Juzhe,
I disagree with this comment. There are many stakeholders for
autovectorization and waiting until GCC 14 is not a viable solution for
us as well as other stakeholders ready to begin work on autovectorization.
As we discussed I have been moving forward with patches for
autovectorization and am preparing to send them to gcc-patches. This
assert is preventing code from compiling and needs to be addressed.
If you have a solution in either the RISCV backend or in this file can
you please present it?
On 2/22/23 10:27, juzhe.zh...@rivai.ai wrote:
>/gcc/ />//>/* tree-vect-loop-manip.cc (vect_do_peeling): Verify />/that vectorization factor is a compile-time constant. />//>/---
/>/gcc/tree-vect-loop-manip.cc | 2 +- />/1 file changed, 1 insertion(+), 1 deletion(-) />//>/diff --git a/gcc/tree-vect-loop-manip.cc
b/gcc/tree-vect-loop-manip.cc />/index 6aa3d2ed0bf..1ad1961c788 100644 />/--- a/gcc/tree-vect-loop-manip.cc />/+++ b/gcc/tree-vect-loop-manip.cc
/>/@@ -2930,7 +2930,7 @@ vect_do_peeling (loop_vec_info loop_vinfo, tree />/niters, tree nitersm1, />/niters = vect_build_loop_niters (loop_vinfo,
&new_var_p); />//* It's guaranteed that vector loop bound before vectorization is at />/least VF, so set range information for newly generated var. */
/>/- if (new_var_p) />/+ if (new_var_p && vf.is_constant ()) />/{ />/value_range vr (type, />/wi::to_wide (build_int_cst (type, vf)),/
I don't think we need to apply this limit in case of RVV
auto-vectorization.
I have talked with Kito and I have a full solution of supporting RVV
solution.
We are going to support RVV auto-vectorization in 3 configuration
according to RVV ISA spec:
1. -march=zve32* support QI and HI auto-vectorization by VNx4QImode
and VNx2HImode
2. -march=zve64* support QI and HI and SI auto-vectorization by
VNx8QImode and VNx4HImode and VNx2SImode
3.-march=v* support QI and HI and SI and DI auto-vectorization by
VNx16QImode and VNx8HImode and VNx4SImode and VNx2DImode
I will support them in GCC 14. Current loop vectorizer works well for
us no need to fix it.
Thanks.
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juzhe.zh...@rivai.ai
