On 6/23/25 3:02 AM, KuanLin Chen wrote:
Hi,
This extension defines vector instructions to extract a pair of FP16
data from
a floating-point register. Multiply the top FP16 data with the FP16 elements
and add the result with the bottom FP16 data.
gcc/ChangeLog:
* common/config/riscv/riscv-common.cc:
Turn on VECTOR_ELEN_FP_16 for XAndesvpackfph.
* config/riscv/andes-vector-builtins-bases.cc (nds_vfpmad): New
class.
* config/riscv/andes-vector-builtins-bases.h: New def.
* config/riscv/andes-vector-builtins-functions.def
(nds_vfpmadt): Ditto.
(nds_vfpmadb): Ditto.
(nds_vfpmadt_frm): Ditto.
(nds_vfpmadb_frm): Ditto.
* config/riscv/andes-vector.md (@pred_nds_vfpmad<nds_tb><mode>):
New pattern.
* config/riscv/riscv-vector-builtins-types.def
(DEF_RVV_F16_OPS): New def.
* config/riscv/riscv-vector-builtins.cc (f16_ops): Ditto
* config/riscv/riscv-vector-builtins.def (float32_type_node):
Ditto.
* config/riscv/riscv-vector-builtins.h (XANDESVPACKFPH_EXT): Ditto.
(required_ext_to_isa_name): Add case XANDESVPACKFPH_EXT.
(required_extensions_specified): Ditto.
* config/riscv/riscv.md (nds_vfpmad): New def.
* config/riscv/vector-iterators.md (VHF): New iterator.
You've added a new type (nds_vfpmad). You'll need to udpate all the
existing DFAs to handle insns with that type. Otherwise someone that
asks for code generation for your design, but a different tuning model
will get aborts.
It's generally considered OK to add them to a dummy or unknown insn
reservation. See the p8700 description for an example (mips_p8700_unknown).
Jeff
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/xandesvector/non-policy/non-overloaded/
nds_vfpmadb.c: New test.
* gcc.target/riscv/rvv/xandesvector/non-policy/non-overloaded/
nds_vfpmadt.c: New test.
* gcc.target/riscv/rvv/xandesvector/non-policy/overloaded/
nds_vfpmadb.c: New test.
* gcc.target/riscv/rvv/xandesvector/non-policy/overloaded/
nds_vfpmadt.c: New test.
* gcc.target/riscv/rvv/xandesvector/policy/non-overloaded/
nds_vfpmadb.c: New test.
* gcc.target/riscv/rvv/xandesvector/policy/non-overloaded/
nds_vfpmadt.c: New test.
* gcc.target/riscv/rvv/xandesvector/policy/overloaded/
nds_vfpmadb.c: New test.
* gcc.target/riscv/rvv/xandesvector/policy/overloaded/
nds_vfpmadt.c: New test.
