JVM_IR has consistent stepping behavior for secondary constructors
and init blocks. This change fixes the expectations for tests that
expect the less consistent JVM backend behavior.
Temporary variable loads in when expressions had the offsets
of the variable declaration. That leads to hacks during codegen
for line number generation.
Instead of those hacks, give the variable loads the offsets of
the context in which they occur. That avoids the codegen hacks
and fixes stepping behavior for more when expressions.
In addition, made the stepping information for constructor calls
consistent across JVM_IR and JVM. For JVM_IR that stepping behavior
is consistent for enum constructor calls in <clinit> for JVM it
is not.
In particular, the current line numbers could lead to stepping
into the catch handler even when the code in the try did not
throw an exception.
This was caused by the code materializing the final value having
the catch line number. This patch delays the materialization
until the line number of the usage has been emitted.
These line number tests only tested that a set of line numbers where
present in the java bytecode. Not that they would be hit in the
right order by the debugger. Moving them to stepping tests fixes that.
This exposes a couple of issues (in particular around try-catch-finally)
that should be fixed.
A number of tests are marked as failing now. Will investigate and
work on fixes next.
Specifically, this commit improves the stepping behavior of the IR
backend around functions with defaults.
- Improved line numbers in the default handler itself for better
stepping when inlined.
- Improved source information on default arguments
- Improved test coverage of stepping behavior in old and IR backends.
Improves the stepping behaviour around inline methods with default
arguments. In particular, we now accurately step through the
evaluation of default arguments, but do _not_ spuriously show the exit
from the $default handler.
Fix line number generation for assignments where the right-hand
side of the assignment is not on the same line.
Fix line number generation for intrinsics functions where the
function is not on the same line as the last argument.
Be careful to not break stepping behavior with the iinc
optimizations.
Mads Ager