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tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer): Update comment. 

gcc/

	* tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer): Update
	comment.
	(vect_update_inits_of_drs): Likewise.
	(vect_create_cond_for_alias_checks): Likewise.
	* tree-vect-loop.c (vect_get_known_peeling_cost): Likewise.

From-SVN: r238466
This commit is contained in:
Ilya Enkovich 2016-07-19 10:04:02 +00:00 committed by Ilya Enkovich
parent f6918a8b63
commit d9157f1514
3 changed files with 27 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2016-07-19 Ilya Enkovich <ilya.enkovich@intel.com>
* tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer): Update
comment.
(vect_update_inits_of_drs): Likewise.
(vect_create_cond_for_alias_checks): Likewise.
* tree-vect-loop.c (vect_get_known_peeling_cost): Likewise.
2016-07-19 Richard Biener <rguenther@suse.de>
PR lto/71907

12
gcc/tree-vect-loop-manip.c
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@ -1735,6 +1735,10 @@ vect_update_ivs_after_vectorizer (loop_vec_info loop_vinfo, tree niters,
iterates NITERS times, the new epilog loop iterates
NITERS % VECTORIZATION_FACTOR times.
If CHECK_PROFITABILITY is 1 then profitability check is generated
using TH as a cost model profitability threshold of iterations for
vectorization.
The original loop will later be made to iterate
NITERS / VECTORIZATION_FACTOR times (this value is placed into RATIO).
@ -1993,7 +1997,11 @@ vect_update_inits_of_drs (loop_vec_info loop_vinfo, tree niters)
'niters' is set to the misalignment of one of the data references in the
loop, thereby forcing it to refer to an aligned location at the beginning
of the execution of this loop. The data reference for which we are
peeling is recorded in LOOP_VINFO_UNALIGNED_DR. */
peeling is recorded in LOOP_VINFO_UNALIGNED_DR.
If CHECK_PROFITABILITY is 1 then profitability check is generated
using TH as a cost model profitability threshold of iterations for
vectorization. */
void
vect_do_peeling_for_alignment (loop_vec_info loop_vinfo, tree ni_name,
@ -2313,7 +2321,7 @@ vect_create_cond_for_alias_checks (loop_vec_info loop_vinfo, tree * cond_expr)
The test generated to check which version of loop is executed
is modified to also check for profitability as indicated by the
cost model initially.
cost model threshold TH.
The versioning precondition(s) are placed in *COND_EXPR and
*COND_EXPR_STMT_LIST. */

10
gcc/tree-vect-loop.c
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@ -3065,7 +3065,15 @@ vect_get_known_peeling_cost (loop_vec_info loop_vinfo, int peel_iters_prologue,
Return the number of iterations required for the vector version of the
loop to be profitable relative to the cost of the scalar version of the
loop. */
loop.
*RET_MIN_PROFITABLE_NITERS is a cost model profitability threshold
of iterations for vectorization. -1 value means loop vectorization
is not profitable. This returned value may be used for dynamic
profitability check.
*RET_MIN_PROFITABLE_ESTIMATE is a profitability threshold to be used
for static check against estimated number of iterations. */
static void
vect_estimate_min_profitable_iters (loop_vec_info loop_vinfo,