[nvptx] Handle DCmode in define_expand "omp_simt_xchg_{bfly,idx}"
For a test-case doing an openmp target simd reduction on a complex double:
...
DOUBLE COMPLEX :: counter_N0
...
!$OMP TARGET SIMD reduction(+: counter_N0)
...
we run into:
...
during RTL pass: expand
b.f90: In function ‘MAIN__._omp_fn.0’:
b.f90:23:32: internal compiler error: in expand_insn, at optabs.cc:8029
23 | counter_N0 = counter_N0 + 1.
| ^
0x10f1cd3 expand_insn(insn_code, unsigned int, expand_operand*)
gcc/optabs.cc:8029
0xeac435 expand_GOMP_SIMT_XCHG_BFLY
gcc/internal-fn.cc:375
...
Fix this by handling DCmode and CDImode in define_expand
"omp_simt_xchg_{bfly,idx}".
Tested on x86_64 with nvptx accelerator.
gcc/ChangeLog:
2022-02-28 Tom de Vries <tdevries@suse.de>
PR target/102429
* config/nvptx/nvptx.cc (nvptx_gen_shuffle): Handle DCmode and CDImode.
* config/nvptx/nvptx.md
(define_predicate "nvptx_register_or_complex_di_df_register_operand"):
New predicate.
(define_expand "omp_simt_xchg_bfly", define_expand "omp_simt_xchg_idx"):
Use nvptx_register_or_complex_di_df_register_operand.