[PATCH 0/5] gdb.perf/: Add JIT performance test

[Ilya Leoshkevich]

Hi,

This series implements a JIT performance test as discussed in [1].
Patch 1 is a small fix, patches 2-4 are preparations and patch 5 is
the test itself.

The test can be used as follows:

$ make build-perf -j"$(nproc)" RUNTESTFLAGS=jit.exp
$ make check-perf RUNTESTFLAGS=jit-check.exp GDB_PERFTEST_MODE=run

The results can be converted to gnuplot-friendly format as follows:

$ perl -ne 'if (/:register_times:(\d+) (.+)/) { print "$1 $2\n"; }' \
      <gdb.perf/outputs/jit/pieces/perftest.sum >jit.txt

I've uploaded the results to [2].  They are somewhat different from
those from Andrew, but they still show that [1] is an improvement.
The third result shown on the chart is from [3] - with it I can
pass the 10k JITed objects mark and finally debug CoreCLR JIT with
GDB.  It's still WIP though - the testsuite shows a couple of
failures.

Best regards,
Ilya

[1] https://sourceware.org/pipermail/gdb-patches/2022-May/189341.html
[2] https://github.com/iii-i/binutils-gdb/blob/section-map-20220525-2/gdb/testsuite/jit.png
[3] https://github.com/iii-i/binutils-gdb/commits/section-map-20220525-2

Ilya Leoshkevich (5):
  gdb.perf/: Fix tcl_string_list_to_python_list {x}
  gdb.perf/: Add binary_link_with_shlibs setting to GenPerfTest
  gdb.perf/: Compile the binary with -DSHLIB
  gdb.base/: Introduce jit-protocol-util.h
  gdb.perf/: Add JIT performance test

 gdb/testsuite/gdb.base/jit-elf-fork-main.c | 37 +---------
 gdb/testsuite/gdb.base/jit-elf-main.c      | 37 +---------
 gdb/testsuite/gdb.base/jit-protocol-util.h | 74 +++++++++++++++++++
 gdb/testsuite/gdb.base/jit-reader-host.c   |  8 +-
 gdb/testsuite/gdb.perf/jit-check.exp       | 25 +++++++
 gdb/testsuite/gdb.perf/jit-check.py        | 60 +++++++++++++++
 gdb/testsuite/gdb.perf/jit-solib.c         | 28 +++++++
 gdb/testsuite/gdb.perf/jit.c               | 85 ++++++++++++++++++++++
 gdb/testsuite/gdb.perf/jit.exp             | 37 ++++++++++
 gdb/testsuite/lib/gen-perf-test.exp        | 25 ++++---
 gdb/testsuite/lib/perftest.exp             |  2 +-
 11 files changed, 336 insertions(+), 82 deletions(-)
 create mode 100644 gdb/testsuite/gdb.base/jit-protocol-util.h
 create mode 100644 gdb/testsuite/gdb.perf/jit-check.exp
 create mode 100644 gdb/testsuite/gdb.perf/jit-check.py
 create mode 100644 gdb/testsuite/gdb.perf/jit-solib.c
 create mode 100644 gdb/testsuite/gdb.perf/jit.c
 create mode 100644 gdb/testsuite/gdb.perf/jit.exp

-- 
2.35.3