996910 - Add some rr support to the build system

Status: NEW

(Firefox Build System :: General, defect)

Description

[(no longer active)]

I don't think we need to do much here, just the ability to pull the rr binary from tooltool and being able to pass the rr-record script which we'll write as part of this bug as the debugger to the test runner and getting the rr record file linked to from the TBPL log would be awesome!

Comment 1

[Mike Hommey [:glandium]]

That brings the question whether the CPUs used on the test slaves are westmere+, and whether AWS virtualization doesn't hide perf counters.

Comment 2

[Mike Hommey [:glandium]]

A cursory google search suggests those we are using aren't westmere+.

Comment 3

[(not currently active) Ted Mielczarek]

If you're talking about running tests under this then this isn't really the build system, is it? Unless your intent is to get the rr binary packaged into the test package? We should verify that our test harnesses are capable of being run under rr using --debugger and --debugger-args. Getting the record file out should just be a matter of writing it under $MOZ_UPLOAD_DIR.