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Fix PR47019: parameters of a SCoP are SCEV analyzable.

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2010-12-22  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/47019
	* sese.h (scev_analyzable_p): Parameters of a SCoP are SCEV analyzable.

	* gfortran.dg/graphite/pr47019.f: New.

From-SVN: r168182
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Sebastian Pop 2010-12-22 21:19:34 +00:00 • committed by Sebastian Pop
parent f4da8dce7a
commit 9be8ba7e82
4 changed files with 24 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-12-22 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/47019
* sese.h (scev_analyzable_p): Parameters of a SCoP are SCEV analyzable.
2010-12-22 Nathan Froyd <froydnj@codesourcery.com>
* c-aux-info.c (gen_formal_list_for_type): Use prototype_p.

3
gcc/sese.h
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@ -413,7 +413,8 @@ scev_analyzable_p (tree def, sese region)
scev = scalar_evolution_in_region (region, loop, def);
return !chrec_contains_undetermined (scev)
&& TREE_CODE (scev) != SSA_NAME
&& (TREE_CODE (scev) != SSA_NAME
|| !defined_in_sese_p (scev, region))
&& (tree_does_not_contain_chrecs (scev)
|| evolution_function_is_affine_p (scev));
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-12-22 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/47019
* gfortran.dg/graphite/pr47019.f: New.
2010-12-22 Jason Merrill <jason@redhat.com>
* g++.dg/init/volatile2.C: New.

12
gcc/testsuite/gfortran.dg/graphite/pr47019.f Normal file
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@ -0,0 +1,12 @@
! { dg-options "-O -ftree-pre -fgraphite-identity -fno-tree-copy-prop" }
subroutine foo (ldmx,ldmy,v)
integer :: ldmx, ldmy, v, l, m
dimension v(5,ldmx,ldmy)
do m = 5, 1, -1
do l = m+1, 5
v(m,3,2) = v(1,3,2)
end do
v(m,3,2) = m
end do
end