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* unroll.c (copy_loop_body): Don't copy VTOP notes from copy_notes_from.

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From-SVN: r26786
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J"orn Rennecke 1999-05-05 15:47:48 +00:00 committed by Joern Rennecke
parent 9096b279c2
commit 36e9ee91ef
2 changed files with 13 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
Wed May 5 23:44:15 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* unroll.c (copy_loop_body): Don't copy VTOP notes from copy_notes_from.
Wed May 5 16:26:13 1999 Vladimir Makarov <vmakarov@tofu.to.cygnus.com>
* function.c (purge_addressof_replacements): Rename into

10
gcc/unroll.c
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@ -2193,9 +2193,17 @@ copy_loop_body (copy_start, copy_end, map, exit_label, last_iteration,
{
for (insn = copy_notes_from; insn != loop_end; insn = NEXT_INSN (insn))
{
/* VTOP notes are valid only before the loop exit test.
If placed anywhere else, loop may generate bad code.
There is no need to test for NOTE_INSN_LOOP_CONT notes
here, since COPY_NOTES_FROM will be at most one or two (for cc0)
instructions before the last insn in the loop, and if the
end test is that short, there will be a VTOP note between
the CONT note and the test. */
if (GET_CODE (insn) == NOTE
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_DELETED
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_BASIC_BLOCK)
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_BASIC_BLOCK
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_LOOP_VTOP)
emit_note (NOTE_SOURCE_FILE (insn), NOTE_LINE_NUMBER (insn));
}
}