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unroll.c (final_reg_note_copy): Avoid crash on REG_LABEL note referencing outside. 

* unroll.c (final_reg_note_copy): Avoid crash on REG_LABEL note
	referencing outside.

From-SVN: r48803
This commit is contained in:
Jan Hubicka 2002-01-12 18:02:43 +01:00 committed by Jan Hubicka
parent a426c92e8f
commit 9d5608608c
2 changed files with 14 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Sat Jan 12 17:38:11 CET 2002 Jan Hubicka <jh@suse.cz>
* unroll.c (final_reg_note_copy): Avoid crash on REG_LABEL note
referencing outside.
Sat Jan 12 08:54:51 2002 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* diagnostic.c (warn_deprecated_use): Rework to lower indentation.

13
gcc/unroll.c
View File

@ -1741,11 +1741,16 @@ final_reg_note_copy (notesp, map)
{
rtx insn = map->insn_map[INSN_UID (XEXP (note, 0))];
/* If we failed to remap the note, something is awry. */
/* If we failed to remap the note, something is awry.
Allow REG_LABEL as it may reference label outside
the unrolled loop. */
if (!insn)
abort ();
XEXP (note, 0) = insn;
{
if (REG_NOTE_KIND (note) != REG_LABEL)
abort ();
}
else
XEXP (note, 0) = insn;
}
}