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Updated Yarr to a to commit
4d2a53d60487cb1f8b2a9a1e9f684af336fd7d2c in WebKit.
Adjusted the yarr code base to work with our older version of
wtf and masm.
Change-Id: I04b4593ece051e1d7aa087b87aa08c92595d1098
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Replace the use of size(void*) with target assembler specific values for
the pointer size, when calculating offsets into the stack for
poke/peek/push/pop and placing arguments onto the stack before calling
functions.
Change-Id: I3aff540f0083967e75b61e0c29dbeb4d9ecfa433
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Even when the C++ target is not ARMv7 we want to include it in order to
be able to generate QML cache files with code ahead of time.
This requires a few changes:
* The Jump classes need to move from the AbstractMacroAssembler
super-class into the concrete assembler sub-class, in order to
use it in specializations.
* Some of the template specializations in LinkBuffer for example or
for platform dependent operations need to be pre-processor enabled
when bootstrapping
* The generic loadPtr/addPtr etc. functions need to move to the concrete
assemblers to be able to call the correct 32-bit or 64-bit variations.
* We need to force what looks like a loss of precision to the compiler
in the 32-bit ARMv7 linking code when linking jumps.
Finally then we can explicitly instantiate at least QV4::JIT::Assembler
for ARMv7 when bootstrapping. Currently only on x86-64 hosts, but that
is a temporary limitation.
Change-Id: I501db2360e1fded48f17f17d9e87252d47f8537e
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Since the #ifdef for ARMv7 and ARM64 makes it impossible to cross
compile, we need to replace it with a template specialization of
LinkBuffer. The "old" LinkBuffer becomes LinkBufferBase, then there's a
generic LinkBuffer that's a sub-class of LinkBufferBase. Then there's a
BranchCompactingLinkBuffer template that implements the compaction and
two ARMv7 and ARM64 specializations of LinkBuffer<T> end up being
sub-classes of BranchCompactingLinkBuffer instead of LinkBufferBase.
Change-Id: Ib62fe24aa6c3570dfa311edc39fde6fb5975f3cc
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Unfortunately the link buffer depends on target platform types.
Change-Id: Idb49e72e8e864c709293a7b315dff948bc58e62a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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It turns out that in QML it is not unusual that during early binding
evaluations due to the undefined order, the evaluation tries to look up
properties in objects that aren't initialized yet and thus exceptions are
thrown. Eeach thrown exception saves a stack trace, which is expensive to
generate when using the JIT, as it does full stack unwinding.
This patch implements a more light-weight approach by storing the instruction
pointer in the context before leaving JIT generated code.
Change-Id: I95e1cfd01179247dfc2c1df949828f474a23161b
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Performance improves by about 15% on fact.3.js when Qt is build in
debug mode.
Change-Id: I4a1c868fe211c1e0f9e7d9a5652f7726b37405d1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Only on X86, and still untested.
Change-Id: I746daa47ed019ce0017a67a228a719983b1ebaa6
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: Ie6c918730d0ece0e9e63254ae97c257ee013f2f4
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Change-Id: I507cd5707b7d7223a0d901cf939896fb2649b684
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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