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The CLooG Code Generator in the Polyhedral Model

License: GNU Lesser General Public License v2.1

Shell 3.51% CMake 0.13% Makefile 1.63% C 88.50% Fortran 0.24% M4 6.00%

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cloog's Issues

compiler build warnings

With GCC 8.3.1 and with -Wextra, I see the following warnings. (Besides the sign comparison warnings, there are several 'unused parameter' ones.)

CC source/libcloog_isl_la-version.lo
source/union_domain.c: In function ‘cloog_scattering_list_read’:
source/union_domain.c:174:47: warning: unused parameter ‘nb_parameters’ [-Wunused-parameter]
CloogDomain **domain, int nb_statements, int nb_parameters)
~~~~^~~~~~~~~~~~~
source/union_domain.c: In function ‘cloog_union_domain_from_osl_scop’:
source/union_domain.c:332:19: warning: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Wsign-compare]
for (i = 0; i < osl_strings_size(scop->parameters->data); i++) {
^
source/union_domain.c:357:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Wsign-compare]
for (i = 0; (i < osl_strings_size(scatnames->names)) &&
^
CC source/isl/libcloog_isl_la-domain.lo
CC source/isl/libcloog_isl_la-constraints.lo
CC source/isl/libcloog_isl_la-backend.lo
CC test/generate_test_advanced.o
source/isl/domain.c: In function ‘cloog_scattering_fully_specified’:
source/isl/domain.c:51:24: warning: unused parameter ‘domain’ [-Wunused-parameter]
CloogDomain *domain)
~~~~~~~~~~~~~^~~~~~
source/isl/domain.c: In function ‘cloog_domain_sort’:
source/isl/domain.c:247:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nb_doms; i++) {
^
source/isl/domain.c:254:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nb_doms; ++i) {
^
source/isl/domain.c:257:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (j = 0; j < nb_doms; ++j)
^
source/isl/domain.c:261:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 1; i < nb_doms; ++i) {
^
source/isl/domain.c:290:23: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0, j = 0; i < nb_doms; j = (j + 1) % nb_doms) {
^
source/isl/domain.c:291:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (k = 0; k < nb_doms; ++k)
^
source/isl/domain.c:294:9: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
if (k < nb_doms)
^
source/isl/domain.c:296:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (k = 0; k < nb_doms; ++k)
^
source/isl/domain.c:303:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nb_doms; ++i)
^
source/isl/domain.c: In function ‘cloog_domain_read_scattering’:
source/isl/domain.c:505:39: warning: comparison of integer expressions of different signedness: ‘isl_size’ {aka ‘int’} and ‘unsigned int’ [-Wsign-compare]
if (isl_map_dim(scat, isl_dim_param) != nparam) {
^~
source/isl/domain.c:510:36: warning: comparison of integer expressions of different signedness: ‘isl_size’ {aka ‘int’} and ‘unsigned int’ [-Wsign-compare]
if (isl_map_dim(scat, isl_dim_in) != dim) {
^~
source/isl/domain.c: In function ‘isl_basic_set_read_from_matrix’:
source/isl/domain.c:578:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nrows; ++i) {
^
source/isl/domain.c: In function ‘isl_basic_map_read_from_matrix’:
source/isl/domain.c:611:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nrows; ++i) {
^
source/isl/domain.c: In function ‘constraint_can_stride’:
source/isl/domain.c:873:17: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < n_div; ++i) {
^
source/isl/domain.c:879:9: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
if (i < n_div)
^
source/isl/domain.c: In function ‘cloog_scattering_lazy_block’:
source/isl/domain.c:1283:13: warning: comparison of integer expressions of different signedness: ‘unsigned int’ and ‘isl_size’ {aka ‘int’} [-Wsign-compare]
if (n_scat != isl_map_dim(map2, isl_dim_out))
^~
source/isl/domain.c:1293:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < n_scat; ++i) {
^
source/isl/domain.c:1303:13: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
if (i + 1 < n_scat){
^
source/isl/domain.c:1318:12: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
block = i >= n_scat;
^~
source/isl/domain.c:1270:41: warning: unused parameter ‘scattdims’ [-Wunused-parameter]
CloogScatteringList *scattering, int scattdims)
~~~~^~~~~~~~~
source/isl/domain.c: In function ‘cloog_scattering_dimension’:
source/isl/domain.c:1370:69: warning: unused parameter ‘domain’ [-Wunused-parameter]
int cloog_scattering_dimension(CloogScattering *scatt, CloogDomain *domain)
~~~~~~~~~~~~~^~~~~~
source/isl/domain.c: In function ‘count_same_name’:
source/isl/domain.c:1645:25: warning: operand of ?: changes signedness from ‘isl_size’ {aka ‘int’} to ‘unsigned int’ due to unsignedness of other operand [-Wsign-compare]
s = t == type ? pos : isl_space_dim(dim, t);
^~~~~~~~~~~~~~~~~~~~~
source/isl/constraints.c: In function ‘cloog_constraint_set_contains_level’:
source/isl/constraints.c:107:19: warning: unused parameter ‘nb_parameters’ [-Wunused-parameter]
int level, int nb_parameters)
~~~~^~~~~~~~~~~~~
source/isl/constraints.c: In function ‘basic_set_cloog_dim_to_isl_dim’:
source/isl/constraints.c:128:11: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
if (pos < dim) {
^
source/isl/constraints.c: In function ‘cloog_constraint_set_defining_inequalities’:
source/isl/constraints.c:211:42: warning: unused parameter ‘nb_par’ [-Wunused-parameter]
int level, CloogConstraint **lower, int nb_par)
~~~~^~~~~~
source/isl/constraints.c: In function ‘cloog_constraint_set_n_iterators’:
source/isl/constraints.c:247:75: warning: unused parameter ‘n_par’ [-Wunused-parameter]
int cloog_constraint_set_n_iterators(CloogConstraintSet *constraints, int n_par)
~~~~^~~~~
source/isl/constraints.c: In function ‘cloog_equal_add’:
source/isl/constraints.c:417:66: warning: unused parameter ‘matrix’ [-Wunused-parameter]
void cloog_equal_add(CloogEqualities *equal, CloogConstraintSet *matrix,
~~~~~~~~~~~~~~~~~~~~^~~~~~
source/isl/constraints.c:418:42: warning: unused parameter ‘nb_par’ [-Wunused-parameter]
int level, CloogConstraint *line, int nb_par)
~~~~^~~~~~
source/isl/constraints.c: In function ‘cloog_constraint_set_normalize’:
source/isl/constraints.c:456:57: warning: unused parameter ‘matrix’ [-Wunused-parameter]
void cloog_constraint_set_normalize(CloogConstraintSet *matrix, int level)
~~~~~~~~~~~~~~~~~~~~^~~~~~
source/isl/constraints.c:456:69: warning: unused parameter ‘level’ [-Wunused-parameter]
void cloog_constraint_set_normalize(CloogConstraintSet *matrix, int level)
~~~~^~~~~
source/isl/constraints.c: In function ‘cloog_constraint_set_simplify’:
source/isl/constraints.c:494:19: warning: unused parameter ‘equal’ [-Wunused-parameter]
CloogEqualities *equal, int level, int nb_par)

source/isl/constraints.c:494:30: warning: unused parameter ‘level’ [-Wunused-parameter]
CloogEqualities *equal, int level, int nb_par)
                        ~~~~^~~~~
source/isl/constraints.c:494:41: warning: unused parameter ‘nb_par’ [-Wunused-parameter]
CloogEqualities *equal, int level, int nb_par)
                                   ~~~~^~~~~~
source/isl/constraints.c: In function ‘constraint_cloog_dim_to_isl_dim’:
source/isl/constraints.c:510:11: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
 if (pos < dim) {
         ^
source/isl/constraints.c: In function ‘div_expr’:
source/isl/constraints.c:536:29: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0, nb_elts = 0; i < dim; ++i) {
                           ^
source/isl/constraints.c:557:29: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0, nb_elts = 0; i < dim; ++i) {
                           ^
source/isl/constraints.c: In function ‘cloog_constraint_copy_coefficients’:
source/isl/constraints.c:806:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < dim; ++i)
              ^
source/isl/constraints.c: In function ‘cloog_constraint_set_reduce’:
source/isl/constraints.c:941:41: warning: unused parameter ‘nb_par’ [-Wunused-parameter]
int level, CloogEqualities *equal, int nb_par, cloog_int_t *bound)
                                   ~~~~^~~~~~
source/isl/constraints.c: In function ‘extract_stride_offset’:
source/isl/constraints.c:1082:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nparam; ++i) {
              ^
source/isl/constraints.c:1087:16: warning: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Wsign-compare]
for (i = 0; i < nvar; ++i) {
              ^

Scattering iterators generation results in compilation failures

If an iteration variable is declared before the loop (c89 requires this to compile), the CLooG-generated code with its declaration inserted into the original code results in compilation error of variable redefinition.

int main() {
  int i;
#pragma scop
  /* Scattering iterators. */
  int i;
  for (i=0;i<=41;i++) {
    S1(i);
  }
#pragma endscop
  return 0;
}

cloog 0.18.2 install failure

On 12/20/2013 08:55 PM, Jack Howarth wrote:

Taj,
The new cloog 0.18.2 release fails when a configure build tries to install...

make install DESTDIR=/sw/src/fink.build/root-cloog-org2-0.18.2-1 VERBOSE=1
Making install in .
test -z "/sw/lib" || autoconf/install-sh -c -d "/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib"
/bin/sh ./libtool --mode=install /usr/bin/install -c libcloog-isl.la '/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib'
libtool: install: /usr/bin/install -c .libs/libcloog-isl.4.dylib /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/libcloog-isl.4.dylib
libtool: install: (cd /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib && { ln -s -f libcloog-isl.4.dylib libcloog-isl.dylib || { rm -f libcloog-isl.dylib && ln -s libcloog-isl.4.dylib libcloog-isl.dylib; }; })
libtool: install: /usr/bin/install -c .libs/libcloog-isl.lai /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/libcloog-isl.la
libtool: install: /usr/bin/install -c .libs/libcloog-isl.a /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/libcloog-isl.a
libtool: install: chmod 644 /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/libcloog-isl.a
libtool: install: ranlib /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/libcloog-isl.a
libtool: warning: remember to run 'libtool --finish /sw/lib'
test -z "/sw/bin" || autoconf/install-sh -c -d "/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/bin"
/bin/sh ./libtool --mode=install /usr/bin/install -c cloog '/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/bin'
libtool: install: /usr/bin/install -c .libs/cloog /sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/bin/cloog
/usr/bin/install -c -m 644 cloog-isl.pc "/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/pkgconfig/cloog-isl.pc"
/usr/bin/install -c -m 644 "./cmake/isl-config.cmake" "/sw/src/fink.build/root-cloog-org2-0.18.2-1/sw/lib/isl/"
install: ./cmake/isl-config.cmake: No such file or directory
make[2]: *** [install-data-local] Error 71
make[1]: *** [install-am] Error 2

Apparently the new release has dropped the cmake subdirectory from the toplevel of the source distribution.

Thanks Jack for noticing so quickly. It seems the release was not tested
in that way.

Taj Khan, it seems we need a subsequent release to fix this. (Do not
recreate the tar ball with different content, as this will break all MD5
hashes of distributions).

Cheers,
Tobias

WTF? You don't have a working TeX

Why do you force people to install heavy and unnecessary package?
It really sucks!

Making all in .
texi2dvi -I ./doc --pdf ../../src/cloog/doc/cloog.texi -o doc/cloog.pdf
You don't have a working TeX binary (tex) installed anywhere in
your PATH, and texi2dvi cannot proceed without one.  If you want to use
this script, you'll need to install TeX (if you don't have it) or change
your PATH or TEX environment variable (if you do).  See the --help
output for more details.

For information about obtaining TeX, please see http://tug.org/texlive,
or do a web search for TeX and your operating system or distro.
make[1]: *** [Makefile:2308: doc/cloog.pdf] Error 1
make: *** [Makefile:1579: all-recursive] Error 1

CLooG: SPECIAL test FAILED

One test is failing for version 0.18.1
I am the maintainer of the AUR package.
I've disabled the make check for now to keep the package working, but this is just a temp. solution.

             /*-----------------------------------------------*
              *       Testing CLooG: SPECIAL test set       
              *-----------------------------------------------*/
Check file ./isl/unroll.cloog \c
(options -first-unroll 1 ), \c
generating... \c
PASS
Check file ./isl/jacobi-shared.cloog \c
(options -f 4 -l -1 -override -strides 1 -sh 1 ), \c
generating... \c
--- cloog_temp  2015-01-13 22:20:38.094565777 +0100
+++ ./isl/jacobi-shared.c   2013-10-11 09:27:03.000000000 +0200
@@ -3,7 +3,7 @@
   if ((16*floord(t0-1,16) >= -N+g1+t0+1) && (16*floord(g1+t0-3,16) >= -N+g1+t0+1) && (32*floord(t1-1,32) >= -N+g2+t1+1) && (32*floord(g2+t1-3,32) >= t1-32)) {
     for (c0=max(-16*floord(t0-1,16)+t0,-16*floord(g1+t0-3,16)+t0);c0<=min(32,N-g1-1);c0+=16) {
       for (c1=-32*floord(t1-1,32)+t1;c1<=min(32,N-g2-1);c1+=32) {
-        if (c1 >= 1) {
+        if ((c1 >= 1) && (c1 <= 32)) {
           S1(c0+g1-1,c1+g2-1);
         }
       }
FAIL: ./isl/jacobi-shared.c is not the same

-compilable is broken

With -compilable CLooG generates code with iterator redefinition. Not compilable.

int main() {
  /* Scattering iterators. */
  int i;
  /* Original iterators. */
  int i;
<...>
}

Variable names may be changed accidentally

Source code

#pragma scop
for (int i = 0; i < N; i++)
  a_i_k[i] = 0;
#pragma endscop

raised to the model by Clan and regenerated by CLooG is transformed to

#pragma scop
  /* Scattering iterators. */
  int i;
if (N >= 1) {
  for (i=0;i<=N-1;i++) {
    a_(i)_k[i] = 0;
  }
}
#pragma endscop

The i symbol in the variable name is being processed as if it were iterator.

Installation problems.

hi, there is some light version of Tex. It requires almost 8gb, if I install Tex according to the error description; "You don't havea working....."

Apparent bug working with 0.18.5

Dear all,

I am struggling with what seems to be a code generation bug working with v0.18.5. I am providing as input the 9-dimensional iteration polyhedron consisting of 51 explicitly defined faces as defined in the CLooG file attached.

bug.cloog.txt

This polyhedron contains 7546 points (confirmed by barvinok). However, the code generated by CLooG runs the perfectly nested statement 7693 times. Upon further investigation, the first 6223 iteration vectors issued are correct, with vector #6223 being [1, 1, 0, 1, 0, -1, 16, 55, 118]. But afterwards, vector #6224, which should be [1, 1, 0, 2, -1, -1, 11, 56, -28], becomes [1,1,0,1,0,0,13,49,147].
Vector #6223 had already reached the 6th-dimension upper bounds (in particular, those defined in rows 13 and 14 of the input matrix) and therefore the generated vector is illegal under the constraints imposed by the original matrix (i.e., M·i < 0 for some elements of the resulting vector).

Sorry if my explanation is not completely descriptive, in which case please let me know if I can provide more details or codes to help with the debugging process.

2 tests fail in 0.18.3 with isl 0.12.2

I have 2 tests failing on 0.18.3...one of them is the same as another post here.
In preparation for compiling gcc4.9.2, I used gmake and gcc4.7.2 to compile
gmp-6.0.0, mpfr-3.1.2, mpc-1.0.2, isl-0.14
When I attempted to compile cloog-0.18.3 configure could not find isl installed since configure only looks for versions up to 12.

I then compiled isl-0.12.2 and changed the sym links in lib:

libisl.a            (from isl-0.12.2)
libisl.la           (from isl-0.12.2)
libisl.so -> libisl.so.10.2.2
libisl.so.10 -> libisl.so.10.2.2
libisl.so.10.2.2        (from isl-0.12.2)
libisl.so.10.2.2-gdb.py (from isl-0.12.2)
libisl.so.13 -> libisl.so.13.1.0
libisl.so.13.1.0        (from isl-0.14)
libisl.so.13.1.0-gdb.py (from isl-0.14)

When I attempted to compile cloog-0.18.3 AGAIN, configure passed, everything compiled and all tests passed.

I then compiled gcc4.9.2 with these libraries and it completed and all the tests passed.

I then went back and recompiled the libs once more using gcc4.9.2.
All tests passed for each lib before and after each libs install.

UNTIL I got to cloog. It's failing these two tests..output below.

A similar thread says to use isl-0.14, but cloog-0.18.3 configure does not detect it.
Two questions:

Does these errors really cause a problem for the package?
How do you override the configure test and link with isl-0.14?

ERROR LOGS:

Check file /appl/gfpip/local_build/src/bastoul.net/cloog-0.18.3/test/reservoir/QR.cloog (no option), generating... 
    --- cloog-0.18.3/test/reservoir/QR.c       2014-12-08 10:05:37.000000000 +0000
    +++ cloog_temp  2015-03-20 20:41:16.431838000 +0000
    @@ -1,12 +1,6 @@
    -/* Generated from ./reservoir/QR.cloog by CLooG 0.18.1-2-g43fc508 gmp bits in 0.07s. */
    +/* Generated from cloog-0.18.3/test/reservoir/QR.cloog by CLooG 0.18.3 gmp bits in 1.44s. */
     if (N >= 1) {
       S1(0);
    -  if ((M <= 0) && (N >= 2)) {
    -    S3(0);
    -    S10(0);
    -    S1(1);
    -    S5(0);
    -  }
    if ((M >= 1) && (N == 1)) {
         for (c4=0;c4<=M-1;c4++) {
           S2(0,c4);
    @@ -34,6 +28,12 @@
         S10(0);
         S1(1);
         S5(0);
    +  }
    +  if ((M <= 0) && (N >= 2)) {
    +    S3(0);
    +    S10(0);
    +    S1(1);
    +    S5(0);
       }
    for (c2=2;c2<=min(M,N-1);c2++) {
         for (c4=c2-1;c4<=N-1;c4++) {
    -e 
    FAIL: cloog-0.18.3/test/reservoir/QR.c has a problem

Check file cloog-0.18.3/test/isl/jacobi-shared.cloog (options -f 4 -l -1 -override -strides 1 -sh 1 ), generating... 

--- cloog-0.18.3/test/isl/jacobi-shared.c        2014-12-08 10:05:37.000000000 +0000
+++ cloog_temp  2015-03-20 20:41:32.965265000 +0000
@@ -3,7 +3,7 @@
   if ((16*floord(t0-1,16) >= -N+g1+t0+1) && (16*floord(g1+t0-3,16) >= -N+g1+t0+1) && (32*floord(t1-1,32) >= -N+g2+t1+1) && (32*floord(g2+t1-3,32) >=
t1-32)) {
     for (c0=max(-16*floord(t0-1,16)+t0,-16*floord(g1+t0-3,16)+t0);c0<=min(32,N-g1-1);c0+=16) {
       for (c1=-32*floord(t1-1,32)+t1;c1<=min(32,N-g2-1);c1+=32) {
-        if (c1 >= 1) {
+        if ((c1 >= 1) && (c1 <= 32)) {
           S1((c0+g1-1),(c1+g2-1));
         }
       }

FAIL: cloog-0.18.3/test/isl/jacobi-shared.c has a problem

Crash on parallel code generation (openscop)

ClooG crashes when osl_loop extension has directive = 1 (omp), but does not crash if it is changed to other valid values.

<OpenScop>

# =============================================== Global
# Language
C

# Context
CONTEXT
0 3 0 0 0 1

# Parameters are provided
1
<strings>
N
</strings>

# Number of statements
1

# =============================================== Statement 1
# Number of relations describing the statement:
3

# ----------------------------------------------  1.1 Domain
DOMAIN
3 4 1 0 0 1
# e/i|  i |  N |  1  
   1    1    0    0    ## i >= 0
   1   -1    1   -1    ## -i+N-1 >= 0
   1    0    1   -1    ## N-1 >= 0

# ----------------------------------------------  1.2 Scattering
SCATTERING
3 7 3 1 0 1
# e/i| c1   c2   c3 |  i |  N |  1  
   0   -1    0    0    0    0    0    ## c1 == 0
   0    0   -1    0    1    0    0    ## c2 == i
   0    0    0   -1    0    0    0    ## c3 == 0

# ----------------------------------------------  1.3 Access
READ
1 5 1 1 0 1
# e/i| Arr|  i |  N |  1  
   0   -1    0    0    1    ## Arr == i

# ----------------------------------------------  1.4 Statement Extensions
# Number of Statement Extensions
1
<body>
# Number of original iterators
1
# List of original iterators
i
# Statement body expression
S(i);
</body>

# =============================================== Extensions
<scatnames>
b0 i b1
</scatnames>

<arrays>
# Number of arrays
3
# Mapping array-identifiers/array-names
1 i
2 N
3 S
</arrays>

<coordinates>
# File name
ttt.c
# Starting line and column
2 0
# Ending line and column
4 0
# Indentation
0
</coordinates>

<loop>
1
i
1
1
(null)
1
</loop>

</OpenScop>

Build failure at "doc" generation rules to generate cloog.pdf for version 0.21.1

While I was trying to build cloog-0.21.1, the build fails at doc/cloog.pdf generation from doc/cloog.texi file. I am using Ubuntu 20.04.
Already I have opened a separate issue #50 for this.

The error message looks like following

This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/Debian) (preloaded format=pdfetex)
 restricted \write18 enabled.
entering extended mode

.... bla bla bla

/usr/bin/texi2dvi: pdfetex exited with bad status, quitting.
make[1]: *** [Makefile:2303: doc/cloog.pdf] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/pal-vbox/compiler-projects/cloog-0.21.1-test/build'
make: *** [Makefile:1581: all-recursive] Error 1

How to solve this issue?
Thanks in advance!

isl 0.19 support

Failed building with isl 0.19

./.libs/libcloog-isl.so: undefined reference to `isl_basic_set_drop_constraint'
./.libs/libcloog-isl.so: undefined reference to `isl_set_drop_basic_set'
./.libs/libcloog-isl.so: undefined reference to `isl_set_copy_basic_set'
./.libs/libcloog-isl.so: undefined reference to `isl_basic_map_from_basic_set'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:783: cloog] Error 1
make[1]: Leaving directory '/home/aaron/datenhalter/shelf/aur-packages/cloog/src/cloog-0.18.5'
make: *** [Makefile:1062: all-recursive] Error 1

CLooG stalls with incorrect input

When supplied a (partially) incorrect input, CLooG emits error messages and continues to expect more input even if after EOF.

The shortest example is echo C | cloog stdin. Same is true when reading from a file.

I didn't figure out the pattern yet, but given enough integers in the input, CLooG eventually terminates.

Cannot generate a pdf or html from doc/cloog.texi

Hello

According to the Cloog Manual "5 Documentation", I have tried to generate the pdf doc for cloog version 0.21.1. But it is giving me following error.

texi2pdf cloog.texi 
This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/Debian) (preloaded format=pdfetex)
 restricted \write18 enabled.
entering extended mode

(./cloog.texi (/usr/share/texmf/tex/texinfo/texinfo.tex
Loading texinfo [version 2019-09-20.22]: pdf, fonts, markup, glyphs,
page headings, tables, conditionals, indexing, sectioning, toc, environments,
defuns, macros, cross references, insertions, localization, formatting,
and turning on texinfo input format.)
./cloog.texi:38: I can't find file `gitversion.texi'.
@temp ->@input gitversion.texi 
                               
@includezzz ...and @input #1 }@expandafter }@temp 
                                                  @popthisfilestack 
l.38 @include gitversion.texi
                             
(Press Enter to retry, or Control-D to exit)
Please type another input file name
./cloog.texi:38: Emergency stop.
@temp ->@input gitversion.texi 
                               
@includezzz ...and @input #1 }@expandafter }@temp 
                                                  @popthisfilestack 
l.38 @include gitversion.texi
                             
./cloog.texi:38:  ==> Fatal error occurred, no output PDF file produced!
Transcript written on cloog.log.
/usr/bin/texi2dvi: pdfetex exited with bad status, quitting.

Also I have tried makeinfo --html --no-split cloog.texi. But no luck.

Later I have found an pdf online doc v0.16.0. Now my questions are

How can I resolve the pdf doc gen issue for latest cloog 0.21.0 version?
If I can't, would it be okay to follow the online pdf v0.16.0?

Thanks in advance!

loop execution time reporting

See CLooG-Dev topic :
https://groups.google.com/forum/?hl=en#!topic/cloog-development/jlGhyRCxri8

Missing parenthesis in generated code

(reported by Tobias Grosser)
pluto compiled durbin from polybench 3.2 crashes at execution

(explanation by Uday Bondhugula)
the reason is

There is a missing parenthesis in the generated code:

for (t3=t2;t3<=2_t2-1;t3++) {
y[-t2+t3][t2]=y[-t2+t3][t2-1]+alpha[t2]_y[t2- -t2+t3-1][t2-1];;
^^^^^
}

since the remappings are:

k = t2
i = t3-t2

It should've been "t2- (-t2+t3)-1]

Can you quickly look at the thread above? It should make sense to you quickly. Given this, why shouldn't the remappings be not generated as:

S8(t2, (t3-t2))

instead of

S8(t2, t3-t2);

Build warning - source/pprint.c

I notice one build warning with
gcc (GCC) 9.1.1 20190503 (Red Hat 9.1.1-1)

CC source/libcloog_isl_la-statement.lo
In function ‘pprint_replacestr’,
inlined from ‘pprint_replacestr’ at source/pprint.c:436:7:
source/pprint.c:457:5: warning: ‘strncat’ specified bound depends on the length of the source argument [-Wstringop-overflow=]
457 | strncat(result, replace, strlen(replace));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The line numbers may not match with the master branch (as I have a forked version), but here's the code snippet for context:

while ((pos1 = strstr(pos, sub))) {
  int len = (pos1 - pos);
  strncat(result, pos, len);
  strncat(result, replace, strlen(replace));
  pos = (pos1 + strlen(sub));
}

Dependency on texinfo - tex/latex packages fonts

Cloog's build (default make target) currently depends not just on texinfo but on the installation of a large number of other tex/latex/fonts packages just so that the doc manual can be built. While these are readily available in Ubuntu/Fedora repos, if one doesn't know the minimum number of packages needed, several hundred MBs of packages need to be installed to just satisfy this dependency: it's not just texinfo but a good amount of the tex installation including fonts are needed to build the manual. I often need to recall the package names, and it even crosses a GB sometimes on a system that otherwise doesn't have/need texlive. (I think one needs to install texinfo, texlive-latex-recommended, texlive-fonts-recommended, texlive-fonts-extra -- it's more than a GB IIRC.)

Can the build of the manual be removed from all default targets and from 'make all'? It can be optional.

make[1]: Entering directory '/home/uday/pluto/cloog-isl'
  CCLD     libcloog-isl.la
texi2dvi -I ./doc --pdf doc/cloog.texi -o doc/cloog.pdf
/bin/bash: line 1: texi2dvi: command not found
make[1]: *** [Makefile:2308: doc/cloog.pdf] Error 127
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/uday/pluto/cloog-isl'
make: *** [Makefile:1581: all-recursive] Error 1

isl-0.20 support

isl released a new version, there were some random reports about failing tests in CLooG's mailing list, which may be related

@harenome @Syllo want to take a look?

Status of https://www.bastoul.net/cloog website

Same question as Homebrew/homebrew-core#24811 (comment)

Why does https://www.bastoul.net/cloog/download.php show 0.18.4 and http://repo.or.cz/w/cloog.git ? Can it be updated to show 0.19.0 and https://github.com/periscop/cloog ?