Re: [PATCH] LOOP IVOPTS: Apply LEN_MASK_{LOAD,STORE}

[Jeff Law <jeffreyalaw@gmail.com>]

On 6/23/23 08:05, juzhe.zhong@rivai.ai wrote:
> From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
> 
> gcc/ChangeLog:
> 
>          * tree-ssa-loop-ivopts.cc (get_mem_type_for_internal_fn): Apply LEN_MASK_{LOAD,STORE}.
> 
> ---
>   gcc/tree-ssa-loop-ivopts.cc | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/gcc/tree-ssa-loop-ivopts.cc b/gcc/tree-ssa-loop-ivopts.cc
> index 6671ff6db5a..2b66fe66bc7 100644
> --- a/gcc/tree-ssa-loop-ivopts.cc
> +++ b/gcc/tree-ssa-loop-ivopts.cc
> @@ -2442,6 +2442,7 @@ get_mem_type_for_internal_fn (gcall *call, tree *op_p)
>       case IFN_MASK_LOAD:
>       case IFN_MASK_LOAD_LANES:
>       case IFN_LEN_LOAD:
> +    case IFN_LEN_MASK_LOAD:
>         if (op_p == gimple_call_arg_ptr (call, 0))
>   	return TREE_TYPE (gimple_call_lhs (call));
>         return NULL_TREE;
> @@ -2449,8 +2450,11 @@ get_mem_type_for_internal_fn (gcall *call, tree *op_p)
>       case IFN_MASK_STORE:
>       case IFN_MASK_STORE_LANES:
>       case IFN_LEN_STORE:
> +    case IFN_LEN_MASK_STORE:
>         if (op_p == gimple_call_arg_ptr (call, 0))
> -	return TREE_TYPE (gimple_call_arg (call, 3));
> +	return TREE_TYPE (
> +	  gimple_call_arg (call, internal_fn_stored_value_index (
> +				   gimple_call_internal_fn (call))));
Formatting nit.  Compute the result of internal_fn_stored_value_index 
into a temporary and pass that temporary into gimple_call_arg which 
should clean up the formatting here.

In general, if you find yourself indenting after an open paren like 
you've done here, compute the value into a temporary.

OK with the formatting fix.

jeff