Hi, this patch adds checks for registers availability, when
alternative/numeric name is used.
Bootstraps/passes make-check on x86-64.
Ok for trunk?
ChangeLog:
gcc/
2014-09-01 Ilya Tocar <ilya.to...@intel.com>
* varasm.c (decode_reg_name_and_count): Check availability for
registers from ADDITIONAL_REGISTER_NAMES.
---
gcc/varasm.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 9d8602b..1d6f79f 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -888,7 +888,7 @@ decode_reg_name_and_count (const char *asmspec, int *pnregs)
if (asmspec[0] != 0 && i < 0)
{
i = atoi (asmspec);
- if (i < FIRST_PSEUDO_REGISTER && i >= 0)
+ if (i < FIRST_PSEUDO_REGISTER && i >= 0 && reg_names[i][0])
return i;
else
return -2;
@@ -925,7 +925,8 @@ decode_reg_name_and_count (const char *asmspec, int *pnregs)
for (i = 0; i < (int) ARRAY_SIZE (table); i++)
if (table[i].name[0]
- && ! strcmp (asmspec, table[i].name))
+ && ! strcmp (asmspec, table[i].name)
+ && reg_names[table[i].number][0])
return table[i].number;
}
#endif /* ADDITIONAL_REGISTER_NAMES */
--
1.8.3.1
