diff options
Diffstat (limited to 'gcc-4.9/gcc/fortran/dependency.c')
| -rw-r--r-- | gcc-4.9/gcc/fortran/dependency.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/gcc-4.9/gcc/fortran/dependency.c b/gcc-4.9/gcc/fortran/dependency.c index a24a4709e..f9b975ad9 100644 --- a/gcc-4.9/gcc/fortran/dependency.c +++ b/gcc-4.9/gcc/fortran/dependency.c @@ -2023,6 +2023,7 @@ int gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse) { int n; + int m; gfc_dependency fin_dep; gfc_dependency this_dep; @@ -2072,6 +2073,8 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse) break; } + /* Index for the reverse array. */ + m = -1; for (n=0; n < lref->u.ar.dimen; n++) { /* Handle dependency when either of array reference is vector @@ -2118,38 +2121,44 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gfc_reverse *reverse) The ability to reverse or not is set by previous conditions in this dimension. If reversal is not activated, the value GFC_DEP_BACKWARD is reset to GFC_DEP_OVERLAP. */ + + /* Get the indexing right for the scalarizing loop. If this + is an element, there is no corresponding loop. */ + if (lref->u.ar.dimen_type[n] != DIMEN_ELEMENT) + m++; + if (rref->u.ar.dimen_type[n] == DIMEN_RANGE && lref->u.ar.dimen_type[n] == DIMEN_RANGE) { /* Set reverse if backward dependence and not inhibited. */ - if (reverse && reverse[n] == GFC_ENABLE_REVERSE) - reverse[n] = (this_dep == GFC_DEP_BACKWARD) ? - GFC_REVERSE_SET : reverse[n]; + if (reverse && reverse[m] == GFC_ENABLE_REVERSE) + reverse[m] = (this_dep == GFC_DEP_BACKWARD) ? + GFC_REVERSE_SET : reverse[m]; /* Set forward if forward dependence and not inhibited. */ - if (reverse && reverse[n] == GFC_ENABLE_REVERSE) - reverse[n] = (this_dep == GFC_DEP_FORWARD) ? - GFC_FORWARD_SET : reverse[n]; + if (reverse && reverse[m] == GFC_ENABLE_REVERSE) + reverse[m] = (this_dep == GFC_DEP_FORWARD) ? + GFC_FORWARD_SET : reverse[m]; /* Flag up overlap if dependence not compatible with the overall state of the expression. */ - if (reverse && reverse[n] == GFC_REVERSE_SET + if (reverse && reverse[m] == GFC_REVERSE_SET && this_dep == GFC_DEP_FORWARD) { - reverse[n] = GFC_INHIBIT_REVERSE; + reverse[m] = GFC_INHIBIT_REVERSE; this_dep = GFC_DEP_OVERLAP; } - else if (reverse && reverse[n] == GFC_FORWARD_SET + else if (reverse && reverse[m] == GFC_FORWARD_SET && this_dep == GFC_DEP_BACKWARD) { - reverse[n] = GFC_INHIBIT_REVERSE; + reverse[m] = GFC_INHIBIT_REVERSE; this_dep = GFC_DEP_OVERLAP; } /* If no intention of reversing or reversing is explicitly inhibited, convert backward dependence to overlap. */ if ((reverse == NULL && this_dep == GFC_DEP_BACKWARD) - || (reverse != NULL && reverse[n] == GFC_INHIBIT_REVERSE)) + || (reverse != NULL && reverse[m] == GFC_INHIBIT_REVERSE)) this_dep = GFC_DEP_OVERLAP; } |