| 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
|
| ab9a0dbf3b63d517da5278b8298e6cd316e09f68 |
|
14-Aug-2014 |
Dave Allison <dallison@google.com> |
Revert "Reduce stack usage for overflow checks"
This reverts commit 63c051a540e6dfc806f656b88ac3a63e99395429.
Change-Id: I282a048994fcd130fe73842b16c21680053c592f
|
| 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
|
| 83b1940e6482b9d8feba5c492507735686650ea5 |
|
14-Aug-2014 |
Dave Allison <dallison@google.com> |
Revert "Reduce stack usage for overflow checks"
This reverts commit 63c051a540e6dfc806f656b88ac3a63e99395429.
Change-Id: I282a048994fcd130fe73842b16c21680053c592f
|
| 04f4d8abe45d6e79eca983e057de76aea24b7df9 |
|
30-May-2014 |
Wei Jin <wejin@google.com> |
Add an optimization for removing redundant suspend tests in ART
This CL:
(1) eliminates redundant suspend checks (dominated by another check),
(2) removes the special treatment of the R4 register, which got
reset on every native call, possibly yielding long execution
sequences without any suspend checks, and
(3) fixes the absence of suspend checks in leaf methods.
(2) and (3) increase the frequency of suspend checks, which improves
the performance of GC and the accuracy of profile data. To
compensate for the increased number of checks, we implemented an
optimization that leverages dominance information to remove
redundant suspend checks on back edges. Based on the results of
running the Caffeine benchmark on Nexus 7, the patch performs
roughly 30% more useful suspend checks, spreading them much more
evenly along the execution trace, while incurring less than 1%
overhead. For flexibility consideration, this CL defines two flags
to control the enabling of optimizations. The original
implementation is the default.
Change-Id: I31e81a5b3c53030444dbe0434157274c9ab8640f
Signed-off-by: Wei Jin <wejin@google.com>
|
| b132ec5bba1a14d77fa11574df8dc593ae12a643 |
|
01-May-2014 |
Andreas Gampe <agampe@google.com> |
Add heap reference size to the checks in arch_test
As we will potentially make heap references larger than 32b on 64b
systems at some point, add a constant to the .h files that describes
what the current assembly implementation assumes about the size of
heap references, and check whether that agrees with sizeof.
Change-Id: I75ffd7e2b59891ec36977fd831a8d5faac69c76d
|
| 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
|
| dd7624d2b9e599d57762d12031b10b89defc9807 |
|
15-Mar-2014 |
Ian Rogers <irogers@google.com> |
Allow mixing of thread offsets between 32 and 64bit architectures.
Begin a more full implementation x86-64 REX prefixes.
Doesn't implement 64bit thread offset support for the JNI compiler.
Change-Id: If9af2f08a1833c21ddb4b4077f9b03add1a05147
|
| 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
|
| 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
|