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(add_insn_{before,after}): Abort if insertion point is a deleted insn. 

From-SVN: r8193
This commit is contained in:
Richard Kenner 1994-10-01 20:34:45 -04:00
parent 640667cb69
commit ba21328576
1 changed files with 8 additions and 2 deletions
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10
gcc/emit-rtl.c
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@ -2132,7 +2132,7 @@ add_insn (insn)
/* Add INSN into the doubly-linked list after insn AFTER. This and
the next should be the only functions called to insert an insn once
delay slots have been filled since only they knows how to update a
delay slots have been filled since only they know how to update a
SEQUENCE. */
void
@ -2141,6 +2141,9 @@ add_insn_after (insn, after)
{
rtx next = NEXT_INSN (after);
if (INSN_DELETED_P (after))
abort ();
NEXT_INSN (insn) = next;
PREV_INSN (insn) = after;
@ -2174,7 +2177,7 @@ add_insn_after (insn, after)
/* Add INSN into the doubly-linked list before insn BEFORE. This and
the previous should be the only functions called to insert an insn once
delay slots have been filled since only they knows how to update a
delay slots have been filled since only they know how to update a
SEQUENCE. */
void
@ -2183,6 +2186,9 @@ add_insn_before (insn, before)
{
rtx prev = PREV_INSN (before);
if (INSN_DELETED_P (before))
abort ();
PREV_INSN (insn) = prev;
NEXT_INSN (insn) = before;