static void add_condition (segment_info *f, gfc_equiv *eq1, gfc_equiv *eq2) { segment_info *n; n = find_segment_info (eq2->expr->symtree->n.sym); if (n == NULL) new_condition (f, eq1, eq2); else confirm_condition (f, eq1, n, eq2); }
static void translate_common (gfc_common_head *common, gfc_symbol *var_list) { gfc_symbol *sym; segment_info *s; segment_info *common_segment; HOST_WIDE_INT offset; HOST_WIDE_INT current_offset; unsigned HOST_WIDE_INT align; bool saw_equiv; common_segment = NULL; offset = 0; current_offset = 0; align = 1; saw_equiv = false; /* Add symbols to the segment. */ for (sym = var_list; sym; sym = sym->common_next) { current_segment = common_segment; s = find_segment_info (sym); /* Symbol has already been added via an equivalence. Multiple use associations of the same common block result in equiv_built being set but no information about the symbol in the segment. */ if (s && sym->equiv_built) { /* Ensure the current location is properly aligned. */ align = TYPE_ALIGN_UNIT (s->field); current_offset = (current_offset + align - 1) &~ (align - 1); /* Verify that it ended up where we expect it. */ if (s->offset != current_offset) { gfc_error ("Equivalence for '%s' does not match ordering of " "COMMON '%s' at %L", sym->name, common->name, &common->where); } } else { /* A symbol we haven't seen before. */ s = current_segment = get_segment_info (sym, current_offset); /* Add all objects directly or indirectly equivalenced with this symbol. */ add_equivalences (&saw_equiv); if (current_segment->offset < 0) gfc_error ("The equivalence set for '%s' cause an invalid " "extension to COMMON '%s' at %L", sym->name, common->name, &common->where); if (gfc_option.flag_align_commons) offset = align_segment (&align); if (offset) { /* The required offset conflicts with previous alignment requirements. Insert padding immediately before this segment. */ if (gfc_option.warn_align_commons) { if (strcmp (common->name, BLANK_COMMON_NAME)) gfc_warning ("Padding of %d bytes required before '%s' in " "COMMON '%s' at %L; reorder elements or use " "-fno-align-commons", (int)offset, s->sym->name, common->name, &common->where); else gfc_warning ("Padding of %d bytes required before '%s' in " "COMMON at %L; reorder elements or use " "-fno-align-commons", (int)offset, s->sym->name, &common->where); } } /* Apply the offset to the new segments. */ apply_segment_offset (current_segment, offset); current_offset += offset; /* Add the new segments to the common block. */ common_segment = add_segments (common_segment, current_segment); } /* The offset of the next common variable. */ current_offset += s->length; } if (common_segment == NULL) { gfc_error ("COMMON '%s' at %L does not exist", common->name, &common->where); return; } if (common_segment->offset != 0 && gfc_option.warn_align_commons) { if (strcmp (common->name, BLANK_COMMON_NAME)) gfc_warning ("COMMON '%s' at %L requires %d bytes of padding; " "reorder elements or use -fno-align-commons", common->name, &common->where, (int)common_segment->offset); else gfc_warning ("COMMON at %L requires %d bytes of padding; " "reorder elements or use -fno-align-commons", &common->where, (int)common_segment->offset); } create_common (common, common_segment, saw_equiv); }
static void translate_common (gfc_common_head *common, gfc_symbol *var_list) { gfc_symbol *sym; segment_info *s; segment_info *common_segment; HOST_WIDE_INT offset; HOST_WIDE_INT current_offset; unsigned HOST_WIDE_INT align; unsigned HOST_WIDE_INT max_align; bool saw_equiv; common_segment = NULL; current_offset = 0; max_align = 1; saw_equiv = false; /* Add symbols to the segment. */ for (sym = var_list; sym; sym = sym->common_next) { if (sym->equiv_built) { /* Symbol has already been added via an equivalence. */ current_segment = common_segment; s = find_segment_info (sym); /* Ensure the current location is properly aligned. */ align = TYPE_ALIGN_UNIT (s->field); current_offset = (current_offset + align - 1) &~ (align - 1); /* Verify that it ended up where we expect it. */ if (s->offset != current_offset) { gfc_error ("Equivalence for '%s' does not match ordering of " "COMMON '%s' at %L", sym->name, common->name, &common->where); } } else { /* A symbol we haven't seen before. */ s = current_segment = get_segment_info (sym, current_offset); /* Add all objects directly or indirectly equivalenced with this symbol. */ add_equivalences (&saw_equiv); if (current_segment->offset < 0) gfc_error ("The equivalence set for '%s' cause an invalid " "extension to COMMON '%s' at %L", sym->name, common->name, &common->where); offset = align_segment (&align); if (offset & (max_align - 1)) { /* The required offset conflicts with previous alignment requirements. Insert padding immediately before this segment. */ gfc_warning ("Padding of %d bytes required before '%s' in " "COMMON '%s' at %L", offset, s->sym->name, common->name, &common->where); } else { /* Offset the whole common block. */ apply_segment_offset (common_segment, offset); } /* Apply the offset to the new segments. */ apply_segment_offset (current_segment, offset); current_offset += offset; if (max_align < align) max_align = align; /* Add the new segments to the common block. */ common_segment = add_segments (common_segment, current_segment); } /* The offset of the next common variable. */ current_offset += s->length; } if (common_segment->offset != 0) { gfc_warning ("COMMON '%s' at %L requires %d bytes of padding at start", common->name, &common->where, common_segment->offset); } create_common (common, common_segment, saw_equiv); }