https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99842
Bug ID: 99842
Summary: MMA test case ICEs using -O3
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: bergner at gcc dot gnu.org
Target Milestone: ---
A reduced test case from Eigen using MMA builtins ICEs using -O3:
bergner@pike:~/gcc/BUGS/$ g++ -w -S -O3 -mcpu=power10 bug.ii
bug.ii: In function ‘n< <template-parameter-1-1>, <anonymous>, m, <anonymous>,
<anonymous>, <anonymous> >::n(ab) [with ab = af<ag<int, const n<double, -1, -1,
3>, const n<double, -1, -1, 3> >, n<double, -1, 1, 3> >; cg = double; int
<anonymous> = -1; int m = 1; int <anonymous> = 3; int <anonymous> = 0; int
<anonymous> = 1]’:
bug.ii:90:59: error: could not split insn
90 | template <typename ab> n(ab p) { n::template ch<ab>(p); }
| ^
(insn:TI 28 335 29 (set (reg:OO 32 0 [orig:125 _28 ] [125])
(unspec:OO [
(mem:V16QI (plus:DI (reg/f:DI 26 26 [orig:223 MEM <double *>
[(struct ca *)_253] ] [223])
(reg:DI 27 27 [222])) [0 MEM <au> [(void *)_25]+0 S16
A8])
(mem:V16QI (plus:DI (reg/f:DI 26 26 [orig:223 MEM <double *>
[(struct ca *)_253] ] [223])
(reg:DI 27 27 [222])) [0 MEM <au> [(void *)_25]+0 S16
A8])
] UNSPEC_MMA_ASSEMBLE)) 2080 {*vsx_assemble_pair}
(expr_list:REG_EQUIV (mem/c:OO (plus:DI (reg/f:DI 31 31 [217])
(const_int 160 [0xa0])) [6 MEM[(__vector_pair *)_173]+0 S32
A256])
(nil)))
during RTL pass: final
bug.ii:90:59: internal compiler error: in final_scan_insn_1, at final.c:3092
0x101fa5fb _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/rtl-error.c:108
0x10a2b5cb final_scan_insn_1
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:3092
0x10a2c613 final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:3171
0x10a2c9b3 final_1
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:2022
0x10a2dc57 rest_of_handle_final
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:4676
0x10a2dc57 execute
/home/bergner/gcc/gcc-fsf-mainline-base/gcc/final.c:4754
