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Change-Id: I691b8ddff60b5f16f06d32b379c76e87f44f84a9
Reviewed-by: Kai Koehne <kai.koehne@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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- 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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There are two changes in this patch, that go hand-in-hand. First, when
re-numbering the statements in order of occurrence in the scheduled
basic-blocks, the (new) position is not stored in the statement itself,
but in the LifeTimeIntervals class. This makes it possible to re-use
information gathered during SSA formation or optimization.
The re-numbering itself has also changed, resulting in some minor
changes to the life-time interval calculation. The new numbering
is described in LifeTimeIntervals::renumber(). The reason is to make it
easy for the register allocator and stack-slot allocator to distinguish
between definition of a temporary and its uses. Example:
20: %3 = %2 + %1
22: print(%3)
If the life-time of %2 or %1 ends at 20, then at the point that %3 gets
assigned, it can re-use the storage occupied by %1 or %2. Also, when
both %1 and %2 need to get a register assigned (because they were
spilled to the stack, for example), %3 should be allocated "after" both
%1 and %2. So, instead of having a closed interval of [20-22] for %3, we
want to use an open interval of (20-22]. To simulate the "open" part, the
life-time of %3 is set to [21-22]. So, all statements live on even
positions, and temporaries defined by a statement start at
statmentPosition + 1.
Change-Id: I0eda2c653b0edf1a529bd0762d338b0ea9a66aa0
Sanity-Review: Qt Sanity Bot <qt_sanitybot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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QQmlJS::MASM -> QV4::JIT
QQmlJS::V4IR -> QV4::IR
Change-Id: I707e8990459114a699c200fe3c22cec3c8df1afc
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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Also added some "white-box" unit tests and sprinkled in a bit of
documentation. The case that went wrong is covered by the test
rangeSplitting_1: before the fix, the new interval would have
two ranges: [66-64],[70-71]. The first range is invalid and should not
be there at all.
Change-Id: If0742f4e6a96d98ea5d696f95126886ba66f92bb
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
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