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[Bug middle-end/52621] [4.6/4.7/4.8 Regression] ICE with -O3 -march=opteron in initialize_matrix_A, at tree-data-ref.c:1964
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 21 Mar 2012 13:50:34 +0000
- Subject: [Bug middle-end/52621] [4.6/4.7/4.8 Regression] ICE with -O3 -march=opteron in initialize_matrix_A, at tree-data-ref.c:1964
- Auto-submitted: auto-generated
- References: <bug-52621-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52621
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.4.6, 4.5.3
Summary|ICE with -O3 -march=opteron |[4.6/4.7/4.8 Regression]
|in initialize_matrix_A, at |ICE with -O3 -march=opteron
|tree-data-ref.c:1964 |in initialize_matrix_A, at
| |tree-data-ref.c:1964
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-03-21 13:50:34 UTC ---
> I can reproduce it on x86-64-gnu-linux with:
> gfortran -march=opteron -O3 -w -c file.f
>
> The crucial flag is the "opteron" - it works with "core2".
Confirmed. AFAICT the code compiles with 4.4.6 and 4.5.3 (so marked as a
regression) and on trunk when compiled with '-march=opteron -O2
-ftree-vectorize'.