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[04/46] Factor out the test for a valid reduction input 

vect_is_slp_reduction and vect_is_simple_reduction had two instances
each of:

              && (is_gimple_assign (def_stmt)
                  || is_gimple_call (def_stmt)
                  || STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
                           == vect_induction_def
                  || (gimple_code (def_stmt) == GIMPLE_PHI
                      && STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
                                  == vect_internal_def
                      && !is_loop_header_bb_p (gimple_bb (def_stmt)))))

This patch splits it out in a subroutine.

2018-07-31  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vect-loop.c (vect_valid_reduction_input_p): New function,
	split out from...
	(vect_is_slp_reduction): ...here...
	(vect_is_simple_reduction): ...and here.  Remove repetition of tests
	that are already known to be false.

From-SVN: r263119
This commit is contained in:
Richard Sandiford 2018-07-31 14:21:28 +00:00 committed by Richard Sandiford
parent 6e2dd807c2
commit 83a400d0a5
2 changed files with 29 additions and 36 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2018-07-31 Richard Sandiford <richard.sandiford@arm.com>
* tree-vect-loop.c (vect_valid_reduction_input_p): New function,
split out from...
(vect_is_slp_reduction): ...here...
(vect_is_simple_reduction): ...and here. Remove repetition of tests
that are already known to be false.
2018-07-31 Richard Sandiford <richard.sandiford@arm.com>
* tree-vectorizer.h (vect_free_slp_instance): Add a final_p parameter.

53
gcc/tree-vect-loop.c
View File

@ -2501,6 +2501,21 @@ report_vect_op (dump_flags_t msg_type, gimple *stmt, const char *msg)
dump_gimple_stmt (msg_type, TDF_SLIM, stmt, 0);
}
/* DEF_STMT occurs in a loop that contains a potential reduction operation.
Return true if the results of DEF_STMT are something that can be
accumulated by such a reduction. */
static bool
vect_valid_reduction_input_p (gimple *def_stmt)
{
stmt_vec_info def_stmt_info = vinfo_for_stmt (def_stmt);
return (is_gimple_assign (def_stmt)
|| is_gimple_call (def_stmt)
|| STMT_VINFO_DEF_TYPE (def_stmt_info) == vect_induction_def
|| (gimple_code (def_stmt) == GIMPLE_PHI
&& STMT_VINFO_DEF_TYPE (def_stmt_info) == vect_internal_def
&& !is_loop_header_bb_p (gimple_bb (def_stmt))));
}
/* Detect SLP reduction of the form:
@ -2626,14 +2641,7 @@ vect_is_slp_reduction (loop_vec_info loop_info, gimple *phi,
if (def_stmt
&& gimple_bb (def_stmt)
&& flow_bb_inside_loop_p (loop, gimple_bb (def_stmt))
&& (is_gimple_assign (def_stmt)
|| is_gimple_call (def_stmt)
|| STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
== vect_induction_def
|| (gimple_code (def_stmt) == GIMPLE_PHI
&& STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
== vect_internal_def
&& !is_loop_header_bb_p (gimple_bb (def_stmt)))))
&& vect_valid_reduction_input_p (def_stmt))
{
lhs = gimple_assign_lhs (next_stmt);
next_stmt = REDUC_GROUP_NEXT_ELEMENT (vinfo_for_stmt (next_stmt));
@ -2656,14 +2664,7 @@ vect_is_slp_reduction (loop_vec_info loop_info, gimple *phi,
if (def_stmt
&& gimple_bb (def_stmt)
&& flow_bb_inside_loop_p (loop, gimple_bb (def_stmt))
&& (is_gimple_assign (def_stmt)
|| is_gimple_call (def_stmt)
|| STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
== vect_induction_def
|| (gimple_code (def_stmt) == GIMPLE_PHI
&& STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt))
== vect_internal_def
&& !is_loop_header_bb_p (gimple_bb (def_stmt)))))
&& vect_valid_reduction_input_p (def_stmt))
{
if (dump_enabled_p ())
{
@ -3196,15 +3197,7 @@ vect_is_simple_reduction (loop_vec_info loop_info, gimple *phi,
&& (code == COND_EXPR
|| !def1 || gimple_nop_p (def1)
|| !flow_bb_inside_loop_p (loop, gimple_bb (def1))
|| (def1 && flow_bb_inside_loop_p (loop, gimple_bb (def1))
&& (is_gimple_assign (def1)
|| is_gimple_call (def1)
|| STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def1))
== vect_induction_def
|| (gimple_code (def1) == GIMPLE_PHI
&& STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def1))
== vect_internal_def
&& !is_loop_header_bb_p (gimple_bb (def1)))))))
|| vect_valid_reduction_input_p (def1)))
{
if (dump_enabled_p ())
report_vect_op (MSG_NOTE, def_stmt, "detected reduction: ");
@ -3215,15 +3208,7 @@ vect_is_simple_reduction (loop_vec_info loop_info, gimple *phi,
&& (code == COND_EXPR
|| !def2 || gimple_nop_p (def2)
|| !flow_bb_inside_loop_p (loop, gimple_bb (def2))
|| (def2 && flow_bb_inside_loop_p (loop, gimple_bb (def2))
&& (is_gimple_assign (def2)
|| is_gimple_call (def2)
|| STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def2))
== vect_induction_def
|| (gimple_code (def2) == GIMPLE_PHI
&& STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def2))
== vect_internal_def
&& !is_loop_header_bb_p (gimple_bb (def2)))))))
|| vect_valid_reduction_input_p (def2)))
{
if (! nested_in_vect_loop && orig_code != MINUS_EXPR)
{