[PR98096] inline-asm: Take inout operands into account for access to labels by names.

GCC splits inout operands into output and new matched input operands
during gimplfication.  Addressing operands by name or number is not
problem as the new input operands are added at the end of existing
input operands.  However it became a problem for labels in asm goto
with output reloads.  Addressing labels should take into account the
new input operands.  The patch solves the problem.

gcc/ChangeLog:

	PR inline-asm/98096
	* stmt.c (resolve_operand_name_1): Take inout operands into account
	for access to labels by names.
	* doc/extend.texi: Describe counting operands for accessing labels.

gcc/testsuite/ChangeLog:

	PR inline-asm/98096
	* gcc.c-torture/compile/pr98096.c: New.

1 files changed, 6 insertions, 2 deletions

diff --git a/gcc/stmt.c b/gcc/stmt.c
index bd836d8..f52ffaf 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -611,7 +611,7 @@ static char *
 resolve_operand_name_1 (char *p, tree outputs, tree inputs, tree labels)
 {
   char *q;
-  int op;
+  int op, op_inout;
   tree t;
 
   /* Collect the operand name.  */
@@ -624,11 +624,14 @@ resolve_operand_name_1 (char *p, tree outputs, tree inputs, tree labels)
   *q = '\0';
 
   /* Resolve the name to a number.  */
-  for (op = 0, t = outputs; t ; t = TREE_CHAIN (t), op++)
+  for (op_inout = op = 0, t = outputs; t ; t = TREE_CHAIN (t), op++)
     {
       tree name = TREE_PURPOSE (TREE_PURPOSE (t));
       if (name && strcmp (TREE_STRING_POINTER (name), p) == 0)
 	goto found;
+      tree constraint = TREE_VALUE (TREE_PURPOSE (t));
+      if (constraint && strchr (TREE_STRING_POINTER (constraint), '+') != NULL)
+        op_inout++;
     }
   for (t = inputs; t ; t = TREE_CHAIN (t), op++)
     {
@@ -636,6 +639,7 @@ resolve_operand_name_1 (char *p, tree outputs, tree inputs, tree labels)
       if (name && strcmp (TREE_STRING_POINTER (name), p) == 0)
 	goto found;
     }
+  op += op_inout;
   for (t = labels; t ; t = TREE_CHAIN (t), op++)
     {
       tree name = TREE_PURPOSE (t);