[PATCH 6/6] gprof: only process line numbers for intersection of vmas and histograms

[Sam James]

Richard Allen <rsaxvc@gmail.com> writes:

Hi!

> Some programs like RTOS firmware may have a large number of symbols.
>
> By loading the histograms before loading symbols, we can look up
> only the line numbers that were captured in the histogram file,
> which reduces processing time for such a firmware from ~2 minutes
> to ~2 seconds.
>
> Signed-off-by: Richard Allen <rsaxvc@gmail.com>


This seems to regress glibc's gmon tests
(https://sourceware.org/PR32764):

tst-gmon-gprof.test-result:FAIL: gmon/tst-gmon-gprof
tst-gmon-pie-gprof.test-result:FAIL: gmon/tst-gmon-pie-gprof
tst-gmon-static-gprof.test-result:FAIL: gmon/tst-gmon-static-gprof
tst-gmon-static-pie-gprof.test-result:FAIL: gmon/tst-gmon-static-pie-gprof

Could you take a look? Thanks.