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* unroll.c (copy_loop_body): Don't copy NOTE_INSN_LOOP_CONT.

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From-SVN: r55877
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J"orn Rennecke 2002-07-30 17:37:58 +00:00 committed by Joern Rennecke
parent 68e82b8334
commit 0a7564014a
2 changed files with 10 additions and 6 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
Tue Jul 30 11:21:44 2002 J"orn Rennecke <joern.rennecke@superh.com>
* unroll.c (copy_loop_body): Don't copy NOTE_INSN_LOOP_CONT.
2002-07-30 Kazu Hirata <kazu@cs.umass.edu>
* fold-const.c: Fix comment typos.

12
gcc/unroll.c
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@ -2258,15 +2258,15 @@ copy_loop_body (loop, copy_start, copy_end, map, exit_label, last_iteration,
{
/* 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. */
Although COPY_NOTES_FROM will be at most one or two (for cc0)
instructions before the last insn in the loop, COPY_NOTES_FROM
can be a NOTE_INSN_LOOP_CONT note if there is no VTOP note,
as in a do .. while loop. */
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_LOOP_VTOP)
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_LOOP_VTOP
&& NOTE_LINE_NUMBER (insn) != NOTE_INSN_LOOP_CONT)
emit_note (NOTE_SOURCE_FILE (insn), NOTE_LINE_NUMBER (insn));
}
}