https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55212
--- Comment #174 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #169)
> I'll try running gcc testsuite with the sh-elf cross compiler on old sh-sim.
> There may not be much chance, but it might catch the wrong code bug.
The results w/wo -mlra are exactly the same on the patched compiler. For
example,
make check-gcc RUNTESTFLAGS="execute.exp --target_board=sh-sim/-m4"
make check-gcc RUNTESTFLAGS="execute.exp --target_board=sh-sim/-m4/-mlra"
=== gcc Summary ===
# of expected passes 23910
# of unexpected failures 96
The result for the unpatched trunk compiler with -m4 is same, but with -m4
for the vanilla compiler 14.0.1 20240222 shows
# of unexpected failures 93
and 3 new failures on the current master compilers are
> FAIL: gcc.c-torture/execute/struct-ret-1.c -O2 execution test
> FAIL: gcc.c-torture/execute/struct-ret-1.c -O3 -g execution test
> FAIL: gcc.c-torture/execute/struct-ret-1.c -O2 -flto -fno-use-linker-plugin
> -flto-partition=none execution test
It doesn't look that this issue is the cause of the segfault. This is a bad
sign, though.
Can the unpatched trunk gcc15 bootstrap with reverting enable -mlra by default
patch in c#121 in the first place? I assume that gcc14 can bootstrap
successfully with -mno-lra.
I'll look the above execution errors into more closely.
BTW, the patched (58832, 58833,58883,58905) gcc 14.0.1 20240222 has no above 3
FAILs for gcc.c-torture/execute/struct-ret-1.c and moreover -mlra fixes one
more case
PASS: gcc.c-torture/execute/struct-ret-1.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects execution test
which was failed even with unpatched 14.0.1.
