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Support for unroll and jam optimization. 

From-SVN: r217682
This commit is contained in:
Mircea Namolaru 2014-11-17 23:59:07 +01:00 committed by Mircea Namolaru
parent d6f1bcb23d
commit 46cdd0c8cd
3 changed files with 37 additions and 8 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2014-11-17 Mircea Namolaru <mircea.namolaru@inria.fr>
* doc/invoke.texi (floop-unroll-and-jam): Document
(loop-unroll-jam-size): Likewise.
(loop-unroll-jam-depth): Likewise.
* graphite-optimize-isl.c (getPrevectorMap_full): Modify comment.
(getScheduleForBandList): Replaced unsafe union_map reuse.
2014-11-17 Andrew Pinski <apinski@cavium.com>
* config/aarch64/thunderx.md: Remove copyright which should not

18
gcc/doc/invoke.texi
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@ -391,7 +391,8 @@ Objective-C and Objective-C++ Dialects}.
-fno-ira-share-spill-slots -fira-verbose=@var{n} @gol
-fisolate-erroneous-paths-dereference -fisolate-erroneous-paths-attribute @gol
-fivopts -fkeep-inline-functions -fkeep-static-consts -flive-range-shrinkage @gol
-floop-block -floop-interchange -floop-strip-mine -floop-nest-optimize @gol
-floop-block -floop-interchange -floop-strip-mine @gol
-floop-unroll-and-jam -floop-nest-optimize @gol
-floop-parallelize-all -flra-remat -flto -flto-compression-level @gol
-flto-partition=@var{alg} -flto-report -flto-report-wpa -fmerge-all-constants @gol
-fmerge-constants -fmodulo-sched -fmodulo-sched-allow-regmoves @gol
@ -8352,6 +8353,13 @@ optimizer based on the Pluto optimization algorithms. It calculates a loop
structure optimized for data-locality and parallelism. This option
is experimental.
@item -floop-unroll-and-jam
@opindex floop-unroll-and-jam
Enable unroll and jam for the ISL based loop nest optimizer. The unroll
factor can be changed using the @option{loop-unroll-jam-size} parameter.
The unrolled dimension (counting from the most inner one) can be changed
using the @option{loop-unroll-jam-depth} parameter. .
@item -floop-parallelize-all
@opindex floop-parallelize-all
Use the Graphite data dependence analysis to identify loops that can
@ -10469,6 +10477,14 @@ loop in the loop nest by a given number of iterations. The strip
length can be changed using the @option{loop-block-tile-size}
parameter. The default value is 51 iterations.
@item loop-unroll-jam-size
Specify the unroll factor for the @option{-floop-unroll-and-jam}. The
default value is 4.
@item loop-unroll-jam-depth
Specify the dimension to be unrolled (counting from the most inner loop)
for the @option{-floop-unroll-and-jam}. The default value is 2.
@item ipa-cp-value-list-size
IPA-CP attempts to track all possible values and types passed to a function's
parameter in order to propagate them and perform devirtualization.

19
gcc/graphite-optimize-isl.c
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@ -320,7 +320,7 @@ getPrevectorMap (isl_ctx *ctx, int DimToVectorize,
ip >= 0
The image of this map is the separation class. The range of this map includes
all the i that are multiple of 4 in the domain beside the greater one.
all the i multiple of 4 in the domain such as i + 3 is in the domain too.
*/
static isl_map *
@ -486,20 +486,25 @@ getScheduleForBandList (isl_band_list *BandList, isl_union_map **map_sepcl)
}
}
}
Schedule = isl_union_map_union (Schedule, PartialSchedule);
Schedule = isl_union_map_union (Schedule,
isl_union_map_copy(PartialSchedule));
isl_band_free (Band);
isl_space_free (Space);
if (!flag_loop_unroll_jam)
continue;
{
isl_union_map_free (PartialSchedule);
continue;
}
if (PartialSchedule_f)
*map_sepcl = isl_union_map_union (*map_sepcl,
PartialSchedule_f);
{
*map_sepcl = isl_union_map_union (*map_sepcl, PartialSchedule_f);
isl_union_map_free (PartialSchedule);
}
else
*map_sepcl = isl_union_map_union (*map_sepcl,
isl_union_map_copy (PartialSchedule));
*map_sepcl = isl_union_map_union (*map_sepcl, PartialSchedule);
}
return Schedule;