| Commit message (Collapse) | Author | Age | Files | Lines |
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Conflicts:
src/qml/compiler/qv4ssa.cpp
src/qml/qml/v8/qqmlbuiltinfunctions.cpp
src/quick/util/qquickprofiler_p.h
Change-Id: I11a89c2a166115d6697adfba09928805643e709e
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When checking for undefined, both the tag and the value need to be
checked. When loading the tag, it shouldn't end up in the same register
that is used to hold the address of the QV4::Value.
Change-Id: I380fce432ba489fdabe569dd2c9cac31e9905260
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Conflicts:
src/quick/items/qquickwindow.cpp
tests/auto/quick/qquicktext/BLACKLIST
tests/auto/quick/qquicktextedit/BLACKLIST
Change-Id: I8bd68b0b5e853b7908791d2cbddd18dd527c76ae
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These two were mixed, but have completely different values.
Task-number: QTBUG-56471
Change-Id: Ifbf6da3032335ea89bfbc3acde17f64a571b9dc0
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Conflicts:
tests/auto/quick/qquicktext/tst_qquicktext.cpp
Change-Id: I241cd418bb7e7b95e0a0a2ee4c465d48be2a5582
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This allows for the OS to use 49 address bits. It also maps JS Undefined
to the C++ nullptr on 64bit.
Task-number: QTBUG-54822
Change-Id: I7cc90620f499be1506a61aac77d72d067308838c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: Ic36f1a0a1436fe6ac6eeca8c2375a79857e9cb12
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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All identifiers starting with an underscore and a capital letter are
reserved to the compiler and must never be used by the user code. Try to
find a better name or, in the worst case, move the underscore to the
last position in these identifiers.
See commit cf63c63d558227fdbef09699c261560e7474f5ea in qtbase for a case
of such an identifier causing a build breakage when the compiler began
treating it specially (it was _Nullable).
Change-Id: I1d0f78915b5942aab07cffff140f9f39c29f0fdf
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
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Where the size of void* was really wanted, use sizeof(void*).
There's only one use of QT_POINTER_SIZE in qtdeclarative now, in fdegen/
main.cpp selecting the ELF size constants. It's easier to keep it like
that than to use C++ selecting constructs. The tool isn't built anyway.
Change-Id: I1d0f78915b5942aab07cffff140fa0f99ce7d7d4
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
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We have a macro for it, so let's use it.
Change-Id: I1d0f78915b5942aab07cffff140fa0ac23392362
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
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This was missing from f21e8c641af6b2d10f0d7e7e0fc6a755dab3673c.
Task-number: QTBUG-48524
Change-Id: I5cc6a979d965a1ef6b7fbc916a7ca9df868b459a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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Where possible, use qEnvironmentVariableIsSet()/
qEnvironmentVariableIsEmpty() instead of checking on the
return value of qgetenv().
Where the value is required, add a check using one of
qEnvironmentVariableIsSet()/Empty().
Change-Id: Ia8b7534e6f5165bd8a6b4e63ccc139c42dd03056
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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Use character literals where applicable.
Change-Id: I294fc4cb5cbbd23df9735ba2b398118f37cbe08a
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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For more information on what this is, see:
https://github.com/torvalds/linux/blob/master/tools/perf/Documentation/jit-interface.txt
[ChangeLog][QtQml][Profiling] QtQml can now write additional information so that
perf is able to give function names of JavaScript methods when profiling. To
enable this, set the environment variable QV4_PROFILE_WRITE_PERF_MAP=1 when
running the process in question.
Change-Id: I187c9b0792f40d93c89a986c0edb3c4487095cb7
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>
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This brings us one step closer to getting rid of the
QQmlContextWrapper.
Change-Id: Ied57f4c174c2ebd95096310a4ad4c0c28787e7a4
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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And get rid of another temp in the IR.
Change-Id: I039393e020e5141f1986aee276246c30fd8057f3
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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Add some runtime methods to access properties of the scope
object directly (using the QmlContext), and generate proper
code to call those.
Change-Id: I0b29357c9a3b9ad53ba568ec6cb763e8ecb10f21
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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Our generated code (JIT and interpreter) should operate on the
QML context to retrieve QML related things. That's better than
operating on 4 different temps.
So this commit introduces the QML context as a temp in the
code we generate for QML. The next commits will move things over
to use that context with specialized runtime methods instead of
using generic subscript/get calls on the different subobjects.
Change-Id: Ia05cf339de9cdd23003f35cf78ede17d2590f8de
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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The union in QV4::Value is used to do type punning. In C++, this is
compiler-defined behavior. For example, Clang and GCC will try to detect
it and try to do the proper thing. However, it can play havoc with Alias
Analysis, and it is not guaranteed that some Undefined Behavior (or
Compiler depenedent behavior) might occur.
The really problematic part is the struct inside the union: depending on
the calling convention and the register size, it results in some
exciting code. For example, the AMD64 ABI specifies that a struct of two
values of INTEGER class can be passed in separate registers when doing a
function call. Now, if the AA in the compiler looses track of the fact
that the tag overlaps with the double, you might get:
ecx := someTag
... conditional jumps
double_case:
rdx := xorredDoubleValue
callq someWhere
If the someWhere function checks for the tag first, mayhem ensues: the
double value in rdx does not overwrite the tag that is passed in ecx.
Changing the code to do reinterpret_cast<>s might also give problems
on 32bit architectures, because there is a double, whose size is not the
same as the size of the tag, which could confuse AA.
So, to fix this, the following is changed:
- only have a quint64 field in the QV4::Value, which has the added
benefit that it's very clear for the compiler that it's a POD
- as memcpy is the only approved way to ensure bit-by-bit "conversion"
between types (esp. FP<->non-FP types), change all conversions to use
memcpy. Use bitops (shift/and/or) for anything else.
- only use accessor functions for non-quint64 values
As any modern compiler has memcpy as an intrinsic, the call will be
replaced with one or a few move instructions. The accessor functions
also get inlined, the bitops get optimized, so in all cases the compiler
can generate the most compact code possible.
This patch obsoletes f558bc48585c69de36151248c969a484a969ebb4 (which had
the exact aliassing problem of the double and the tag as described
above).
Change-Id: I60a39d8564be5ce6106403a56a8de90943217006
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>
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Rename QQmlRefPointer::take to adopt, as it's a better fit with
the semantics. Get rid of the assignment operator from a raw pointer
and add a Adopt argument to the constructor.
Change-Id: Ia1ebe42b24570f32543e783f91eb3206602772a2
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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[ChangeLog][QtQml] Enabled Just-In-Time compilation for JavaScript on MIPS
Change-Id: Idce070f29645760d6376767ef67e4592828c104d
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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When throwing an exception, we ended up having junk data in
the return value register. That could end up being written
onto the JS stack when returning from the function, and then
causing crashes in the garbage collector afterwards.
Fix it by returning undefined in case we throw an exception.
Change-Id: Ice380f2de673b179c1e2c98fbeb87e47347ef520
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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Change-Id: I61ebeab024cd3e31e9d94810454328b4e8d48364
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I61120571787870c0ed17066afb31779b1e6e30e9
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
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It is the change to DataLog.h, which in turn forces the other changes in
order to match types.
Change-Id: Ie17e7efbd6a4d380a3b7383b0fd0243c6f68d0d5
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: Ic043e256c3df984bb06c9a16b86573b0173b19a1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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This way even paranoid Androids can be show interesting stuff.
Task-number: QTBUG-43109
Change-Id: Ib0ef9e8f6c6fc66e9ea9bfcaf2cd9e33d7469070
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Conflicts:
src/qml/jsruntime/qv4arraydata.cpp
src/qml/jsruntime/qv4context_p.h
src/qml/jsruntime/qv4globalobject.cpp
src/qml/jsruntime/qv4internalclass.cpp
src/quick/items/qquicktext_p.h
src/quick/items/qquicktextedit_p.h
src/quick/items/qquicktextinput_p.h
Change-Id: If07e483e03197cb997ef47a9c647a479cdb09f4c
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On x86 we assume that ebx holds the address of the global offset table for
position independent code. So before placing a run-time call we restore the
register from it's position we saved it on earlier on the stack. However after
commit d9f33ccdef985badc56fd8940373748626beffc7 the register wasn't saved on the
stack anymore in the prologue because we skipped because it's caller saved. So
when we seemingly reloaded ebx with the GOT from the stack, we loaded it from a location
we never saved it to. This patch makes sure to always save it on the stack so that
we can always restore it.
Change-Id: I8f6a8e38779151fff517f17220f29a7cb45ca89d
Task-number: QTBUG-43036
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>
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Changed runtimeStrings to be an array of Heap::String pointers instead of
indirect String pointers. Later that member along with other GC related members
will go into a managed subclass. Meanwhile the generated code no more loads
String pointers directly but just passes the index into the run-time strings to
the run-time functions, which in turn will load the heap string into a scoped
string.
Also replaced the template<T> Value::operator=(T *m) with a non-template
overload that takes a Managed *, in order to help the compiler choose the
non-template operator=(Heap::Base *) overload. This allows removing a bunch
of Value::fromHeapObject calls.
Change-Id: I20415c0549d33cca6813441a2495976b66d4c00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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This makes a lot more sense in the long term and is the
more maintainable solution, once the GC starts moving
objects around in memory
Change-Id: I8f327c0f5b5b0af38c5fe1a217852ee8c4a5c2fc
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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In the QQmlScriptString we store the binding id and it is an index into the
runtimeFunctions array of the compilation unit. However we don't store the
compilation unit and instead in QQmlBinding and QQmlExpression try to retrieve
it from the cache via the context url (we have the context after all). That
turns out to be not a reliable way, as sometimes the URL might slightly differ
from the originally compiled cache (qrc:/// turning to qrc:/ maybe).
Consequently the type is (unnecessarily) compiled again and unfortunately not
_linked_, therefore the runtime functions array is empty. Another option is
that when the component was created from a QByteArray, then no entry exists in
the cache in the first place.
This patch addresses the problem by storing a reference to the compilation unit
in the QQmlContextData. That we can safely retrieve and it'll make sure the
compilation unit also stays alive.
In the process of that the manual reference counting was switched over to
QQmlRefCount and QQmlRefPointer for QV4::CompilationUnit.
Task-number: QTBUG-41193
Change-Id: I9111f9a3b65618e453954abcd789c039e65a94f7
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Windows CE does not have vsnprintf, so
use qvsnprintf instead.
Change-Id: I30ddbf2469424ec174903f0cce2b482c652b5d22
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3 & LICENSE.GPLv2
- Removed LICENSE.GPL
Change-Id: I84a565e2e0caa3b76bf291a7d188a57a4b00e1b0
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
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This is not used yet by any platform/abi we support, because we do not
define any callee-saved FP registers. Yet.
Change-Id: I5857a452456175398c5e9681ff33800b9431b9da
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Instead of saving all possibly used ones. Note that floating point
registers are not saved yet, as we don't support callee-saved FP
registers yet.
Change-Id: I1db2ba2513f7b466c64ec103eda0c464269247b0
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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... with the regular (non-FP) registers that need to be saved. This
patch shouldn't change any of the JIT generated code, because all
regular callee saved registers are passed in.
Change-Id: Id11b8f37f06d80e8015ac6f0d0ccefdfa3342cbe
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: I5e88fb3df7b01f4f515ce4d2e451a5a6f5ba92ad
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Generate better code for in-place binary operations where the right-hand
side is either a constant or a memory address. Now that the JIT can do
this, also tell the register allocator not to un-spill that right-hand
side.
Change-Id: I0ab852f6b92f90dfed99c05fbaf91aad2549ecf4
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: Icbdf06a077014db5dd57cba42f84591433ec4196
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Remove the Ref classes, as they won't be required
anymore once Managed and Managed::Data are separated.
Change-Id: Ic6bec2d5b4ecf2595ce129dbb45bbf6a385138a5
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: I9fcc13da5360f37cef3149b114ed9263b9b74281
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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The coverity scan utility didn't understand the code flow and assumed
the compiledData would be leaked. Use a QScopedPointer and have the
::backendCompileStep() forward the ownership. From what I see the code
has not leaked memory.
Fixes: CID 10605, CID 10607
Change-Id: I7759f681871bbe12e2aa320a5f39c47c70f4e4e0
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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After running register allocation, the IR is printed one last time (when
the environment variable QV4_SHOW_IR is set). This will now use the
platform defined register names, e.g. "ebx" or "d2".
Change-Id: I2f2f4536d1de940a69690056e5165d38fa7910bb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Change-Id: Ia9faeb20b360f41d00f908132fd306e2d25c7574
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Consider:
function f() {
var a;
a();
}
Here the constant propagation will propagate the value for a (undefined)
to the call site. This was not yet handled, resulting in Q_UNIMPLEMENTED
warnings when running a debug build.
Change-Id: I5f85f681d975b54df7a9e00bd5b50e6f4350139a
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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All constants referring to registers and all constants and functions
that do platform specific things with the stack, are all modev into a
separate file. Information about how a specific platform register is
used by the ABI is also extended and is now captured in the RegisterInfo
class. Usage of this information will be extended in subsequent patches.
This also fix ARM register usage:
- Correct fp register for Thumb mode.
- Only push registers that have to be saved and will actually be used
from the stack (i.e. do not push r0-r3 in the function prelude).
Change-Id: Ia372505ade8f2648595c7aec1d281955392f34a1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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There are a couple of reasons to split the temporaries off from the
arguments and locals:
Temporaries are invisible, and changes to them cannot be observed.
On the other hand, arguments and locals are visible, and writes to them
can be seen from other places (nested functions), or by using the
arguments array. So, in practice these correspond to memory locations.
(One could argue that if neither nested functions, nor eval(), nor
arguments[] is used, the loads/stores are invisible too. But that's an
optimization, and changing locals/arguments to temporaries can be done
in a separate pass.)
Because of the "volatile" nature of arguments and locals, their usage
cannot be optimized. All optimizations (SSA construction, register
allocation, copy elimination, etc.) work on temporaries. Being able to
easily ignore all non-temporaries has the benefit that optimizations can
be faster.
Previously, Temps were not uniquely numbered: argument 1, local 1, and
temporary 1 all had the same number and were distinguishable by their
type. So, for any mapping from Temp to something else, a QHash was used.
Now that Temps only hold proper temporaries, the indexes do uniquely
identify them. Add to that the fact that after transforming to SSA form
all temporaries are renumbered starting from 0 and without any holes in
the numbering, many of those datastructures can be changed to simple
vectors. That change gives a noticeable performance improvement.
One implication of this change is that a number of functions that took
a Temp as their argument, now need to take Temp-or-ArgLocal, so Expr.
However, it turns out that there are very few places where that applies,
as many of those places also need to take constants or names. However,
explicitly separating memory loads/stores for arguments/locals from
temporaries adds the benefit that it's now easier to do a peep-hole
optimizer for those load/store operations in the future: when a load is
directly preceded by a store, it can be eliminated if the value is
still available in a temporary.
Change-Id: I4114006b076795d9ea9fe3649cdb3b9d7b7508f0
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: I1214586499ab2876c8bc55a99367a0c938c8b919
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JSC was using r3 as the address scratch register, which collides with
the 4th parameter in a function call. This sometimes shows up when
generateFunctionCall needs to do a calulated jump.
Also fix the usage of r11, which seems to be the fp on some platforms.
Change-Id: Ib2ea64b9342e5aa631db6a7641747f899b2fbd89
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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