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(sched_analyze_insn): Parameter loop_note type changed to rtx, and name changed to loop_notes. 

(sched_analyze_insn): Parameter loop_note type changed
to rtx, and name changed to loop_notes.  Code adding it to
REG_NOTES modified to account for type change.
(sched_analyze): Variable loop_note type changed to rtx, and name
changed to loop_notes.  Store LOOP_* REG_DEAD notes in it instead
of LOOP_* NOTE_LINE_NUMBER.
(schedule_block): Pass last not insn to emit_note_before call.

From-SVN: r8099
This commit is contained in:
Jim Wilson 1994-09-20 12:57:18 -07:00
parent b840bfb0a2
commit 4480e13f5e
1 changed files with 18 additions and 13 deletions
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31
gcc/sched.c
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@ -315,7 +315,7 @@ static void add_insn_mem_dependence PROTO((rtx *, rtx *, rtx, rtx));
static void flush_pending_lists PROTO((rtx));
static void sched_analyze_1 PROTO((rtx, rtx));
static void sched_analyze_2 PROTO((rtx, rtx));
static void sched_analyze_insn PROTO((rtx, rtx, int));
static void sched_analyze_insn PROTO((rtx, rtx, rtx));
static int sched_analyze PROTO((rtx, rtx));
static void sched_note_set PROTO((int, rtx, int));
static int rank_for_schedule PROTO((rtx *, rtx *));
@ -2013,9 +2013,9 @@ sched_analyze_2 (x, insn)
/* Analyze an INSN with pattern X to find all dependencies. */
static void
sched_analyze_insn (x, insn, loop_note)
sched_analyze_insn (x, insn, loop_notes)
rtx x, insn;
int loop_note;
rtx loop_notes;
{
register RTX_CODE code = GET_CODE (x);
rtx link;
@ -2054,9 +2054,10 @@ sched_analyze_insn (x, insn, loop_note)
Otherwise, the reg_n_refs info (which depends on loop_depth) would
become incorrect. */
if (loop_note)
if (loop_notes)
{
int max_reg = max_reg_num ();
rtx link;
for (i = 0; i < max_reg; i++)
{
@ -2071,8 +2072,11 @@ sched_analyze_insn (x, insn, loop_note)
flush_pending_lists (insn);
REG_NOTES (insn) = gen_rtx (EXPR_LIST, REG_DEAD,
GEN_INT (loop_note), REG_NOTES (insn));
link = loop_notes;
while (XEXP (link, 1))
link = XEXP (link, 1);
XEXP (link, 1) = REG_NOTES (insn);
REG_NOTES (insn) = loop_notes;
}
/* After reload, it is possible for an instruction to have a REG_DEAD note
@ -2163,7 +2167,7 @@ sched_analyze (head, tail)
register int n_insns = 0;
register rtx u;
register int luid = 0;
int loop_note = 0;
rtx loop_notes = 0;
for (insn = head; ; insn = NEXT_INSN (insn))
{
@ -2171,8 +2175,8 @@ sched_analyze (head, tail)
if (GET_CODE (insn) == INSN || GET_CODE (insn) == JUMP_INSN)
{
sched_analyze_insn (PATTERN (insn), insn, loop_note);
loop_note = 0;
sched_analyze_insn (PATTERN (insn), insn, loop_notes);
loop_notes = 0;
n_insns += 1;
}
else if (GET_CODE (insn) == CALL_INSN)
@ -2238,8 +2242,8 @@ sched_analyze (head, tail)
}
LOG_LINKS (sched_before_next_call) = 0;
sched_analyze_insn (PATTERN (insn), insn, loop_note);
loop_note = 0;
sched_analyze_insn (PATTERN (insn), insn, loop_notes);
loop_notes = 0;
/* We don't need to flush memory for a function call which does
not involve memory. */
@ -2259,7 +2263,8 @@ sched_analyze (head, tail)
else if (GET_CODE (insn) == NOTE
&& (NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_BEG
|| NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_END))
loop_note = NOTE_LINE_NUMBER (insn);
loop_notes = gen_rtx (EXPR_LIST, REG_DEAD,
GEN_INT (NOTE_LINE_NUMBER (insn)), loop_notes);
if (insn == tail)
return n_insns;
@ -3864,7 +3869,7 @@ schedule_block (b, file)
if (INTVAL (XEXP (note, 0)) == NOTE_INSN_SETJMP)
emit_note_after (INTVAL (XEXP (note, 0)), insn);
else
last = emit_note_before (INTVAL (XEXP (note, 0)), insn);
last = emit_note_before (INTVAL (XEXP (note, 0)), last);
remove_note (insn, note);
}
}