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loop.c (strength_reduce): Clear not_every_iteration when passing the NOTE_INSN_LOOP_CONT note.

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* loop.c (strength_reduce): Clear not_every_iteration when
        passing the NOTE_INSN_LOOP_CONT note.

From-SVN: r25050
This commit is contained in:
Jeffrey A Law 1999-02-05 14:38:32 +00:00 committed by Jeff Law
parent d33c2956a4
commit 5f3db57e52
2 changed files with 17 additions and 4 deletions
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3
gcc/ChangeLog
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@ -9,6 +9,9 @@ Fri Feb 5 11:49:49 1999 Benjamin Kosnik <bkoz@loony.cygnus.com>
Fri Feb 5 12:37:05 1999 Jeffrey A Law (law@cygnus.com)
* loop.c (strength_reduce): Clear not_every_iteration when
passing the NOTE_INSN_LOOP_CONT note.
* haifa-sched.c (add_dependence): Do not add a dependency on a
note.

18
gcc/loop.c
View File

@ -3824,8 +3824,13 @@ strength_reduce (scan_start, end, loop_top, insn_count,
{
/* At the virtual top of a converted loop, insns are again known to
be executed each iteration: logically, the loop begins here
even though the exit code has been duplicated. */
if (NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_VTOP && loop_depth == 0)
even though the exit code has been duplicated.
Insns are also again known to be executed each iteration at
the LOOP_CONT note. */
if ((NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_VTOP
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_CONT)
&& loop_depth == 0)
not_every_iteration = 0;
else if (NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_BEG)
loop_depth++;
@ -4381,8 +4386,13 @@ strength_reduce (scan_start, end, loop_top, insn_count,
{
/* At the virtual top of a converted loop, insns are again known to
be executed each iteration: logically, the loop begins here
even though the exit code has been duplicated. */
if (NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_VTOP && loop_depth == 0)
even though the exit code has been duplicated.
Insns are also again known to be executed each iteration at
the LOOP_CONT note. */
if ((NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_VTOP
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_CONT)
&& loop_depth == 0)
not_every_iteration = 0;
else if (NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_BEG)
loop_depth++;