https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #15 from Richard Biener ---
So the issue is really that for
for (int i = 0; i < n; ++i)
{
double tem1 = a4[i*4] + a4[i*4+n*4] (**);
double tem2 = a4[i*4+2*n*4+1];
a4[i*4+n*4+1] = tem1;
a4[i*4+1] = tem2;
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
Richard Biener changed:
What|Removed |Added
Status|NEW |ASSIGNED
--- Comment #14 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #13 from Martin Liška ---
Can be reproduced also on e.g. a Haswell machine:
-Ofast -march=haswell -g -funroll-loops
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #12 from Martin Liška ---
Theoretically similar to PR87214, but the patch was backported and this issues
is present in 8.3.1.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #11 from Martin Liška ---
Created attachment 46124
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46124=edit
Vectorizer and optimized dumps
So I can confirm the problematic file is mapz_module.fppized.f90. The
problematic
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #10 from Richard Biener ---
Looking at the rev. and the context I figured the original caller was
added for a case that can no longer happen (SAME_DR_STMT set, that
can never happen since we rewrote interleaving chain detection for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #9 from Martin Liška ---
However, '--size=test' helps here, fails quickly. With the revision, there 2
files are difference: mapz_module.fppized.o.s and optics_lib.o.s.
I suspect the later one.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
Martin Liška changed:
What|Removed |Added
Status|WAITING |NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #8 from Martin Liška ---
>
> Please use GCC 8 branch, not trunk. The problem only shows up on GCC 8
> branch.
I can confirm that with r265453 I see:
*** Miscompare of cam4_validate.txt; for details see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
Martin Liška changed:
What|Removed |Added
CC||marxin at gcc dot gnu.org
--- Comment #3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
--- Comment #2 from H.J. Lu ---
On trunk, r265457 fixed 527.cam4_r in SPEC CPU 2017 with:
-march=native -Ofast -funroll-loops
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018
H.J. Lu changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
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