[PATCH] RISC-V: add option -m(no-)autovec-segment

[Vineet Gupta]

On 2/27/24 07:25, Jeff Law wrote:
> On 2/25/24 21:53, Greg McGary wrote:
>> Add option -m(no-)autovec-segment to enable/disable autovectorizer
>> from emitting vector segment load/store instructions. This is useful for
>> performance experiments.
>>
>> gcc/ChangeLog:
>> 	* config/riscv/autovec.md (vec_mask_len_load_lanes, vec_mask_len_store_lanes):
>> 	  Predicate with TARGET_VECTOR_AUTOVEC_SEGMENT
>> 	* gcc/config/riscv/riscv-opts.h (TARGET_VECTOR_AUTOVEC_SEGMENT): New macro.
>> 	* gcc/config/riscv/riscv.opt (-m(no-)autovec-segment): New option.
>> 	* gcc/tree-vect-stmts.cc (gcc/tree-vect-stmts.cc): Prevent divide-by-zero.
>> 	* testsuite/gcc.target/riscv/rvv/autovec/struct/*_noseg*.c,
>> 	testsuite/gcc.target/riscv/rvv/autovec/no-segment.c: New tests.
> I don't mind having options to do this kind of selection (we've done 
> similar things internally for other RVV features).  But I don't think 
> now is the time to be introducing this stuff.  We're in stage4 of the 
> development cycle after all.

Ping ! now that we are back in stage1

Thx,
-Vineet