Fixes the case when the 'imm' is in range [8000,ffff], as the specification
says the 'imm' is sign-extended before the comparsion, so the effective range
is [max_unsigned-7fff,max_unsigned].
TEST=mjsunit/generated-transition-stub@3b8ad45e
BUG=
Review-Url: https://codereview.chromium.org/2386673002
Cr-Commit-Position: refs/heads/master@{#39922}
matching function, creates a hashmap the specialises the case of keys
that simply check pointer equality.
I measure an average ~1% improvement on Octane code-load.
Review-Url: https://codereview.chromium.org/2369963002
Cr-Commit-Position: refs/heads/master@{#39920}
This ports the platform-specific SubStringStub to TurboFan.
It also contains a minor bug-fix for the case when the requested substring
length equals the subject string length, but the start index is not equal to 0.
The old stub implementation returned the subject string, while the new
implementation calls into runtime, which finally results in a thrown exception.
BUG=v8:5415
Committed: https://crrev.com/49be31921536716706a6790fbbf9c346b975af16
Review-Url: https://codereview.chromium.org/2355793003
Cr-Original-Commit-Position: refs/heads/master@{#39653}
Cr-Commit-Position: refs/heads/master@{#39851}
Reason for revert:
Speculative revert because of stability problems
Original issue's description:
> [stubs] Port SubStringStub to TurboFan
>
> This ports the platform-specific SubStringStub to TurboFan.
>
> It also contains a minor bug-fix for the case when the requested substring
> length equals the subject string length, but the start index is not equal to 0.
> The old stub implementation returned the subject string, while the new
> implementation calls into runtime, which finally results in a thrown exception.
>
> BUG=v8:5415
>
> Committed: https://crrev.com/49be31921536716706a6790fbbf9c346b975af16
> Cr-Commit-Position: refs/heads/master@{#39653}
TBR=ishell@chromium.org,bmeurer@chromium.org,jgruber@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5415, chromium:649967
NOPRESUBMIT=true
NOTRY=true
Review-Url: https://codereview.chromium.org/2365413002
Cr-Commit-Position: refs/heads/master@{#39737}
According to new store IC calling convention the value, slot and vector are passed
on the stack and there's no need in trying to preserve values or respective registers
in store handlers.
Nice bonus: we also don't need virtual registers anymore.
BUG=v8:5407
Review-Url: https://codereview.chromium.org/2357323003
Cr-Commit-Position: refs/heads/master@{#39672}
The running time of optdebug.quickcheck is improved by 8% while a more strict DCHECKing is kept in simulator.
Review-Url: https://codereview.chromium.org/1349403003
Cr-Commit-Position: refs/heads/master@{#39667}
This ports the platform-specific SubStringStub to TurboFan.
It also contains a minor bug-fix for the case when the requested substring
length equals the subject string length, but the start index is not equal to 0.
The old stub implementation returned the subject string, while the new
implementation calls into runtime, which finally results in a thrown exception.
BUG=v8:5415
Review-Url: https://codereview.chromium.org/2355793003
Cr-Commit-Position: refs/heads/master@{#39653}
This cleanup is necessary to make HCallWithDescriptor support passing arguments on the stack.
BUG=v8:5407
Review-Url: https://codereview.chromium.org/2352163004
Cr-Commit-Position: refs/heads/master@{#39590}
Due to a typo, long branches were emitted instead of short branches, and the
code would stop working at all in the situation when long branches must be
emitted. This patche fixes this issue.
TEST=mjsunit/wasm/embenchen/lua_binarytrees
BUG=
Review-Url: https://codereview.chromium.org/2351143002
Cr-Commit-Position: refs/heads/master@{#39552}
This CL also cleans up related interface descriptors:
1) unused StoreTransitionDescriptor is removed and VectorStoreTransitionDescriptor is
renamed to StoreTransitionDescriptor.
2) on ia32/x87 architectures slot and vector are passed on the stack (dispatcher/handlers
cleanup will be addressed in a separate CL).
These two stub ports have to be combined in one CL because:
1) without changing the StoreTransitionDescriptor TF was not able to compile them
on ia32/x87 (because of lack of registers),
2) it was not possible to change the descriptor first because Crankshaft was not able
to deal with the stack allocated parameters in case of a stub failure.
TBR=jkummerow@chromium.org
BUG=v8:5269
Review-Url: https://codereview.chromium.org/2313093002
Cr-Commit-Position: refs/heads/master@{#39476}
To make better inlining decisions, it's good to have call counts for poly/mega-morphic cases. This CL makes it work for calls, and another will follow to better unify the code between constructor calls and normal calls (and thence, to record megamorphic call counts there as well).
BUG=
Review-Url: https://codereview.chromium.org/2325083003
Cr-Commit-Position: refs/heads/master@{#39377}
Adds support to collect allocation site feedback for Array function calls
to the call bytecode handler.
BUG=v8:4280, v8:4780
LOG=N
Review-Url: https://codereview.chromium.org/2307903002
Cr-Commit-Position: refs/heads/master@{#39283}
This way we avoid the cyclic dependency between objects.h and heap.h and still
have one definition. Add a static assert that this size is indeed smaller than
the payload of a page.
Follow ups can finally remove the dependency on spaces.h for all heap.h users.
R=ulan@chromium.org,bmeurer@chromium.org,vogelheim@chromium.og
Review-Url: https://codereview.chromium.org/2311203002
Cr-Commit-Position: refs/heads/master@{#39206}
Collect type feedback in the bytecode handler for 'new' bytecode. The
earlier cl (https://codereview.chromium.org/2153433002/) was reverted
because that implementation did not collect allocation site feedback.
This regressed delta blue by an order of magnitude. This implementation
includes collection of allocation site feedback.
Reland of https://codereview.chromium.org/2190293003/ with a bug fix.
BUG=v8:4280, v8:4780
LOG=N
Review-Url: https://codereview.chromium.org/2225923003
Cr-Commit-Position: refs/heads/master@{#39120}
For arch variants loongson and r1 neg instruction does not change the
sign for NaN-like operands, the same as r2 neg. This fix adjusts macro
assembler Neg_s and Neg_d arch variant logic so the correct code would
be generated for loongson and r1.
BUG=
Review-Url: https://codereview.chromium.org/2287333002
Cr-Commit-Position: refs/heads/master@{#39007}
These DCHECKs were causing several test failures or r6. They should not
be here because only NEG.PS format was removed in r6, NEG.S and NEG.D
instructions remain.
BUG=
Review-Url: https://codereview.chromium.org/2276563006
Cr-Commit-Position: refs/heads/master@{#38944}
Floating point negate instructions are still present in release 6, only
one format of neg is removed, NEG.PS. Others formats can be used and in
r6 they also change the sign of NaN-like operands as well. This makes r6
generated code simpler for Neg_d and Neg_s macroassembler functions.
BUG=
Review-Url: https://codereview.chromium.org/2285703002
Cr-Commit-Position: refs/heads/master@{#38943}
Drive-by fix: the order of parameters in the BinaryOpWithFeedback TurboFan code stubs now reflects the convention of having the context at the end.
BUG=v8:5273
Review-Url: https://codereview.chromium.org/2263253002
Cr-Commit-Position: refs/heads/master@{#38832}
Rebuilding (after touching certain files) is crazy slow because
includes are out of control.
Fixing it:
- Don't include stuff in headers unless necessary.
- Include the stuff you need, not some other stuff that happens to include the
stuff you need.
BUG=v8:5294
Review-Url: https://codereview.chromium.org/2258603003
Cr-Commit-Position: refs/heads/master@{#38770}
Implement Neg_d and Neg_s in macro-assembler.
Floating point negate instructions are removed in release 6.
On r2, these instructoin do not change the sign of NaN operands.
TEST=cctest/test-run-wasm/RunWasmCompiled_Float32Neg, cctest/test-run-wasm/RunWasmCompiled_Float64Neg
BUG=
Review-Url: https://codereview.chromium.org/2256963003
Cr-Commit-Position: refs/heads/master@{#38749}
Port 77c9cb8341.
Original commit message:
This commit fixes wasm little-endian load issue on big-endian platform
by introducing reverse byte operation immediately after a load.
BUG=
Review-Url: https://codereview.chromium.org/2235703002
Cr-Commit-Position: refs/heads/master@{#38660}
The hand-written KeyedLoadIC_Megamorphic stub didn't care about JSArray
lengths, which made it lenient towards said lengths being wrong, but it
will soon fix that bug and thereby become more strict.
LiveEdit: factory->NewJSArray(capacity) doesn't set a length, so set it
manually.
RegExp: to avoid having to take care of array length updating in the
RegExpExecStub, just use a JSObject instead.
Review-Url: https://codereview.chromium.org/2244673002
Cr-Commit-Position: refs/heads/master@{#38624}
Implement Bovc and Bnvc instruction macros in macro assembler.
The change 6f920d7d59 revealed an issue with AddBranchOvf for mips R6.
All branching instructions other than BOVC and BNVC are handled by Branch macro, which assures
correct handling of long and short branches. As a consequence, AddBranchOvf for R6 was working correctly
only before trampoline was emitted, but the case of long branch was not handled at all. Implemented
instruction macros enable proper handling of BOVC and BNVC in cases when long branching is needed.
TEST=test/intl/general/case-mapping.js
BUG=
Review-Url: https://codereview.chromium.org/2225323002
Cr-Commit-Position: refs/heads/master@{#38513}
This CL changes the semantics of FloatXXSub to match the semantics of
the semantics of FloatXXSubPreserveNan. Therefore there is no need
anymore for the FloatXXSubPreserveNan operators.
The optimizations in VisitFloatXXSub which are removed in this CL have
already been moved to machine-operator-reducer.cc in
https://codereview.chromium.org/2226663002R=bmeurer@chromium.org
Review-Url: https://codereview.chromium.org/2220973002
Cr-Commit-Position: refs/heads/master@{#38437}
Reason for revert:
[Sheriff] Fails on nosnap debug:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/8403
Original issue's description:
> [Interpreter] Collect type feedback for 'new' in the bytecode handler
>
> Collect type feedback in the bytecode handler for 'new' bytecode. The
> earlier cl (https://codereview.chromium.org/2153433002/) was reverted
> because that implementation did not collect allocation site feedback.
> This regressed delta blue by an order of magnitude. This implementation
> includes collection of allocation site feedback.
>
> BUG=v8:4280, v8:4780
> LOG=N
>
> Committed: https://crrev.com/9d5e6129c4c7f9cbfe81a5fad2a470f219fe137c
> Cr-Commit-Position: refs/heads/master@{#38364}
TBR=bmeurer@chromium.org,rmcilroy@chromium.org,balazs.kilvady@imgtec.com,mythria@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4280, v8:4780
Review-Url: https://codereview.chromium.org/2212343002
Cr-Commit-Position: refs/heads/master@{#38368}
Collect type feedback in the bytecode handler for 'new' bytecode. The
earlier cl (https://codereview.chromium.org/2153433002/) was reverted
because that implementation did not collect allocation site feedback.
This regressed delta blue by an order of magnitude. This implementation
includes collection of allocation site feedback.
BUG=v8:4280, v8:4780
LOG=N
Review-Url: https://codereview.chromium.org/2190293003
Cr-Commit-Position: refs/heads/master@{#38364}
A corresponding flag was added as well to help us find out what breaks when we
do not clear pending exceptions on each JS entry.
BUG=5259
Review-Url: https://codereview.chromium.org/2208663002
Cr-Commit-Position: refs/heads/master@{#38292}
This will enable the interpreter to add a bytecode and use the stub.
BUG=v8:4280
LOG=n
Review-Url: https://codereview.chromium.org/2177273002
Cr-Commit-Position: refs/heads/master@{#38219}
In the process also inline the stub into the appropriate interpreter bytecode
handler and make sure that the context register is preserved in hand-written
assembly code that calls the stub and expects the context register to be
preserved.
BUG=608675
Review-Url: https://codereview.chromium.org/2188993003
Cr-Commit-Position: refs/heads/master@{#38132}
Fix failure in mjsunit/regress/regress-5213. When bailout happens,
the double registers are not properly loaded if exponent_type() is
INTEGER (this happens in optimized version of code only).
BUG=mjsunit/regress/regress-5213
Review-Url: https://codereview.chromium.org/2175633003
Cr-Commit-Position: refs/heads/master@{#38013}
Port 8e18a5f2a0
Failing on r6 due to wrong registers used in macro assembler.
TEST=test-run-machops/RunInt32MulWithOverflowImm
BUG=
Review-Url: https://codereview.chromium.org/2165533002
Cr-Commit-Position: refs/heads/master@{#37861}
So far TurboFan wasn't adding the deoptimization reasons for eager/soft
deoptimization exits that can be used by either the DevTools profiler or
the --trace-deopt flag. This adds basic support for deopt reasons on
Deoptimize, DeoptimizeIf and DeoptimizeUnless nodes and threads through
the reasons to the code generation.
Also moves the DeoptReason to it's own file (to resolve include cycles)
and drops unused reasons.
R=jarin@chromium.org
Review-Url: https://codereview.chromium.org/2161543002
Cr-Commit-Position: refs/heads/master@{#37823}
All stores require a Slot parameter so VectorStoreICTrampolineDescriptor is a new StoreDescriptor.
VectorStoreICDescriptor renamed to StoreWithVectorDescriptor.
Review-Url: https://codereview.chromium.org/2147043002
Cr-Commit-Position: refs/heads/master@{#37779}
