bdc35b834d8f3bc592
Signed-off-by: Dmitry Petrochenko <dmitry.petrochenko@intel.com>
8ce6b9040747054b444a7fa706503cd257801936 26-Aug-2014 Dave Allison <dallison@google.com> Handle nested signals

This allows for signals to be raised inside the ART signal handler.
This can occur when the JavaStackTraceHandler attempts to generate
a stack trace and something goes wrong.

It also fixes an issue where the fault manager was not being
correctly shut down inside the signal chaining code. In this
case the signal handler was not restored to the original.

Bug: 17006816
Bug: 17133266

(cherry picked from commit fabe91e0d558936ac26b98d2b4ee1af08f58831d)

Change-Id: I10730ef52d5d8d34610a5293253b3be6caf4829e
fabe91e0d558936ac26b98d2b4ee1af08f58831d 26-Aug-2014 Dave Allison <dallison@google.com> Handle nested signals

This allows for signals to be raised inside the ART signal handler.
This can occur when the JavaStackTraceHandler attempts to generate
a stack trace and something goes wrong.

It also fixes an issue where the fault manager was not being
correctly shut down inside the signal chaining code. In this
case the signal handler was not restored to the original.

Bug: 17006816
Bug: 17133266
Change-Id: I9c25bf4f6921e6a107aefbdf47d2c0db9f41508f
48160e72cf4dc0a7a99fb2276e0d20d602e9151f 26-Aug-2014 Ian Rogers <irogers@google.com> Fix usage of literals within a macro.

Macs handle arguments in macros as $num meaning literals must be $$num.

Change-Id: Ia30c7ef4e089561e9f23f353d7080e800b117d70
e8817b265deb6747ee7437ac8d4a00231231dab5 26-Aug-2014 Fred Shih <ffred@google.com> Fixed typo in entrypoint stub.

Fixed typo for x86 stub causing mac build failure.

Change-Id: I5e063fb87c598c2d9beb22f6d5b97b7fd4df9b84
37f05ef45e0393de812d51261dc293240c17294d 17-Jul-2014 Fred Shih <ffred@google.com> Reduced memory usage of primitive fields smaller than 4-bytes

Reduced memory used by byte and boolean fields from 4 bytes down to a
single byte and shorts and chars down to two bytes. Fields are now
arranged as Reference followed by decreasing component sizes, with
fields shuffled forward as needed.

Bug: 8135266
Change-Id: I65eaf31ed27e5bd5ba0c7d4606454b720b074752
8d98ac61fca47c13f8586ab635c37ef5460b3749 21-Aug-2014 Andreas Gampe <agampe@google.com> ART: Remove GOT setup from x86 assembly where not needed

Change-Id: Id839d6d6427da7b7faa4340e04085cdab388e9a5
29b3841ad8c1c18ee7ddd2d8cab85806b3d62eaa 13-Aug-2014 Andreas Gampe <agampe@google.com> ART: Set default visibility to protected

Set default visibility of symbols to protected. This allows the
linker to optimize internal calls and helps avoid plt calls.

Make almost all assembly stubs hidden, as -fvisibility does not
seem to apply to them. Change the assembly tests accordingly. Also
allows to clean up previous hacks to avoid plt calls.

Bug: 16974467

(cherry picked from commit 235e77bd9f19e4faefda109be40f8744f3a66f40)

Change-Id: I9030dcf6116251f434f94a2b08e56e12085af652
ebee8de725d5fa83483642786b19ea453d865762 13-Aug-2014 Nicolas Geoffray <ngeoffray@google.com> Fix bugs in the x86 and arm versions of generic JNI.

Also fix the run script of 116-nodex2oat to use the non-prebuild
script for target.

Bug: 17000769

(cherry-picked from commit 54accbca0b549b1b1ad3ef09655dad438bc1e104)

Change-Id: I439fcd710fb8bb408f3288ff8fb34fef23890adb
b038ba66a166fb264ca121632f447712e0973b5b 14-Aug-2014 Dave Allison <dallison@google.com> Revert "Revert "Reduce stack usage for overflow checks""

Fixes stack protection issue.
Fixes mac build issue.

This reverts commit 83b1940e6482b9d8feba5c492507735686650ea5.

Change-Id: I7ba17252882b23a740bcda2ea94aacf398255406
4cf00ba324f5f6884059796a6ba41937f32e1844 14-Aug-2014 Dave Allison <dallison@google.com> Revert "Reduce stack usage for overflow checks"

This reverts commit 63c051a540e6dfc806f656b88ac3a63e99395429.

Change-Id: I282a048994fcd130fe73842b16c21680053c592f
03c9785a8a6d712775cf406c4371d0227c44148f 14-Aug-2014 Dave Allison <dallison@google.com> Revert "Revert "Reduce stack usage for overflow checks""

Fixes stack protection issue.
Fixes mac build issue.

This reverts commit 83b1940e6482b9d8feba5c492507735686650ea5.

Change-Id: I7ba17252882b23a740bcda2ea94aacf398255406
83b1940e6482b9d8feba5c492507735686650ea5 14-Aug-2014 Dave Allison <dallison@google.com> Revert "Reduce stack usage for overflow checks"

This reverts commit 63c051a540e6dfc806f656b88ac3a63e99395429.

Change-Id: I282a048994fcd130fe73842b16c21680053c592f
235e77bd9f19e4faefda109be40f8744f3a66f40 13-Aug-2014 Andreas Gampe <agampe@google.com> ART: Set default visibility to protected

Set default visibility of symbols to protected. This allows the
linker to optimize internal calls and helps avoid plt calls.

Make almost all assembly stubs hidden, as -fvisibility does not
seem to apply to them. Change the assembly tests accordingly. Also
allows to clean up previous hacks to avoid plt calls.

Bug: 16974467
Change-Id: I9030dcf6116251f434f94a2b08e56e12085af652
63c051a540e6dfc806f656b88ac3a63e99395429 26-Jul-2014 Dave Allison <dallison@google.com> Reduce stack usage for overflow checks

This reduces the stack space reserved for overflow checks to 12K, split
into an 8K gap and a 4K protected region. GC needs over 8K when running
in a stack overflow situation.

Also prevents signal runaway by detecting a signal inside code that
resulted from a signal handler invokation. And adds a max signal count to
the SignalTest to prevent it running forever.

Also reduces the number of iterations for the InterfaceTest as this was
taking (almost) forever with the --trace option on run-test.

Bug: 15435566

Change-Id: Id4fd46f22d52d42a9eb431ca07948673e8fda694

Conflicts:
compiler/optimizing/code_generator_x86_64.cc
runtime/arch/x86/fault_handler_x86.cc
runtime/arch/x86_64/quick_entrypoints_x86_64.S
648d7112609dd19c38131b3e71c37bcbbd19d11e 26-Jul-2014 Dave Allison <dallison@google.com> Reduce stack usage for overflow checks

This reduces the stack space reserved for overflow checks to 12K, split
into an 8K gap and a 4K protected region. GC needs over 8K when running
in a stack overflow situation.

Also prevents signal runaway by detecting a signal inside code that
resulted from a signal handler invokation. And adds a max signal count to
the SignalTest to prevent it running forever.

Also reduces the number of iterations for the InterfaceTest as this was
taking (almost) forever with the --trace option on run-test.

Bug: 15435566

Change-Id: Id4fd46f22d52d42a9eb431ca07948673e8fda694
54accbca0b549b1b1ad3ef09655dad438bc1e104 13-Aug-2014 Nicolas Geoffray <ngeoffray@google.com> Fix bugs in the x86 and arm versions of generic JNI.

Also fix the run script of 116-nodex2oat to use the non-prebuild
script for target.

Bug: 17000769

Change-Id: I439fcd710fb8bb408f3288ff8fb34fef23890adb
a0b530dd5e76662156b40c8a84ebb446b6332598 10-Aug-2014 Dan Albert <danalbert@google.com> Fix the Mac build.

Apparently Mac uses a different assembler directive for .hidden.

Change-Id: Ic2adb6bef82e376c3e5f4a29258a85a0dac00cd5
6a763f149f0c6f705cab8fb1984aa6f9198b2841 10-Aug-2014 Dan Albert <danalbert@google.com> Proper fix after -Bsymbolic change.

Marking the offending symbols as hidden allows the linker to resolve
them at build time.

Bug: 16853291
Change-Id: I1480c1520c23f81e42831a66737bba7bdf3433c2
90c5879d56a4ccd6ed1c5c1aa36baef61352601b 10-Aug-2014 Dan Albert <danalbert@google.com> Fix the Mac build.

Apparently Mac uses a different assembler directive for .hidden.

Change-Id: Ic2adb6bef82e376c3e5f4a29258a85a0dac00cd5
58bea4a6114b9ea4b00e36186357e5b431430123 10-Aug-2014 Dan Albert <danalbert@google.com> Proper fix after -Bsymbolic change.

Marking the offending symbols as hidden allows the linker to resolve
them at build time.

Bug: 16853291
Change-Id: I1480c1520c23f81e42831a66737bba7bdf3433c2
3bed41cf3ace3105686f626fed2ac802376852f3 08-Aug-2014 Dan Albert <danalbert@google.com> Workaround for test failures after Bsymbolic fix.

Change-Id: I0c2e2efbeb5060d4ec5ba706dab422b3c2caaa96
bae21bb7f6ca917e0954c970f0bfd2bfa3dcc0a9 07-Aug-2014 Dan Albert <danalbert@google.com> Fix build without -Bsymbolic.

For ARM: Gold is unable to create PLT based relocations for conditional
branches.
For x86: Some uses of SYMBOL() should have been PLT_SYMBOL().

Bug: 16853291
Change-Id: Id70488b077256a70137c4417f21be2c2d1d4341c
35e1e6ad4b50f1adbe9f93fe467766f042491896 30-Jul-2014 Tong Shen <endlessroad@google.com> 1. Fix CFI for quick compiled code in x86 & x86_64;
2. Emit CFI in .eh_frame instead of .debug_frame.

With CFI, we can correctly unwind past quick generated code.
Now gdb should unwind to main() for both x86 & x86_64 host-side ART.

Note that it does not work with relocation yet.

Testing:
1. art/test/run-test --host --gdb [--64] --no-relocate 005
2. In gdb, run 'b art_quick_invoke_stub', then 'r', then 'c' a few times
3. In gdb, run 'bt'. You should see stack frames down to main()

Change-Id: I5350d4097dc3d360a60cb17c94f1d02b99bc58bb
f5881ed68a05b371e7578966470ff3801b180578 23-Jul-2014 Andreas Gampe <agampe@google.com> ART: Fix x86_64 instrumentation_exit, also movsd -> movq

Change movd/movsd to movq.

Bug: 16386215

(cherry picked from commit fea29016a79f39ac12a4ba4ebdcbc86800c03427)

Change-Id: Icca71ca2aeeb2917aff46043051d6046f04395d4
2c240f7972dc4e6c7cbfb5d4ddcae64720230109 23-Jul-2014 Jeff Hao <jeffhao@google.com> Fix x86 instrumentation exit entrypoint and trace size limit.

The x86 instruction movd only copies a 32-bit value when used with a
memory location. movsd properly copies 64-bits.

Bug: 16386215

(cherry picked from commit cf2e7b0621dfe7fcacd56555dffabab65d1130e7)

Change-Id: I102db8aaa5e8a6b3a88f01e545d1bb51b4f3d5d4
fea29016a79f39ac12a4ba4ebdcbc86800c03427 23-Jul-2014 Andreas Gampe <agampe@google.com> ART: Fix x86_64 instrumentation_exit, also movsd -> movq

Change movd/movsd to movq.

Bug: 16386215
Change-Id: Icca71ca2aeeb2917aff46043051d6046f04395d4
cf2e7b0621dfe7fcacd56555dffabab65d1130e7 23-Jul-2014 Jeff Hao <jeffhao@google.com> Fix x86 instrumentation exit entrypoint and trace size limit.

The x86 instruction movd only copies a 32-bit value when used with a
memory location. movsd properly copies 64-bits.

Bug: 16386215

Change-Id: Ia59b2c2af72ce5202c7b62413687aedb48cfd25e
147eb41b53729ec8d5c188d1cac90964a51afb8a 11-Jul-2014 Dave Allison <dallison@google.com> Revert "Revert "Revert "Revert "Add implicit null and stack checks for x86""""

This reverts commit 0025a86411145eb7cd4971f9234fc21c7b4aced1.

Bug: 16256184
Change-Id: Ie0760a0c293aa3b62e2885398a8c512b7a946a73

Conflicts:
compiler/dex/quick/arm64/target_arm64.cc
compiler/image_test.cc
runtime/fault_handler.cc
69dfe51b684dd9d510dbcb63295fe180f998efde 11-Jul-2014 Dave Allison <dallison@google.com> Revert "Revert "Revert "Revert "Add implicit null and stack checks for x86""""

This reverts commit 0025a86411145eb7cd4971f9234fc21c7b4aced1.

Bug: 16256184
Change-Id: Ie0760a0c293aa3b62e2885398a8c512b7a946a73
7fb36ded9cd5b1d254b63b3091f35c1e6471b90e 10-Jul-2014 Dave Allison <dallison@google.com> Revert "Revert "Add implicit null and stack checks for x86""

Fixes x86_64 cross compile issue. Removes command line options
and property to set implicit checks - this is hard coded now.

This reverts commit 3d14eb620716e92c21c4d2c2d11a95be53319791.

Change-Id: I5404473b5aaf1a9c68b7181f5952cb174d93a90d
0025a86411145eb7cd4971f9234fc21c7b4aced1 11-Jul-2014 Nicolas Geoffray <ngeoffray@google.com> Revert "Revert "Revert "Add implicit null and stack checks for x86"""

Broke the build.

This reverts commit 7fb36ded9cd5b1d254b63b3091f35c1e6471b90e.

Change-Id: I9df0e7446ff0913a0e1276a558b2ccf6c8f4c949
34e826ccc80dc1cf7c4c045de6b7f8360d504ccf 29-May-2014 Dave Allison <dallison@google.com> Add implicit null and stack checks for x86

This adds compiler and runtime changes for x86
implicit checks. 32 bit only.

Both host and target are supported.
By default, on the host, the implicit checks are null pointer and
stack overflow. Suspend is implemented but not switched on.

Change-Id: I88a609e98d6bf32f283eaa4e6ec8bbf8dc1df78a
3d14eb620716e92c21c4d2c2d11a95be53319791 10-Jul-2014 Dave Allison <dallison@google.com> Revert "Add implicit null and stack checks for x86"

It breaks cross compilation with x86_64.

This reverts commit 34e826ccc80dc1cf7c4c045de6b7f8360d504ccf.

Change-Id: I34ba07821fc0a022fda33a7ae21850957bbec5e7
c200a4abeca91e19969f5b35543f17f812ba32b9 17-Jun-2014 Andreas Gampe <agampe@google.com> ART: Rework Generic JNI, add ARM version

Refactors and optimizes Generic JNI. This version uses TwoWordReturn
to avoid writing to / loading from the bottom of the alloca.

Change-Id: I3287007c976f79c9fd32d3b3a43f2d1371bf4cd3
7ac7e32fb84b6a933181d31694d8a2d81ddca6d6 28-Jun-2014 Elliott Hughes <enh@google.com> Fix the x86 textrel and remove -Wl,--no-fatal-warnings.

Bug: 11358761
Change-Id: I825cecce121a9011f74c5fdf77d1fbecd30adbc7
bd3682eada753de52975ae2b4a712bd87dc139a6 11-Jun-2014 Alexei Zavjalov <alexei.zavjalov@intel.com> ART: Implement rem_double/rem_float for x86/x86-64

This adds inlined version of the rem_double/rem_float bytecodes
for x86/x86-64 platforms. This patch also removes unnecessary
fmod and fmodf stubs from runtime.

Change-Id: I2311aa2adf08d6614527e0da070e3b6ce2343a20
Signed-off-by: Alexei Zavjalov <alexei.zavjalov@intel.com>
e3d5581266301e6a672af6233220037abf52fea1 11-Jun-2014 Ian Rogers <irogers@google.com> Fix host Mac build.

Ptr - ptr is an int not size_t on the Mac.
Fix use of assembly literal macro.
Remove forgotten about WITH_HOST_DALVIK.

Change-Id: I64db1927b2c6a145b6a96ffcc33d704914bba1bb
c5f17732d8144491c642776b6b48c85dfadf4b52 06-Jun-2014 Ian Rogers <irogers@google.com> Remove deprecated WITH_HOST_DALVIK.

Bug: 13751317
Fix the Mac build:
- disable x86 selector removal that causes OS/X 10.9 kernel panics,
- madvise don't need does zero memory on the Mac, factor into MemMap
routine,
- switch to the elf.h in elfutils to avoid Linux kernel dependencies,
- we can't rely on exclusive_owner_ being available from other pthread
libraries so maintain our own when futexes aren't available (we
can't rely on the OS/X 10.8 hack any more),
- fix symbol naming in assembly code,
- work around C library differences,
- disable backtrace in DumpNativeStack to avoid a broken libbacktrace
dependency,
- disable main thread signal handling logic,
- align the stack in stub_test,
- use $(HOST_SHLIB_SUFFIX) rather than .so in host make file variables.

Not all host tests are passing on the Mac with this change. dex2oat
works as does running HelloWorld.
Change-Id: I5a232aedfb2028524d49daa6397a8e60f3ee40d3
779f8c951c0fbe36d4b213113a99541132947bb7 10-Jun-2014 Andreas Gampe <agampe@google.com> ART: Generic JNI for x86

Add the generic JNI trampoline for x86. Small cleanup in the C code.

Change-Id: Icaf9de7c0e5e8d1e6cb1135a54552040344cc5a3
ffddfdf6fec0b9d98a692e27242eecb15af5ead2 03-Jun-2014 Tim Murray <timmurray@google.com> DO NOT MERGE

Merge ART from AOSP to lmp-preview-dev.

Change-Id: I0f578733a4b8756fd780d4a052ad69b746f687a9
8792ae10c0c2ed20c743806522eceeaf0e016e19 22-May-2014 Serguei Katkov <serguei.i.katkov@intel.com> x86: art_quick_instrumentation_entry should not use offset address

art_quick_instrumentation_entry uses offset of the address
instead of full adress but this address is used in ret instruction
which does not expect it.

Change-Id: I9e576037d7adf14a7e9fa8f6d4aba4ee540fcc14
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
1d4d7bdafd0c3d4df7bf8e907b08db9669db7023 23-May-2014 Alexei Zavjalov <alexei.zavjalov@intel.com> ART: refactor x86/x86-64 entrypoints

This patch:

- removes unused stubs in x86/64 runtimes (art_quick_l2d, art_quick_l2f
and art_quick_idivmod)
- replaces art_quick_fmod, art_quick_fmodf and art_quick_is_assignable
entrypoints in x86-64 to the direct calls
- removes art_quick_indexof stub in x86-64

Change-Id: I6141c5c73b0b449fa3b866068b101e0be211b93e
Signed-off-by: Alexei Zavjalov <alexei.zavjalov@intel.com>
5c1e4352614d61fed6868567e58b96682828cb4d 22-Apr-2014 Andreas Gampe <agampe@google.com> Add "arch_test" gtest for assembly stub constants, add some ARM64 assembly code

Add a test that (1) checks all callee-save method frame sizes for
all architectures, (2) checks thread offsets for the runtime
architecture and (3) checks callee-save method offsets for the
runtime architecture.

The "asm_support_XXX.h" files now only contain definitions that are
common between all architectures. Architecture-specific definitions
(i.e., special registers names) have been pushed into the corresponding
.S file. This change was required to be able to undefine definitions
in the test, so that multiple tests can be written in one file.

Test (1) above is in a sense two-stage. The arch_test gtest compares
constants (if it finds them) against the frame size as reported by
the ArtMethods created by the Runtime. This works for all architectures
as we can provide the instruction-set to CreateCalleeSaveMethod. The
second stage of the "test" are preprocessor tests with "#error" in the
case that the constants are not the expected value.

Optimally I'd like to change that to an actual runtime test exercising
the assembly code, which would also allow to check whether the right
registers are stored.

Also added missing assembly code for ARM64 for the callee-save macros.

Also fix X86_64 compilation for Clang 3.5.

Change-Id: I018e6433dffd3d31ba3bfcd75661653f4c7b6552
47d00c0a893b13b69e4bac1836e10cc3e1812d41 17-Apr-2014 Ian Rogers <irogers@google.com> Add untested x86-64 downcall and exception assembly.

Change-Id: Ic555f9f5af8c3a2110a92e55772ff6c0128e5c19
e78d4e1a7066d2bc60d265eb27e78b336df941dd 07-Apr-2014 Serguei Katkov <serguei.i.katkov@intel.com> art_quick_unlock_object uses comparison incorrectly

art_quick_unlock_object incrrectly checks the thin lock condition.
The patch fixes this issue.

Change-Id: I9e2fcf89c9e9cb34aca72ed001672fd83cd53377
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
8ef84afbaeb433adaed98a11902502dd733e5222 03-Apr-2014 Serguei Katkov <serguei.i.katkov@intel.com> art_quick_lock_object uses registers incorrectly

x86 implementation of art_quick_lock_object uses registers
incorrectly in the case of .Lalready_thin. eax points to object
while it is used as holding the lock word.

The patch fixes this.

Change-Id: Iacf1a40c6570fae78a5504ca3b2f1218631f7a8f
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
bf6b92a158053c98b15f4393abb3b86344ec9a20 06-Mar-2014 Andreas Gampe <agampe@google.com> Generic JNI implementation for x86_64

Starting implementation for generic JNI on x86_64. Frames are of
large static size (>4K) right now, should be compacted later. Passes
the whole of jni_compiler_test.

Change-Id: I88ac3e13a534afe7568d62a1ef97cb766e8260e4
2da882315a61072664f7ce3c212307342e907207 27-Feb-2014 Andreas Gampe <agampe@google.com> Initial changes towards Generic JNI option

Some initial changes that lead to an UNIMPLEMENTED. Works
by not compiling for JNI right now and tracking native methods
which have neither quick nor portable code. Uses new trampoline.

Change-Id: I5448654044eb2717752fd7359f4ef8bd5c17be6e
4554bfdc2859712a763a12e35a4176914fc7c994 26-Feb-2014 Alexei Zavjalov <alexei.zavjalov@intel.com> Incorrect result of compareTo between empty and non-empty strings

Current implementation of the Strings.compareTo() handles the case when
empty string compares to non-empty string in the wrong way.

This patch adds handler for such cases.

Change-Id: I35cc2cfd5141551d6da65748c44b59e64a3f8117
Signed-off-by: Alexei Zavjalov <alexei.zavjalov@intel.com>
8016a12a5f9c2ea70b52e353a0169ba836ee9402 22-Feb-2014 Ian Rogers <irogers@google.com> Make X86 assembly labels local.

Avoids the symbols being part of the symbol file and confusing tools like gdb.

Change-Id: I4c40b0d42964e6b2e3fa135320e603b5b41ea0e1
4028a6c83a339036864999fdfd2855b012a9f1a7 20-Feb-2014 Mark Mendell <mark.p.mendell@intel.com> Inline x86 String.indexOf

Take advantage of the presence of a constant search char or start index
to tune the generated code.

Change-Id: I0adcf184fb91b899a95aa4d8ef044a14deb51d88
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
0177e53ea521ad58b70c305700dab32f1ac773b7 12-Feb-2014 Ian Rogers <irogers@google.com> Work in the direction of hard float quick ABIs.

Pass a shorty to ArtMethod::Invoke so that register setup can use it.
Document x86-64 ABI.
Add extra debug output for one JNI native method registration fails, namely a
dump of the Class and its dex file's location.
Add hack to get testing of OatMethod's without GC maps working in 64bit.

Change-Id: Ic06b68e18eac33637df2caf5e7e775ff95ae70f3
ef7d42fca18c16fbaf103822ad16f23246e2905d 06-Jan-2014 Ian Rogers <irogers@google.com> Object model changes to support 64bit.

Modify mirror objects so that references between them use an ObjectReference
value type rather than an Object* so that functionality to compress larger
references can be captured in the ObjectRefererence implementation.
ObjectReferences are 32bit and all other aspects of object layout remain as
they are currently.

Expand fields in objects holding pointers so they can hold 64bit pointers. Its
expected the size of these will come down by improving where we hold compiler
meta-data.
Stub out x86_64 architecture specific runtime implementation.
Modify OutputStream so that reads and writes are of unsigned quantities.
Make the use of portable or quick code more explicit.
Templatize AtomicInteger to support more than just int32_t as a type.
Add missing, and fix issues relating to, missing annotalysis information on the
mutator lock.
Refactor and share implementations for array copy between System and uses
elsewhere in the runtime.
Fix numerous 64bit build issues.

Change-Id: I1a5694c251a42c9eff71084dfdd4b51fff716822
bb8f0ab736b61db8f543e433859272e83f96ee9b 28-Jan-2014 Hiroshi Yamauchi <yamauchi@google.com> Embed array class pointers at array allocation sites.

Following https://android-review.googlesource.com/#/c/79302, embed
array class pointers at array allocation sites in the compiled code.

Change-Id: I67a1292466dfbb7f48e746e5060e992dd93525c5
be1ca55db3362f5b100c4c65da5342fd299520bb 15-Jan-2014 Hiroshi Yamauchi <yamauchi@google.com> Use direct class pointers at allocation sites in the compiled code.

- Rather than looking up a class from its type ID (and checking if
it's resolved/initialized, resolving/initializing if not), use
direct class pointers, if possible (boot-code-to-boot-class pointers
and app-code-to-boot-class pointers.)
- This results in a 1-2% speedup in Ritz MemAllocTest on Nexus 4.
- Embedding the object size (along with class pointers) caused a 1-2%
slowdown in MemAllocTest and isn't implemented in this change.
- TODO: do the same for array allocations.
- TODO: when/if an application gets its own image, implement
app-code-to-app-class pointers.
- Fix a -XX:gc bug.
cf. https://android-review.googlesource.com/79460/
- Add /tmp/android-data/dalvik-cache to the list of locations to
remove oat files in clean-oat-host.
cf. https://android-review.googlesource.com/79550
- Add back a dropped UNLIKELY in FindMethodFromCode().
cf. https://android-review.googlesource.com/74205

Bug: 9986565
Change-Id: I590b96bd21f7a7472f88e36752e675547559a5b1
b10a57da80cd8e53582c9b13aba5014dc1e69929 22-Jan-2014 Mark Mendell <mark.p.mendell@intel.com> Fix non-PLT text relocation introduced by CL 79466

One 'PLT_SYMBOL' was missed. Breaks target tests again.

Change-Id: I67cb4c1b54f889a9935dab4a87da52ae412efb17
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
3f2d031f639b3b9dd4adbf9e70d23de931a9801d 21-Jan-2014 Mark Mendell <mark.p.mendell@intel.com> Use macros to remove CFI information for MAC OS/X

Place allocation macros inline for x86 as the macros aren't/can't
go through the Linux/OSX normalizing macro wrappers.
Switch to clang for OS/X host build thereby enabling -std=gnu++11
and -Wthread-safety. Remove the -Wstrict-aliasing numeric option
as 3 is the default warning level and warning levels aren't
supported by clang's command line.

This builds as far as gtests which fail due to assumptions they
would only ever compile on non-GCC with RTTI.

Change-Id: Id0d83578e9b93b0f6aea5e9b8ddf2815f0dcd8aa
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
a9abe872ad5ad6128d6f3fb018b6447962303ecc 10-Jan-2014 Mark Mendell <mark.p.mendell@intel.com> Make x86 runtime PIC

The existing code in runtime/arch/x86 doesn't use PIC code to call
routines, and this causes a message that libart{,d}.so having text
relocations to be genartion. That message, in turn, messes up running
the art-target tests.

Change-Id: I7fe5dbb8eed458a0f7bd3713566ee38a5db8e904
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
da0a4dbede243c5ac473db88d44ba6139e7dd87e 03-Jan-2014 Ian Rogers <irogers@google.com> Remove extraneous CFI from x86 entrypoints to fix backtrace.

PUSH/POP are macros that already handle cfi save/restore.

Change-Id: I95765e7c4d66acfa2f115ebb343fbab4eca33c08
7410f29b4dae223befac036ea567d7f33351dad1 24-Nov-2013 Mathieu Chartier <mathieuc@google.com> Fix dumpsys meminfo <pid>.

Added a case for BumpPointerSpaces. Confirmed working non-debug.
Should also work in debug builds.

Bug: 11830794
Change-Id: I12053ff16eec403dcd4a780e13095e3212a77132
cbb2d20bea2861f244da2e2318d8c088300a3710 15-Nov-2013 Mathieu Chartier <mathieuc@google.com> Refactor allocation entrypoints.

Adds support for switching entrypoints during runtime. Enables
addition of new allocators with out requiring significant copy
paste. Slight speedup on ritzperf probably due to more inlining.

TODO: Ensuring that the entire allocation path is inlined so
that the switch statement in the allocation code is optimized
out.

Rosalloc measurements:
4583
4453
4439
4434
4751

After change:
4184
4287
4131
4335
4097

Change-Id: I1352a3cbcdf6dae93921582726324d91312df5c9
590fee9e8972f872301c2d16a575d579ee564bee 13-Sep-2013 Mathieu Chartier <mathieuc@google.com> Compacting collector.

The compacting collector is currently similar to semispace. It works by
copying objects back and forth between two bump pointer spaces. There
are types of objects which are "non-movable" due to current runtime
limitations. These are Classes, Methods, and Fields.

Bump pointer spaces are a new type of continuous alloc space which have
no lock in the allocation code path. When you allocate from these it uses
atomic operations to increase an index. Traversing the objects in the bump
pointer space relies on Object::SizeOf matching the allocated size exactly.

Runtime changes:
JNI::GetArrayElements returns copies objects if you attempt to get the
backing data of a movable array. For GetArrayElementsCritical, we return
direct backing storage for any types of arrays, but temporarily disable
the GC until the critical region is completed.

Added a new runtime call called VisitObjects, this is used in place of
the old pattern which was flushing the allocation stack and walking
the bitmaps.

Changed image writer to be compaction safe and use object monitor word
for forwarding addresses.

Added a bunch of added SIRTs to ClassLinker, MethodLinker, etc..

TODO: Enable switching allocators, compacting on background, etc..

Bug: 8981901

Change-Id: I3c886fd322a6eef2b99388d19a765042ec26ab99
bbb32c277b800a8ee378c16a3645ab6d4d19aef1 06-Nov-2013 Dave Allison <dallison@google.com> Add .cfi_restore for assembly functions

Bug: 11256318

This adds .cfi_restore directives to the assembly language functions
for ARM, MIPS and x86.

Change-Id: Ic5a80e190aa6cf2d2fcfaecec14de03221ff386b
ad2541a59c00c2c69e8973088891a2b5257c9780 25-Oct-2013 Mathieu Chartier <mathieuc@google.com> Fix object identity hash.

The object identity hash is now stored in the monitor word after
being computed. Hashes are computed by a pseudo random number
generator.

When we write the image, we eagerly compute object hashes to
prevent pages getting dirtied.

Bug: 8981901

Change-Id: Ic8edacbacb0afc7055fd740a52444929f88ed564
88474b416eb257078e590bf9bc7957cee604a186 24-Oct-2013 Jeff Hao <jeffhao@google.com> Implement Interface Method Tables (IMT).

Change-Id: Idf7fe85e1293453a8ad862ff2380dcd5db4e3a39
1984152ac92aad244ae15184d12f9ceade686b7b 22-Oct-2013 Mathieu Chartier <mathieuc@google.com> Add missing callee save restore to quick entrypoints.

Added callee save restoration to art_quick_proxy_invoke_handler,
art_quick_resolution_trampoline, art_quick_to_interpreter_bridge.

Bug: 8981901

Change-Id: Iaa5bf862834b49cc48bce4f4ffa34a6797024e6d
2a6c7b7c21adcd4493542604305585b852ccf554 16-Oct-2013 Mathieu Chartier <mathieuc@google.com> Restore callee save registers.

The callee saves weren't all being restored as an optimiation, but
this breaks compaction if register promotion is enabled. The reason
for this is that these registers may contain references which the
GC will update.

Change-Id: I810f56b4ed1f92c632155e30c0838269cb95f3c5
a9a8254c920ce8e22210abfc16c9842ce0aea28f 04-Oct-2013 Ian Rogers <irogers@google.com> Improve quick codegen for aput-object.

1) don't type check known null.
2) if we know types in verify don't check at runtime.
3) if we're runtime checking then move all the code out-of-line.

Also, don't set up a callee-save frame for check-cast, do an instance-of test
then throw an exception if that fails.
Tidy quick entry point of Ldivmod to Lmod which it is on x86 and mips.
Fix monitor-enter/exit NPE for MIPS.
Fix benign bug in mirror::Class::CannotBeAssignedFromOtherTypes, a byte[]
cannot be assigned to from other types.

Change-Id: I9cb3859ec70cca71ed79331ec8df5bec969d6745
d9c4fc94fa618617f94e1de9af5f034549100753 02-Oct-2013 Ian Rogers <irogers@google.com> Inflate contended lock word by suspending owner.

Bug 6961405.
Don't inflate monitors for Notify and NotifyAll.
Tidy lock word, handle recursive lock case alongside unlocked case and move
assembly out of line (except for ARM quick). Also handle null in out-of-line
assembly as the test is quick and the enter/exit code is already a safepoint.
To gain ownership of a monitor on behalf of another thread, monitor contenders
must not hold the monitor_lock_, so they wait on a condition variable.
Reduce size of per mutex contention log.
Be consistent in calling thin lock thread ids just thread ids.
Fix potential thread death races caused by the use of FindThreadByThreadId,
make it invariant that returned threads are either self or suspended now.

Code size reduction on ARM boot.oat 0.2%.
Old nexus 7 speedup 0.25%, new nexus 7 speedup 1.4%, nexus 10 speedup 2.24%,
nexus 4 speedup 2.09% on DeltaBlue.

Change-Id: Id52558b914f160d9c8578fdd7fc8199a9598576a
3b4c18933c24b8a33f38573c2ebcdb9aa16efeb5 13-Sep-2013 Hiroshi Yamauchi <yamauchi@google.com> Split the allocation path into 'instrumented' and 'uninstrumented'
ones.

The instrumented path is equivalent to the existing allocation path
that checks for three instrumentation mechanisms (the debugger
allocation tracking, the runtime allocation stats collection, and
valgrind) for every allocation. The uinstrumented path does not
perform these checks. We use the uninstrumented path by default and
enable the instrumented path only when any of the three mechanisms is
enabled. The uninstrumented version of Heap::AllocObject() is inlined.

This change improves the Ritz MemAllocTest by ~4% on Nexus 4 and ~3%
on Host/x86.

Bug: 9986565
Change-Id: I3e68dfff6789d77bbdcea98457b694e1b5fcef5f
468532ea115657709bc32ee498e701a4c71762d4 05-Aug-2013 Ian Rogers <irogers@google.com> Entry point clean up.

Create set of entry points needed for image methods to avoid fix-up at load time:
- interpreter - bridge to interpreter, bridge to compiled code
- jni - dlsym lookup
- quick - resolution and bridge to interpreter
- portable - resolution and bridge to interpreter

Fix JNI work around to use JNI work around argument rewriting code that'd been
accidentally disabled.
Remove abstact method error stub, use interpreter bridge instead.
Consolidate trampoline (previously stub) generation in generic helper.
Simplify trampolines to jump directly into assembly code, keeps stack crawlable.
Dex: replace use of int with ThreadOffset for values that are thread offsets.
Tidy entry point routines between interpreter, jni, quick and portable.

Change-Id: I52a7c2bbb1b7e0ff8a3c3100b774212309d0828e
(cherry picked from commit 848871b4d8481229c32e0d048a9856e5a9a17ef9)
848871b4d8481229c32e0d048a9856e5a9a17ef9 05-Aug-2013 Ian Rogers <irogers@google.com> Entry point clean up.

Create set of entry points needed for image methods to avoid fix-up at load time:
- interpreter - bridge to interpreter, bridge to compiled code
- jni - dlsym lookup
- quick - resolution and bridge to interpreter
- portable - resolution and bridge to interpreter

Fix JNI work around to use JNI work around argument rewriting code that'd been
accidentally disabled.
Remove abstact method error stub, use interpreter bridge instead.
Consolidate trampoline (previously stub) generation in generic helper.
Simplify trampolines to jump directly into assembly code, keeps stack crawlable.
Dex: replace use of int with ThreadOffset for values that are thread offsets.
Tidy entry point routines between interpreter, jni, quick and portable.

Change-Id: I52a7c2bbb1b7e0ff8a3c3100b774212309d0828e
834b394ee759ed31c5371d8093d7cd8cd90014a8 31-Jul-2013 Brian Carlstrom <bdc@google.com> Merge remote-tracking branch 'goog/dalvik-dev' into merge-art-to-dalvik-dev

Change-Id: I323e9e8c29c3e39d50d9aba93121b26266c52a46
7655f29fabc0a12765de828914a18314382e5a35 29-Jul-2013 Ian Rogers <irogers@google.com> Portable refactorings.

Separate quick from portable entrypoints.
Move architectural dependencies into arch.

Change-Id: I9adbc0a9782e2959fdc3308215f01e3107632b7c
166db04e259ca51838c311891598664deeed85ad 26-Jul-2013 Ian Rogers <irogers@google.com> Move assembler out of runtime into compiler/utils.

Other directory layout bits of clean up. There is still work to separate quick
and portable in some files (e.g. argument visitor, proxy..).

Change-Id: If8fecffda8ba5c4c47a035f0c622c538c6b58351