All files get default significance: they do no parsing, no code
execution, no cryptography and no network protocols
implementation.

Note that the compiler classes use the QML parser from src/qml/parser,
and therefore do no parsing themselves.

Pick-to: 6.11 6.10 6.8
Fixes: QTBUG-143929
Change-Id: If1d4b896ec4a70fa2d4348a484464dcd4d8ef017
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

Since QVector is just an alias, let's finally do what we could have
done for Qt 6.0.

Pick-to: 6.11
Change-Id: Ia9dbc8ecf4f099339cf7639acb22c14b24fa680b
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>

We will need the statement indices when tracking value type references.
New value type references shall only be written back in the same
statement they were created in.

Task-number: QTBUG-99766
Change-Id: I83f908df034e7da8ba46ccacaa29bd9d78020d20
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.

Pick-to: 6.4
Task-number: QTBUG-67283
Change-Id: I63563bbeb6f60f89d2c99660400dca7fab78a294
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

This is often faster than resizing on demand.

Task-number: QTBUG-89513
Change-Id: Ie125df2bfc25db73fc3d92040b21a526a3a65f4b
Reviewed-by: Nick Shaforostov <mshaforostov@airmusictech.com>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

This is required for better warnings in qmlcompiler's type propagator.
Remains optional as to not consume superfluous memory when not needed (during normal QML engine operation).

Change-Id: I50293f878e4f6659935925f5f2266427d2f64d7b
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>

This is needed in a few places outside of declarative, so this change
restores the loc member in DiagnosticMessage and moves
QQmlJS::AST::SourceLocation into common's QQmlJS namespace/directory.
QQmlError is unaffected and retains only line/column.

Amends d4d197d06279f9257647628f7e1ccc9ec763a6bb

Change-Id: Ifb9d344228e3c6e9e26fc4fe112686f9336ea2b2
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

qml_debug is about the runtime debug support. Even if it's not running
in debug mode itself, the compiler should still be able to generate
debug instructions to be interpreted later by a potentially debugging
runtime.

Change-Id: Ided5ff8ef9ce820de204e8a967ddeddad3fea5d5
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

When analyzing the bytecode from top-to-bottom in a single pass, we
don't know when a jump back to previously seen code occurs. For example,
in the baseline JIT we would already have generated code for some
bytecode when we see a jump back (like at the end of a loop body), and
we can't go back and insert a label to jump to.

As JavaScript has no goto's, the only backward jumps are at the end of
loops, so there are very few cases where we need to actually generate
labels.

This was previously handled by analyzing the bytecode twice: once to
collect all jump targets, and then second pass over the bytecode to do
the actual JITting (which would use the jump targets to insert labels).
We can now do that with one single pass. So the trade-off is to store
4 bytes more per function plus 4 bytes for each loop, instead of having
to analyze all functions only to find where all jumps are each time that
function is JITted.

Change-Id: I3abfcb69f65851a397dbd4a9762ea5e9e57495f6
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

Change-Id: I5346fc36c89b7969c2bef3069f256f33bd4d9eb9
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>