https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71733
Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-07-02
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot
gnu.org
Target Milestone|--- |7.0
Ever confirmed|0 |1
--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
Confirmed. Here's a minimal test case. With -mno-vsx, we should be disabling
direct move, which we don't seem to be doing.
bergner@genoa:~/gcc/BUGS/sawdey/altivec$ cat bug.i
typedef __attribute__((altivec(vector__))) unsigned char vec_t;
vec_t
foo (vec_t src)
{
return src;
}
bergner@genoa:~/gcc/BUGS/sawdey/altivec$
/home/bergner/gcc/build/gcc-fsf-mainline-debug/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-debug/gcc/ -O0 -mcpu=power9 -mno-vsx
-S bug.i
bug.i: In function ‘foo’:
bug.i:6:1: error: insn does not satisfy its constraints:
}
^
(insn 18 24 30 (set (mem/c:V16QI (plus:DI (reg/f:DI 31 31)
(const_int 48 [0x30])) [0 S16 A128])
(reg:V16QI 79 2 [ src ])) bug.i:4 1205 {*altivec_movv16qi}
(nil))
bug.i:6:1: internal compiler error: in extract_constrain_insn_cached, at
recog.c:2223
0x10c46563 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/rtl-error.c:108
0x10c465ff _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/rtl-error.c:119
0x10bc9e1f extract_constrain_insn_cached(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/recog.c:2223
0x114b259f insn_default_length(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/config/rs6000/rs6000.md:6424
0x1073866f shorten_branches(rtx_insn*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:1184
0x10741eff rest_of_handle_shorten_branches
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:4537
0x10741fbf execute
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:4566
