[graphite] fix pr61929
authorAditya Kumar <aditya.k7@samsung.com>
Fri, 17 Jul 2015 16:34:21 +0000 (16:34 +0000)
committerSebastian Pop <spop@gcc.gnu.org>
Fri, 17 Jul 2015 16:34:21 +0000 (16:34 +0000)
commit247577525613274ed246537f195eda285087d814
treef5c008a61cb11b8aae86f54269a208938816706b
parent9298e25f6c5d5606fa140aa6a192b72f201daa56
[graphite] fix pr61929

This fixes bootstrap of GCC with BOOT_CFLAGS="-g -O2 -fgraphite-identity
-floop-nest-optimize -floop-block -floop-interchange -floop-strip-mine".  It
passes regstrap on amd64-linux.  A previous change
(https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=213816), replaced
isl_int with isl_val because isl_int would be deprecated. Since isl_val has
stricter checks, it exposed the bug.  In the test case (isl_set_max_val) would
return infinity which would remain unchecked.  We now check if the value
returned is an integer or not, and bail out if it isn't.  The other problem was
that we were allowing all kinds of data-refs in a scop.  Now we discard a scop
if it has any date-ref other than (ARRAY_REF, MEM_REF, COMPONENT_REF).

PR middle-end/61929
* graphite-dependences.c (add_pdr_constraints): Renamed
pdr->extent to pdr->subscript_sizes.
* graphite-interchange.c (build_linearized_memory_access): Add
back all gcc_assert's that the "isl_int to isl_val conversion"
patch has removed.  Refactored.
(pdr_stride_in_loop): Renamed pdr->extent to pdr->subscript_sizes.
* graphite-poly.c (new_poly_dr): Same.
(free_poly_dr): Same.
* graphite-poly.h (struct poly_dr): Same.
* graphite-scop-detection.c (stmt_has_simple_data_refs_p): Ignore
all data references other than ARRAY_REF, MEM_REF, and COMPONENT_REF.
* graphite-scop-detection.h: Fix space.
* graphite-sese-to-poly.c (build_pbb_scattering_polyhedrons): Add
back all gcc_assert's removed by a previous patch.
(wrap): Remove the_isl_ctx global variable that the same patch has
added.
(build_loop_iteration_domains): Same.
(add_param_constraints): Same.
(pdr_add_data_dimensions): Same.  Refactored.
(build_poly_dr): Renamed extent to subscript_sizes.

testsuite/
PR middle-end/61929
* gcc.dg/graphite/pr61929.c: New.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>
From-SVN: r225942
gcc/ChangeLog
gcc/graphite-dependences.c
gcc/graphite-interchange.c
gcc/graphite-poly.c
gcc/graphite-poly.h
gcc/graphite-scop-detection.c
gcc/graphite-scop-detection.h
gcc/graphite-sese-to-poly.c
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.dg/graphite/pr61929.c [new file with mode: 0644]