Add gcc-jit coverage to the valgrind test suite

[grisu48]

On request adding coverage to the gcc-jit compiler within the valgrind test suite.
This test will run on openSUSE Tumbleweed only, as the feature is quiet new and not applicable yet to SLES.

• Related ticket: https://progress.opensuse.org/issues/94928
• Verification run: Tumbleweed | Tumbleweed Schedule

[marxin]

Thank you for working on that. Few comments I have:

• I would not call it a valgrind JIT test as we want to test only JIT functionality; actually running the test-case in valgrind results in quite some valgrind warnings:

==26730== 
==26730== Conditional jump or move depends on uninitialised value(s)
==26730==    at 0x559D2E0: UnknownInlinedFun (sparseset.h:146)
==26730==    by 0x559D2E0: mark_pseudo_regno_live(int) (ira-lives.c:326)
==26730==    by 0x5592CBE: process_bb_node_lives(ira_loop_tree_node*) [clone .lto_priv.0] (ira-lives.c:1434)
==26730==    by 0x557FE3E: ira_traverse_loop_tree(bool, ira_loop_tree_node*, void (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (ira-build.c:1801)
==26730==    by 0x557BB9B: UnknownInlinedFun (ira-lives.c:1734)
==26730==    by 0x557BB9B: ira_build() (ira-build.c:3428)
==26730==    by 0x555D997: (anonymous namespace)::pass_ira::execute(function*) [clone .lto_priv.0] (ira.c:5655)
==26730==    by 0x5305227: execute_one_pass(opt_pass*) (passes.c:2567)
==26730==    by 0x5341264: UnknownInlinedFun (passes.c:2656)
==26730==    by 0x5341264: UnknownInlinedFun (passes.c:2657)
==26730==    by 0x5341264: execute_pass_list(function*, opt_pass*) (passes.c:2667)
==26730==    by 0x57673EA: cgraph_node::expand() (cgraphunit.c:1830)
==26730==    by 0x5304701: UnknownInlinedFun (cgraphunit.c:2069)
==26730==    by 0x5304701: UnknownInlinedFun (cgraphunit.c:2137)
==26730==    by 0x5304701: symbol_table::compile() (cgraphunit.c:2355)
==26730==    by 0x575154E: UnknownInlinedFun (cgraphunit.c:2539)
==26730==    by 0x575154E: compile_file() [clone .lto_priv.0] (toplev.c:482)
==26730==    by 0x58DEB21: gcc::jit::playback::context::compile() (toplev.c:2201)
==26730==    by 0x58BFCB9: UnknownInlinedFun (jit-recording.c:1397)
==26730==    by 0x58BFCB9: gcc_jit_context_compile (libgccjit.c:2827)

Btw. these are known false positives.

• Please preserve the original copyright of the test-case:

/* Usage example for libgccjit.so
   Copyright (C) 2014-2021 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

[grisu48]

Indeed, it makes perhaps more sense to move this to an additional test gcc.pm. I've moved it there and updated the schedule for Tumbleweed accordingly.

[ge0r]

LGTM! I would also add a cleanup function (in the perl side) but all looks good otherwise, nice library!

[grisu48]

LGTM! I would also add a cleanup function (in the perl side) but all looks good otherwise, nice library!

What kind of cleanup are you thinking of? I don't see much potential for cleanup or do you mean to just put the skeleton code there?

[ge0r]

LGTM! I would also add a cleanup function (in the perl side) but all looks good otherwise, nice library!

What kind of cleanup are you thinking of? I don't see much potential for cleanup or do you mean to just put the skeleton code there?

Nothing special, just deleting the source file and binary. But again, no strong opinion on it