handle undefined extern vars in output_in_order
* cgraphunit.c (cgraph_order_sort_kind): New entry ORDER_VAR_UNDEF. (output_in_order): Loop over undefined variables too. Output them via assemble_undefined_decl. Skip variables that correspond to hard registers or have value-exprs. * varpool.c (symbol_table::output_variables): Handle undefined variables together with defined ones. From-SVN: r238371
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@ -1,3 +1,12 @@
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2016-07-15 Alexander Monakov <amonakov@ispras.ru>
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* cgraphunit.c (cgraph_order_sort_kind): New entry ORDER_VAR_UNDEF.
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(output_in_order): Loop over undefined variables too. Output them
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via assemble_undefined_decl. Skip variables that correspond to hard
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registers or have value-exprs.
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* varpool.c (symbol_table::output_variables): Handle undefined
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variables together with defined ones.
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2016-07-15 Richard Biener <rguenther@suse.de>
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* tree-ssa-pre.c (get_representative_for): Make sure to return
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@ -2141,6 +2141,7 @@ enum cgraph_order_sort_kind
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ORDER_UNDEFINED = 0,
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ORDER_FUNCTION,
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ORDER_VAR,
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ORDER_VAR_UNDEF,
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ORDER_ASM
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};
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@ -2187,16 +2188,20 @@ output_in_order (bool no_reorder)
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}
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}
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FOR_EACH_DEFINED_VARIABLE (pv)
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if (!DECL_EXTERNAL (pv->decl))
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{
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if (no_reorder && !pv->no_reorder)
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continue;
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i = pv->order;
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gcc_assert (nodes[i].kind == ORDER_UNDEFINED);
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nodes[i].kind = ORDER_VAR;
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nodes[i].u.v = pv;
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}
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/* There is a similar loop in symbol_table::output_variables.
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Please keep them in sync. */
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FOR_EACH_VARIABLE (pv)
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{
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if (no_reorder && !pv->no_reorder)
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continue;
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if (DECL_HARD_REGISTER (pv->decl)
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|| DECL_HAS_VALUE_EXPR_P (pv->decl))
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continue;
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i = pv->order;
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gcc_assert (nodes[i].kind == ORDER_UNDEFINED);
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nodes[i].kind = pv->definition ? ORDER_VAR : ORDER_VAR_UNDEF;
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nodes[i].u.v = pv;
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}
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for (pa = symtab->first_asm_symbol (); pa; pa = pa->next)
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{
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@ -2222,16 +2227,13 @@ output_in_order (bool no_reorder)
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break;
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case ORDER_VAR:
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#ifdef ACCEL_COMPILER
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/* Do not assemble "omp declare target link" vars. */
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if (DECL_HAS_VALUE_EXPR_P (nodes[i].u.v->decl)
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&& lookup_attribute ("omp declare target link",
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DECL_ATTRIBUTES (nodes[i].u.v->decl)))
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break;
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#endif
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nodes[i].u.v->assemble_decl ();
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break;
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case ORDER_VAR_UNDEF:
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assemble_undefined_decl (nodes[i].u.v->decl);
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break;
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case ORDER_ASM:
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assemble_asm (nodes[i].u.a->asm_str);
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break;
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@ -733,11 +733,6 @@ symbol_table::output_variables (void)
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timevar_push (TV_VAROUT);
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FOR_EACH_VARIABLE (node)
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if (!node->definition
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&& !DECL_HAS_VALUE_EXPR_P (node->decl)
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&& !DECL_HARD_REGISTER (node->decl))
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assemble_undefined_decl (node->decl);
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FOR_EACH_DEFINED_VARIABLE (node)
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{
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/* Handled in output_in_order. */
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@ -747,20 +742,19 @@ symbol_table::output_variables (void)
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node->finalize_named_section_flags ();
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}
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FOR_EACH_DEFINED_VARIABLE (node)
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/* There is a similar loop in output_in_order. Please keep them in sync. */
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FOR_EACH_VARIABLE (node)
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{
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/* Handled in output_in_order. */
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if (node->no_reorder)
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continue;
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#ifdef ACCEL_COMPILER
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/* Do not assemble "omp declare target link" vars. */
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if (DECL_HAS_VALUE_EXPR_P (node->decl)
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&& lookup_attribute ("omp declare target link",
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DECL_ATTRIBUTES (node->decl)))
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if (DECL_HARD_REGISTER (node->decl)
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|| DECL_HAS_VALUE_EXPR_P (node->decl))
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continue;
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#endif
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if (node->assemble_decl ())
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changed = true;
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if (node->definition)
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changed |= node->assemble_decl ();
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else
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assemble_undefined_decl (node->decl);
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}
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timevar_pop (TV_VAROUT);
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return changed;
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