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| author | Richard Sandiford <richard.sandiford@linaro.org> | 2018-01-03 07:14:31 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2018-01-03 07:14:31 +0000 |
| commit | 9d2f08ab97bea3c299cce96a0760904501e002dd (patch) | |
| tree | e47f22b11c033a18b86e50ce91d45d804751f54e /gcc/omp-expand.c | |
| parent | c5126ce8cae4f14194414e266be91fdc4b756807 (diff) | |
poly_int: omp_max_vf
This patch makes omp_max_vf return a polynomial vectorization factor.
We then need to be able to stash a polynomial value in
OMP_CLAUSE_SAFELEN_EXPR too:
/* If max_vf is non-zero, then we can use only a vectorization factor
up to the max_vf we chose. So stick it into the safelen clause. */
For now the cfgloop safelen is still constant though.
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* omp-general.h (omp_max_vf): Return a poly_uint64 instead of an int.
* omp-general.c (omp_max_vf): Likewise.
* omp-expand.c (omp_adjust_chunk_size): Update call to omp_max_vf.
(expand_omp_simd): Handle polynomial safelen.
* omp-low.c (omplow_simd_context): Add a default constructor.
(omplow_simd_context::max_vf): Change from int to poly_uint64.
(lower_rec_simd_input_clauses): Update accordingly.
(lower_rec_input_clauses): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r256129
Diffstat (limited to 'gcc/omp-expand.c')
| -rw-r--r-- | gcc/omp-expand.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/omp-expand.c b/gcc/omp-expand.c index 663711b3aa4..aa580e2051f 100644 --- a/gcc/omp-expand.c +++ b/gcc/omp-expand.c @@ -205,8 +205,8 @@ omp_adjust_chunk_size (tree chunk_size, bool simd_schedule) if (!simd_schedule) return chunk_size; - int vf = omp_max_vf (); - if (vf == 1) + poly_uint64 vf = omp_max_vf (); + if (known_eq (vf, 1U)) return chunk_size; tree type = TREE_TYPE (chunk_size); @@ -4368,11 +4368,12 @@ expand_omp_simd (struct omp_region *region, struct omp_for_data *fd) if (safelen) { + poly_uint64 val; safelen = OMP_CLAUSE_SAFELEN_EXPR (safelen); - if (TREE_CODE (safelen) != INTEGER_CST) + if (!poly_int_tree_p (safelen, &val)) safelen_int = 0; - else if (tree_fits_uhwi_p (safelen) && tree_to_uhwi (safelen) < INT_MAX) - safelen_int = tree_to_uhwi (safelen); + else + safelen_int = MIN (constant_lower_bound (val), INT_MAX); if (safelen_int == 1) safelen_int = 0; } |