Some thing make pass 3 of the compiler very slow for class depending of vision 2

[jacques silberstein]

I just change the color value in a class which is a descendent of EV_WIDGET.
Only one correction on one class !

mardi 23 février 2021, 19:15:39 (UTC+0100)
Eiffel Compilation Manager
Version 20.11.10.5048 - linux-x86-64

Degree 6: Examining System
Degree 5: Parsing Classes
Degree 4: Analyzing Inheritance
Degree 3: Checking Types
Degree 2: Generating Byte Code
Degree 1: Generating Metadata
Melting System Changes
System Recompiled.
mardi 23 février 2021, 19:18:28 (UTC+0100)

The pass 3 take about 3 minutes !!!!
=====================================

Then, I change a comment in a class which has no relation wich vision 2.

mardi 23 février 2021, 19:23:53 (UTC+0100)
Eiffel Compilation Manager
Version 20.11.10.5048 - linux-x86-64

Degree 6: Examining System
Degree 5: Parsing Classes
Degree 4: Analyzing Inheritance
Degree 3: Checking Types
Degree 2: Generating Byte Code
Degree 1: Generating Metadata
Melting System Changes
-------------------------------------------------------------------------------

Error code: Obsolete Call

Warning: call uses obsolete feature.
What to do: update to new feature at your earliest convenience. The
feature is still available but may be removed in the future.

Class: STARTER
Class: STARTER
Feature: complete_data_context
Obsolete feature: as_string_8: STRING_8 (class STRING_32)
Obsolete message:
For 32-bit strings:
- use explicit conversion `to_string_8` with a test that the string is made of ASCII characters only.
For 8-bit strings:
- consider changing the type of reattachmanet target to READABLE_STRING_8 or
- use explicit conversion `to_string_8` to avoid implicit performance penalty.
[2019-11-30]
Line: 213
if attached os.item ("PATH") as p then
-> log ("PATH=" + p)
end

-------------------------------------------------------------------------------
System Recompiled.
mardi 23 février 2021, 19:23:54 (UTC+0100)


Elpsed time : 19:23:54 - 19:23:53 = 1 sec.
==============================================

This problem can be reproduiced wich any vision dependant class.
What's the mater ?

Jacques

[r...@amalasoft.com]

Sounds like global dataflow analysis cost when changing a class inherited by and/or used by a large number of other classes.  Each dependency needs to be verified.

R

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[Ulrich Windl]

Hi!

I have no answer for this, but questions:
Does the Eiffel runtime have provisions to measure where time was spent (a
tool like gprof)?
If so, is there a way to let the compiler explain where it spent its time?
My only idea for the problem is (as Eiffel may be resource-hungry): Do you
have "enough" RAM? ;-)

Regards,
Ulrich

>>> jacques silberstein <jac...@abstraction.ch> schrieb am 23.02.2021 um
19:41 in
Nachricht <20210223194124.31e12c5b@neuchatel>: