2015-02-05 04:55:43 +08:00
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isl is a thread-safe C library for manipulating sets and relations
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of integer points bounded by affine constraints. The descriptions of
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the sets and relations may involve both parameters and existentially
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quantified variables. All computations are performed in exact integer
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arithmetic using GMP.
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isl is released under the MIT license, but depends on the LGPL GMP
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library.
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Minimal compilation instructions:
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./configure
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make
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make install
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If you are taking the source from the git repository, then you first
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need to do
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git clone git://repo.or.cz/isl.git
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./autogen.sh
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For more information, see doc/user.pod or the generated documentation.
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[Polly] Update ISL to isl-0.22.1-87-gfee05a13.
The primary motivation is to fix an assertion failure in
isl_basic_map_alloc_equality:
isl_assert(ctx, room_for_con(bmap, 1), return -1);
Although the assertion does not occur anymore, I could not identify
which of ISL's commits fixed it.
Compared to the previous ISL version, Polly requires some changes for this update
* Since ISL commit
20d3574 "perform parameter alignment by modifying both arguments to function"
isl_*_gist_* and similar functions do not always align the paramter
list anymore. This caused the parameter lists in JScop files to
become out-of-sync. Since many regression tests use JScop files with
a fixed parameter list and order, we explicitly call align_params to
ensure a predictable parameter list.
* ISL changed some return types to isl_size, a typedef of (signed) int.
This caused some issues where the return type was unsigned int before:
- No overload for std::max(unsigned,isl_size)
- It cause additional 'mixed signed/unsigned comparison' warnings.
Since they do not break compilation, and sizes larger than 2^31
were never supported, I am going to fix it separately.
* With the change to isl_size, commit
57d547 "isl_*_list_size: return isl_size"
also changed the return value in case of an error from 0 to -1. This
caused undefined looping over isl_iterator since the 'end iterator'
got index -1, never reached from the 'begin iterator' with index 0.
* Some internal changes in ISL caused the number of operations to
increase when determining access ranges to determine aliasing
overlaps. In one test, this caused exceeding the default limit of
800000. The operations-limit was disabled for this test.
2020-02-11 04:51:33 +08:00
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New releases are announced on http://groups.google.com/group/isl-announce
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2015-02-05 04:55:43 +08:00
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If you use isl, you can let me know by stacking
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[Polly] Update ISL to isl-0.22.1-87-gfee05a13.
The primary motivation is to fix an assertion failure in
isl_basic_map_alloc_equality:
isl_assert(ctx, room_for_con(bmap, 1), return -1);
Although the assertion does not occur anymore, I could not identify
which of ISL's commits fixed it.
Compared to the previous ISL version, Polly requires some changes for this update
* Since ISL commit
20d3574 "perform parameter alignment by modifying both arguments to function"
isl_*_gist_* and similar functions do not always align the paramter
list anymore. This caused the parameter lists in JScop files to
become out-of-sync. Since many regression tests use JScop files with
a fixed parameter list and order, we explicitly call align_params to
ensure a predictable parameter list.
* ISL changed some return types to isl_size, a typedef of (signed) int.
This caused some issues where the return type was unsigned int before:
- No overload for std::max(unsigned,isl_size)
- It cause additional 'mixed signed/unsigned comparison' warnings.
Since they do not break compilation, and sizes larger than 2^31
were never supported, I am going to fix it separately.
* With the change to isl_size, commit
57d547 "isl_*_list_size: return isl_size"
also changed the return value in case of an error from 0 to -1. This
caused undefined looping over isl_iterator since the 'end iterator'
got index -1, never reached from the 'begin iterator' with index 0.
* Some internal changes in ISL caused the number of operations to
increase when determining access ranges to determine aliasing
overlaps. In one test, this caused exceeding the default limit of
800000. The operations-limit was disabled for this test.
2020-02-11 04:51:33 +08:00
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https://www.openhub.net/p/isl on Open Hub.
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2015-02-05 04:55:43 +08:00
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For bug reports, feature requests and questions,
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contact http://groups.google.com/group/isl-development
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Whenever you report a bug, please mention the exact version of isl
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that you are using (output of "./isl_cat --version"). If you are unable
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to compile isl, then report the git version (output of "git describe")
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or the version included in the name of the tarball.
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If you use isl for your research, you are invited do cite
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the following paper and/or the paper(s) describing the specific
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operations you use.
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@incollection{Verdoolaege2010isl,
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author = {Verdoolaege, Sven},
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title = {isl: An Integer Set Library for the Polyhedral Model},
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booktitle = {Mathematical Software - ICMS 2010},
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series = {Lecture Notes in Computer Science},
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editor = {Fukuda, Komei and Hoeven, Joris and Joswig, Michael and
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Takayama, Nobuki},
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publisher = {Springer},
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isbn = {978-3-642-15581-9},
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pages = {299-302},
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volume = {6327},
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year = {2010}
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}
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