diff options
Diffstat (limited to 'gcc/fortran/dependency.c')
| -rw-r--r-- | gcc/fortran/dependency.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/gcc/fortran/dependency.c b/gcc/fortran/dependency.c index 5f74c34ac5c..eb07e7c5db6 100644 --- a/gcc/fortran/dependency.c +++ b/gcc/fortran/dependency.c @@ -1186,12 +1186,16 @@ gfc_check_element_vs_element (gfc_ref *lref, gfc_ref *rref, int n) /* Determine if an array ref, usually an array section specifies the - entire array. */ + entire array. In addition, if the second, pointer argument is + provided, the function will return true if the reference is + contiguous; eg. (:, 1) gives true but (1,:) gives false. */ bool -gfc_full_array_ref_p (gfc_ref *ref) +gfc_full_array_ref_p (gfc_ref *ref, bool *contiguous) { int i; + bool lbound_OK = true; + bool ubound_OK = true; if (ref->type != REF_ARRAY) return false; @@ -1209,6 +1213,10 @@ gfc_full_array_ref_p (gfc_ref *ref) the correct element. */ if (ref->u.ar.dimen_type[i] == DIMEN_ELEMENT) { + /* This is a contiguous reference. */ + if (contiguous) + *contiguous = (i + 1 == ref->u.ar.dimen); + if (!ref->u.ar.as || !ref->u.ar.as->lower[i] || !ref->u.ar.as->upper[i] @@ -1228,17 +1236,24 @@ gfc_full_array_ref_p (gfc_ref *ref) || !ref->u.ar.as->lower[i] || gfc_dep_compare_expr (ref->u.ar.start[i], ref->u.ar.as->lower[i]))) - return false; + lbound_OK = false; /* Check the upper bound. */ if (ref->u.ar.end[i] && (!ref->u.ar.as || !ref->u.ar.as->upper[i] || gfc_dep_compare_expr (ref->u.ar.end[i], ref->u.ar.as->upper[i]))) - return false; + ubound_OK = false; /* Check the stride. */ if (ref->u.ar.stride[i] && !gfc_expr_is_one (ref->u.ar.stride[i], 0)) return false; + + /* This is a contiguous reference. */ + if (contiguous) + *contiguous = (i + 1 == ref->u.ar.dimen); + + if (!lbound_OK || !ubound_OK) + return false; } return true; } @@ -1356,11 +1371,11 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref) if (lref->u.ar.dimen != rref->u.ar.dimen) { if (lref->u.ar.type == AR_FULL) - fin_dep = gfc_full_array_ref_p (rref) ? GFC_DEP_EQUAL - : GFC_DEP_OVERLAP; + fin_dep = gfc_full_array_ref_p (rref, NULL) ? GFC_DEP_EQUAL + : GFC_DEP_OVERLAP; else if (rref->u.ar.type == AR_FULL) - fin_dep = gfc_full_array_ref_p (lref) ? GFC_DEP_EQUAL - : GFC_DEP_OVERLAP; + fin_dep = gfc_full_array_ref_p (lref, NULL) ? GFC_DEP_EQUAL + : GFC_DEP_OVERLAP; else return 1; break; |
