------- Comment #3 from fxcoudert at gcc dot gnu dot org 2007-09-17 08:39
-------
I can reproduce that on x86_64-linux with trunk rev. 128442. Severity set to
critical, as this is LAPACK.
Program received signal SIGSEGV, Segmentation fault.
vect_get_vec_defs_for_stmt_copy (dt=0x7fff713d44c0,
vec_oprnds0=0x7fff713d44b8, vec_oprnds1=0x7fff713d44b0)
at ../../../trunk/gcc/tree.h:210
210 DEF_VEC_P(tree);
(gdb) bt
#0 vect_get_vec_defs_for_stmt_copy (dt=0x7fff713d44c0,
vec_oprnds0=0x7fff713d44b8, vec_oprnds1=0x7fff713d44b0)
at ../../../trunk/gcc/tree.h:210
#1 0x0000000000aacca6 in vectorizable_operation (stmt=0x2ac339ca5600,
bsi=0x7fff713d4660, vec_stmt=0x7fff713d4528, slp_node=0x0)
at ../../../trunk/gcc/tree-vect-transform.c:3987
#2 0x0000000000ab95d4 in vect_transform_stmt (stmt=0x2ac339ca5600,
bsi=0x7fff713d4660, strided_store=0x7fff713d46cf "", slp_node=0x0)
at ../../../trunk/gcc/tree-vect-transform.c:6095
#3 0x0000000000aba733 in vect_transform_loop (loop_vinfo=0x1091460)
at ../../../trunk/gcc/tree-vect-transform.c:7334
#4 0x000000000080c28e in vectorize_loops ()
at ../../../trunk/gcc/tree-vectorizer.c:2507
#5 0x000000000064e261 in execute_one_pass (pass=0xe22180)
at ../../../trunk/gcc/passes.c:1115
#6 0x000000000064e440 in execute_pass_list (pass=0xe22180)
at ../../../trunk/gcc/passes.c:1168
#7 0x000000000064e455 in execute_pass_list (pass=0xe21fa0)
at ../../../trunk/gcc/passes.c:1169
#8 0x000000000064e455 in execute_pass_list (pass=0xe213a0)
at ../../../trunk/gcc/passes.c:1169
#9 0x00000000007286e8 in tree_rest_of_compilation (fndecl=0x2ac339c14340)
at ../../../trunk/gcc/tree-optimize.c:404
Reduced testcase is:
$ cat foo.f
SUBROUTINE DLARRE (W, IBLOCK, WORK)
INTEGER M, I
INTEGER IBLOCK(*)
DOUBLE PRECISION W(*), WORK(*)
DO JBLK = 1, 10
DO I = 1, 10
M = M + 1
W(M) = -WORK(I)
IBLOCK(M) = 0
END DO
END DO
END
$ gfortran -O2 -ftree-vectorize foo.f
foo.f: In function dlarre:
foo.f:1: internal compiler error: Segmentation fault
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fxcoudert at gcc dot gnu dot
| |org
Severity|normal |critical
Status|UNCONFIRMED |NEW
Component|fortran |middle-end
Ever Confirmed|0 |1
GCC build triplet| |x86_64-linux
GCC host triplet|suse-linux-x86_64 |x86_64-linux
GCC target triplet| |x86_64-linux
Keywords| |ice-on-valid-code
Known to fail| |4.3.0
Known to work| |4.2.2
Last reconfirmed|0000-00-00 00:00:00 |2007-09-17 08:39:44
date| |
Summary|ice for fortran code with - |[4.3 regression] ICE for
|O2 -ftree-vectorize |fortran code with -O2 -
| |ftree-vectorize
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33449
