JM: Simple function-level hit and cycle counter

RESOLVED WONTFIX

Status

()

Core
JavaScript Engine
RESOLVED WONTFIX
6 years ago
4 years ago

People

(Reporter: dvander, Unassigned)

Tracking

Firefox Tracking Flags

(Not tracked)

Details

Attachments

(1 attachment)

(Reporter)

Description

6 years ago
Created attachment 516441 [details] [diff] [review]
v0

This patch starts an rdtsc timer at function prologues, then takes the difference at the epilogue and adds it to script->ncycles. When a script is destroyed, its statistics are dumped like this:

jit prof (script "crypto.js") (line "243") (cycles 12250744) (hits 158295) (per 77)

There's no callgraph information or anything yet. This is quick and dirty and I'm not sure if it's enough to be helpful yet.
JM was removed, and there's pccounts + code to integrate with various profilers now.
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → WONTFIX
You need to log in before you can comment on or make changes to this bug.