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middle-end: Store and use the SLP instance kind when aborting load/store lanes

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This patch stores the SLP instance kind in the SLP instance so that we can use
it later when detecting load/store lanes support.

This also changes the load/store lane support check to only check if the SLP
kind is a store.  This means that in order for the load/lanes to work all
instances must be of kind store.

gcc/ChangeLog:

	* tree-vect-loop.c (vect_analyze_loop_2): Check kind.
	* tree-vect-slp.c (vect_build_slp_instance): New.
	(enum slp_instance_kind): Move to...
	* tree-vectorizer.h (enum slp_instance_kind): .. Here
	(SLP_INSTANCE_KIND): New.
This commit is contained in:
Tamar Christina 2020-11-05 09:02:29 +00:00
parent 025f434a87
commit e3587a2d8b
3 changed files with 15 additions and 7 deletions
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1
gcc/tree-vect-loop.c
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@ -2394,6 +2394,7 @@ start_over:
/* If the loads and stores can be handled with load/store-lane
instructions record it and move on to the next instance. */
if (loads_permuted
&& SLP_INSTANCE_KIND (instance) == slp_inst_kind_store
&& vect_store_lanes_supported (vectype, group_size, false))
{
FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (instance), i, load_node)

8
gcc/tree-vect-slp.c
View File

@ -2171,13 +2171,6 @@ calculate_unrolling_factor (poly_uint64 nunits, unsigned int group_size)
return exact_div (common_multiple (nunits, group_size), group_size);
}
enum slp_instance_kind {
slp_inst_kind_store,
slp_inst_kind_reduc_group,
slp_inst_kind_reduc_chain,
slp_inst_kind_ctor
};
static bool
vect_analyze_slp_instance (vec_info *vinfo,
scalar_stmts_to_slp_tree_map_t *bst_map,
@ -2253,6 +2246,7 @@ vect_build_slp_instance (vec_info *vinfo,
SLP_INSTANCE_UNROLLING_FACTOR (new_instance) = unrolling_factor;
SLP_INSTANCE_LOADS (new_instance) = vNULL;
SLP_INSTANCE_ROOT_STMT (new_instance) = root_stmt_info;
SLP_INSTANCE_KIND (new_instance) = kind;
new_instance->reduc_phis = NULL;
new_instance->cost_vec = vNULL;
new_instance->subgraph_entries = vNULL;

13
gcc/tree-vectorizer.h
View File

@ -174,6 +174,15 @@ struct _slp_tree {
static void operator delete (void *, size_t);
};
/* The enum describes the type of operations that an SLP instance
can perform. */
enum slp_instance_kind {
slp_inst_kind_store,
slp_inst_kind_reduc_group,
slp_inst_kind_reduc_chain,
slp_inst_kind_ctor
};
/* SLP instance is a sequence of stmts in a loop that can be packed into
SIMD stmts. */
@ -202,6 +211,9 @@ public:
entries into the same subgraph, including itself. */
vec<_slp_instance *> subgraph_entries;
/* The type of operation the SLP instance is performing. */
slp_instance_kind kind;
dump_user_location_t location () const;
} *slp_instance;
@ -211,6 +223,7 @@ public:
#define SLP_INSTANCE_UNROLLING_FACTOR(S) (S)->unrolling_factor
#define SLP_INSTANCE_LOADS(S) (S)->loads
#define SLP_INSTANCE_ROOT_STMT(S) (S)->root_stmt
#define SLP_INSTANCE_KIND(S) (S)->kind
#define SLP_TREE_CHILDREN(S) (S)->children
#define SLP_TREE_SCALAR_STMTS(S) (S)->stmts