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| author | Sebastian Pop <sebastian.pop@amd.com> | 2008-01-16 19:26:26 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2008-01-16 19:26:26 +0000 |
| commit | d49c149d623262135d31abd73b2ff294c3fb3940 (patch) | |
| tree | f21d819119dcaf84a89f446be25eec089e1b66bc /gcc/lambda-code.c | |
| parent | a03c6d64f468ff2aaebcf2a87bb589938264bc38 (diff) | |
| download | gcc-d49c149d623262135d31abd73b2ff294c3fb3940.zip gcc-d49c149d623262135d31abd73b2ff294c3fb3940.tar.gz gcc-d49c149d623262135d31abd73b2ff294c3fb3940.tar.bz2 | |
lambda-code.c (lambda_transform_legal_p): Handle the case of no dependences in the dependence_relations vector.
2008-01-16 Sebastian Pop <sebastian.pop@amd.com>
* lambda-code.c (lambda_transform_legal_p): Handle the case of
no dependences in the dependence_relations vector.
From-SVN: r131577
Diffstat (limited to 'gcc/lambda-code.c')
| -rw-r--r-- | gcc/lambda-code.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/lambda-code.c b/gcc/lambda-code.c index 0b67231..dc656d3 100644 --- a/gcc/lambda-code.c +++ b/gcc/lambda-code.c @@ -2595,11 +2595,16 @@ lambda_transform_legal_p (lambda_trans_matrix trans, gcc_assert (LTM_COLSIZE (trans) == nb_loops && LTM_ROWSIZE (trans) == nb_loops); - /* When there is an unknown relation in the dependence_relations, we - know that it is no worth looking at this loop nest: give up. */ + /* When there are no dependences, the transformation is correct. */ + if (VEC_length (ddr_p, dependence_relations) == 0) + return true; + ddr = VEC_index (ddr_p, dependence_relations, 0); if (ddr == NULL) return true; + + /* When there is an unknown relation in the dependence_relations, we + know that it is no worth looking at this loop nest: give up. */ if (DDR_ARE_DEPENDENT (ddr) == chrec_dont_know) return false; |