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genrecog.c (write_subroutine): Careful for null trees.

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* genrecog.c (write_subroutine): Careful for null trees.
        (process_tree): Don't elide empty functions.

From-SVN: r29948
This commit is contained in:
Richard Henderson 1999-10-13 10:22:40 -07:00 committed by Richard Henderson
parent 5c371bd09c
commit e8f9b13a30
2 changed files with 19 additions and 11 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Wed Oct 13 10:20:58 1999 Richard Henderson <rth@cygnus.com>
* genrecog.c (write_subroutine): Careful for null trees.
(process_tree): Don't elide empty functions.
Wed Oct 13 10:07:54 1999 Richard Henderson <rth@cygnus.com>
* Makefile.in (genrtl.o): Depend on ggc.h.

25
gcc/genrecog.c
View File

@ -1859,7 +1859,7 @@ peephole2%s (x0, insn, _plast_insn)\n\
rtx *_plast_insn ATTRIBUTE_UNUSED;\n"
};
int subfunction = head->first->subroutine_number;
int subfunction = head->first ? head->first->subroutine_number : 0;
const char *s_or_e;
char extension[32];
int i;
@ -1884,7 +1884,10 @@ peephole2%s (x0, insn, _plast_insn)\n\
printf (" register rtx _last_insn = insn;\n");
printf (" %s tem ATTRIBUTE_UNUSED;\n", IS_SPLIT (type) ? "rtx" : "int");
write_tree (head, "", type, 1);
if (head->first)
write_tree (head, "", type, 1);
else
printf (" goto ret0;\n");
if (type == PEEPHOLE2)
printf (" ret1:\n *_plast_insn = _last_insn;\n return tem;\n");
@ -2128,17 +2131,17 @@ process_tree (head, subroutine_type)
struct decision_head *head;
enum routine_type subroutine_type;
{
if (head->first == NULL)
return;
if (head->first != NULL)
{
factor_tests (head);
simplify_tests (head);
factor_tests (head);
simplify_tests (head);
next_subroutine_number = 0;
break_out_subroutines (head, 1);
find_afterward (head, NULL);
next_subroutine_number = 0;
break_out_subroutines (head, 1);
find_afterward (head, NULL);
write_subroutines (head, subroutine_type);
write_subroutines (head, subroutine_type);
}
write_subroutine (head, subroutine_type);
}