diff -rup binutils.orig/gas/symbols.c binutils-2.38/gas/symbols.c
--- binutils.orig/gas/symbols.c 2022-03-09 11:43:34.706610216 +0000
+++ binutils-2.38/gas/symbols.c 2022-03-09 11:45:57.540686508 +0000
@@ -61,8 +61,10 @@ struct symbol_flags
/* Whether the symbol can be re-defined. */
unsigned int volatil : 1;
- /* Whether the symbol is a forward reference. */
+ /* Whether the symbol is a forward reference, and whether such has
+ been determined. */
unsigned int forward_ref : 1;
+ unsigned int forward_resolved : 1;
/* This is set if the symbol is defined in an MRI common section.
We handle such sections as single common symbols, so symbols
@@ -202,7 +204,7 @@ static void *
symbol_entry_find (htab_t table, const char *name)
{
hashval_t hash = htab_hash_string (name);
- symbol_entry_t needle = { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+ symbol_entry_t needle = { { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
hash, name, 0, 0, 0 } };
return htab_find_with_hash (table, &needle, hash);
}
@@ -784,7 +786,9 @@ symbol_clone (symbolS *orgsymP, int repl
symbolS *
symbol_clone_if_forward_ref (symbolS *symbolP, int is_forward)
{
- if (symbolP && !symbolP->flags.local_symbol)
+ if (symbolP
+ && !symbolP->flags.local_symbol
+ && !symbolP->flags.forward_resolved)
{
symbolS *orig_add_symbol = symbolP->x->value.X_add_symbol;
symbolS *orig_op_symbol = symbolP->x->value.X_op_symbol;
@@ -837,6 +841,7 @@ symbol_clone_if_forward_ref (symbolS *sy
symbolP->x->value.X_add_symbol = add_symbol;
symbolP->x->value.X_op_symbol = op_symbol;
+ symbolP->flags.forward_resolved = 1;
}
return symbolP;
diff -rup binutils.orig/gas/testsuite/gas/elf/dwarf2-18.d binutils-2.38/gas/testsuite/gas/elf/dwarf2-18.d
--- binutils.orig/gas/testsuite/gas/elf/dwarf2-18.d 2022-03-09 11:43:34.487611632 +0000
+++ binutils-2.38/gas/testsuite/gas/elf/dwarf2-18.d 2022-03-09 11:48:03.298873228 +0000
@@ -2,9 +2,8 @@
#readelf: -x.rodata -wL
#name: DWARF2 18
# The am33 cr16 crx ft32 mn10 msp430 nds32 and rl78 targets do not evaluate the subtraction of symbols at assembly time.
-# The mep targets turns some view computations into complex relocations.
# The riscv targets do not support the subtraction of symbols.
-#xfail: am3*-* cr16-* crx-* ft32*-* mep-* mn10*-* msp430-* nds32*-* riscv*-* rl78-*
+#xfail: am3*-* cr16-* crx-* ft32*-* mn10*-* msp430-* nds32*-* riscv*-* rl78-*
Hex dump of section '\.rodata':
0x00000000 0100 *.*
--- binutils.orig/gas/dwarf2dbg.c 2022-03-10 09:13:18.516639363 +0000
+++ binutils-2.38/gas/dwarf2dbg.c 2022-03-10 12:45:25.191933733 +0000
@@ -402,18 +402,27 @@ set_or_check_view (struct line_entry *e,
if (viewx.X_op != O_constant || viewx.X_add_number)
{
expressionS incv;
+ expressionS *p_view;
if (!p->loc.u.view)
- {
- p->loc.u.view = symbol_temp_make ();
- gas_assert (!S_IS_DEFINED (p->loc.u.view));
- }
+ p->loc.u.view = symbol_temp_make ();
memset (&incv, 0, sizeof (incv));
incv.X_unsigned = 1;
incv.X_op = O_symbol;
incv.X_add_symbol = p->loc.u.view;
incv.X_add_number = 1;
+ p_view = symbol_get_value_expression (p->loc.u.view);
+ if (p_view->X_op == O_constant || p_view->X_op == O_symbol)
+ {
+ /* If we can, constant fold increments so that a chain of
+ expressions v + 1 + 1 ... + 1 is not created.
+ resolve_expression isn't ideal for this purpose. The
+ base v might not be resolvable until later. */
+ incv.X_op = p_view->X_op;
+ incv.X_add_symbol = p_view->X_add_symbol;
+ incv.X_add_number = p_view->X_add_number + 1;
+ }
if (viewx.X_op == O_constant)
{