Previously, in the "Top-N most frequent C calls" section of --yjit-stats output, we printed the class name of the receiver, not the method owner. This meant that calls on subclass instances that land on the same method showed up as different entires.
Similarly, method called using an alias showed up as different entries from other aliases.
Group by the resolved method instead.
Test program:
1.itself; [].itself; true.inspect; true.to_s
Before:
Top-4 most frequent C calls (80.0% of C calls): 1 (20.0%): Integer#itself 1 (20.0%): TrueClass#to_s 1 (20.0%): TrueClass#inspect 1 (20.0%): Array#itself
After:
Top-2 most frequent C calls (80.0% of C calls): 2 (40.0%): Kernel#itself 2 (40.0%): TrueClass#to_s
Added by alanwu (Alan Wu) about 1 year ago
YJIT: In stats, group by resolved C method name
Previously, in the "Top-N most frequent C calls"
section of --yjit-stats output, we printed the class
name of the receiver, not the method owner. This meant
that calls on subclass instances that land on the same
method showed up as different entires.
Similarly, method called using an alias showed up as
different entries from other aliases.
Group by the resolved method instead.
Test program:
Before:
After: