On Fri, Jun 14, 2024 at 9:35 AM Levy Hsu wrote:
>
> This patch updates the GCC x86 backend to efficiently handle
> odd, incrementally increasing permutations of BF16 vectors
> using the cvtne2ps2bf16 instruction.
> It modifies ix86_vectorize_vec_perm_const to support these operations
> and adds a
This patch updates the GCC x86 backend to efficiently handle
odd, incrementally increasing permutations of BF16 vectors
using the cvtne2ps2bf16 instruction.
It modifies ix86_vectorize_vec_perm_const to support these operations
and adds a specific predicate to ensure proper sequence handling.
Boots
gcc/ChangeLog:
* config/i386/i386-expand.cc
(ix86_vectorize_vec_perm_const): Convert BF to HI using subreg.
* config/i386/predicates.md
(vcvtne2ps2bf_parallel): New define_insn_and_split.
* config/i386/sse.md
(vpermt2_sepcial_bf16_shuffle_): New pred
