Changes MacroAssembler::GenerateSwitchTable to make sure that 'ra' is properly restored.
BUG=
Review URL: https://codereview.chromium.org/1761863002
Cr-Commit-Position: refs/heads/master@{#34460}
These new stubs perform exactly the same job as the string equality case
for the CompareIC, but are platform independent and usable outside of
fullcodegen and Crankshaft. We use them in the StrictEqualStub and the
StrictNotEqualStub instead of falling back to the runtime immediately
for String comparisons, and we also use them in TurboFan to perform
String equality or inequality comparisons.
These stubs currently handle only internalized and one byte strings w/o
going to C++, but it should be easy to add support for more string cases
later, i.e. utilizing already flattened cons strings or comparing two
byte strings as well.
Review URL: https://codereview.chromium.org/1761823002
Cr-Commit-Position: refs/heads/master@{#34459}
This is more consistent with the current naming scheme (i.e. IsCallable
for callable bit on map, IsConstructor for constructor bit on map, and
now IsUndetectable for undetectable bit on map).
Also simplify the fallthrough case for Object::Equals, because we don't
need to check for Null or Undefined or Undetectable, as both Null and
Undefined already have the undetectable bit set on their maps.
R=machenbach@chromium.org
Review URL: https://codereview.chromium.org/1756413003
Cr-Commit-Position: refs/heads/master@{#34458}
The support was already removed from the Crankshaft and this CL removes the last piece.
Review URL: https://codereview.chromium.org/1764593002
Cr-Commit-Position: refs/heads/master@{#34456}
port 4acb492e14 (r34423)
original commit message:
Initial version of a new StrictEqualStub written as TurboFan code stub,
that implements the full strict equality comparison and is usable for
both TurboFan and Ignition (and soon for the generic CompareIC case
too). The stub is not fully optimized yet, i.e. we still go to the
runtime for string comparisons, but that'll be addressed in a follow-up
CL.
BUG=
Review URL: https://codereview.chromium.org/1762533002
Cr-Commit-Position: refs/heads/master@{#34454}
port c129aa4d39 (r34239)
original commit message:
These macro operators represent a conditional eager deoptimization exit
without explicit branching, which greatly reduces overhead of both
scheduling and register allocation, and thereby greatly reduces overall
compilation time, esp. when there are a lot of eager deoptimization
exits.
BUG=
Review URL: https://codereview.chromium.org/1762483003
Cr-Commit-Position: refs/heads/master@{#34453}
We cannot optimize away ToNumber conversions based on the Type that we
see in Crankshaft, as this might be the (unchecked or even pretruncated)
lower bound. We can only use the HType, which is based on the definition.
R=jkummerow@chromium.org
BUG=chromium:590989
LOG=n
Review URL: https://codereview.chromium.org/1757013002
Cr-Commit-Position: refs/heads/master@{#34445}
Port 4acb492e14
Original commit message:
Initial version of a new StrictEqualStub written as TurboFan code stub,
that implements the full strict equality comparison and is usable for
both TurboFan and Ignition (and soon for the generic CompareIC case
too). The stub is not fully optimized yet, i.e. we still go to the
runtime for string comparisons, but that'll be addressed in a follow-up
CL.
R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
Review URL: https://codereview.chromium.org/1756243002
Cr-Commit-Position: refs/heads/master@{#34444}
The ES2016 draft spec defines a sort of fast path for constructing
a TypedArray based on another TypedArray. This patch implements that
alternative path in TypedArray construction. It is verified by
test262 tests, which now pass. This patch also has a slight cleanup
of TypedArray code by using a macro for TypedArray type checks, as
is done for other types.
This patch includes a minor spec violation: In the same-type case, the
spec indicates that the underlying ArrayBuffer should be copied until
the end, and this is fixed up by making the [[ArrayLength]] shorter.
This is observable with the buffer getter. This patch just copies the
used part of the underlying ArrayBuffer.
R=adamk
BUG=v8:4726
LOG=Y
Review URL: https://codereview.chromium.org/1754593003
Cr-Commit-Position: refs/heads/master@{#34443}
The CompilationPhase helper class is only used in Crankshaft and is not
suitable for use in other compilers. This factors is out into a separate
file and moves it into the "crankshaft" directory.
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1758773002
Cr-Commit-Position: refs/heads/master@{#34441}
There is no reason to keep around the HOptimizedGraphBuilder after the
graph has successfully been built. Later phases in OptimizedCompileJob
should not rely on it anymore.
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1756183002
Cr-Commit-Position: refs/heads/master@{#34440}
Otherwise e.g.,
"use strict";
class C { static f() { super.location = "http://bla.com" }}
C.f.call(this);
will mask location on the hidden prototype of the JSGlobalObject.
BUG=
Review URL: https://codereview.chromium.org/1757933002
Cr-Commit-Position: refs/heads/master@{#34432}
This introduces a new instance type and reorders the JSObject types so any type requiring special LookupIterator support can be identified with a single range check.
In addition, it restructures the Next for better performance, avoiding unnecessary calls.
BUG=
Review URL: https://codereview.chromium.org/1751043002
Cr-Commit-Position: refs/heads/master@{#34429}
This relaxes the constraints of the optimized code map in order to be
able to update existing entries. It also simplifies the interface a
little bit. We can now insert an entry for a newly allocated literals
array together with previously cached context-independent code.
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/1753213002
Cr-Commit-Position: refs/heads/master@{#34427}
Generalize the code that we have for StrictEqualStub to also general a
StrictNotEqualStub and hook that up with TurboFan and Ignition. It's
still falling back to the runtime for every String (in)equality check.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1756793002
Cr-Commit-Position: refs/heads/master@{#34426}
In order to track certain critical code-patters we will start adding
micro-benchmarks that reflect common requests on http://jsperf.com.
In this first CL a number of property enumeration methods are added,
in the hope to get a clearer picture on future regressions.
BUG=
Review URL: https://codereview.chromium.org/1702613002
Cr-Commit-Position: refs/heads/master@{#34425}
The macro is currently used by AllocateHeapNumberStub and AllocateMutableHeapNumberStub, which are now turbofan code stubs.
It can be used to allocate objects in the new or old space, optionally with double alignment.
BUG=588692
LOG=y
Review URL: https://codereview.chromium.org/1735803003
Cr-Commit-Position: refs/heads/master@{#34424}
Initial version of a new StrictEqualStub written as TurboFan code stub,
that implements the full strict equality comparison and is usable for
both TurboFan and Ignition (and soon for the generic CompareIC case
too). The stub is not fully optimized yet, i.e. we still go to the
runtime for string comparisons, but that'll be addressed in a follow-up
CL.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1753173003
Cr-Commit-Position: refs/heads/master@{#34423}
The function literal consists of a list of statements. Each statement
is associated with a statement position including break location. The
only exception to this rule is when the function immediately throws if
scope resolution found an illegal redeclaration. Make sure that we add a
break location for this case as well. The debugger relies on this.
R=bmeurer@chromium.org, vogelheim@chromium.org
BUG=v8:4690
LOG=N
Review URL: https://codereview.chromium.org/1759603002
Cr-Commit-Position: refs/heads/master@{#34422}
port dbf5fffd2d (r34397)
original commit message:
In ia32 PushArgsAndConstruct builtin, we run out of registers and need to
temporarily store the data in the stack. In the earlier implementation,
a location outside the esp was used. This causes a problem if there is a
interrupt/signals which would use the same stack and corrupt the data that
is above the esp. This cl fixes it by pushing it onto the stack so that
the stack pointer is updated and hence the corruption will not happen. We
reuse the slot meant for receiver as a temporary store.
BUG=
Review URL: https://codereview.chromium.org/1756743002
Cr-Commit-Position: refs/heads/master@{#34420}
Rolling v8/tools/clang to a8288b3f25cdc4e3c3f4dd7ea2f7765ae8847459
Rolling v8/tools/swarming_client to df6e95e7669883c8fe9ef956c69a544154701a49
TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
Review URL: https://codereview.chromium.org/1753133002
Cr-Commit-Position: refs/heads/master@{#34418}
Add support to log source position offsets to the profiler. As part of
this change PositionsRecorder is split into two, with the subset needed
by log.cc moved into log.h and the remainder kept in assembler.h as
AssemblerPositionsRecorder. The interpreter's source position table
builder is updated to log positions when the profiler is active.
BUG=v8:4766
LOG=N
Review URL: https://codereview.chromium.org/1737043002
Cr-Commit-Position: refs/heads/master@{#34416}
