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(regno_last_note_uid): New vector. 

(reg_scan): Initialize regno_last_note_uid.
Call reg_scan_mark_refs for the notes.  Pass its new arg.
(reg_scan_mark_refs): New arg NOTE_FLAG.  Pass it recursively.
Set regno_last_note_uid.

From-SVN: r5729
This commit is contained in:
Richard Stallman 1993-10-11 07:02:42 +00:00
parent 2cb547d84f
commit 1ebecb64eb
1 changed files with 20 additions and 5 deletions
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25
gcc/regclass.c
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@ -1482,6 +1482,11 @@ int *regno_first_uid;
int *regno_last_uid;
/* Indexed by pseudo register number, gives uid of last insn using the reg
or mentioning it in a note (as of the time reg_scan is called). */
int *regno_last_note_uid;
/* Record the number of registers we used when we allocated the above two
tables. If we are called again with more than this, we must re-allocate
the tables. */
@ -1512,12 +1517,15 @@ reg_scan (f, nregs, repeat)
= (int *) oballoc (highest_regno_in_uid_map * sizeof (int));
regno_last_uid
= (int *) oballoc (highest_regno_in_uid_map * sizeof (int));
regno_last_note_uid
= (int *) oballoc (highest_regno_in_uid_map * sizeof (int));
reg_n_sets
= (short *) oballoc (highest_regno_in_uid_map * sizeof (short));
}
bzero (regno_first_uid, highest_regno_in_uid_map * sizeof (int));
bzero (regno_last_uid, highest_regno_in_uid_map * sizeof (int));
bzero (regno_last_note_uid, highest_regno_in_uid_map * sizeof (int));
bzero (reg_n_sets, highest_regno_in_uid_map * sizeof (short));
max_parallel = 3;
@ -1530,14 +1538,19 @@ reg_scan (f, nregs, repeat)
if (GET_CODE (PATTERN (insn)) == PARALLEL
&& XVECLEN (PATTERN (insn), 0) > max_parallel)
max_parallel = XVECLEN (PATTERN (insn), 0);
reg_scan_mark_refs (PATTERN (insn), insn);
reg_scan_mark_refs (PATTERN (insn), insn, 0);
reg_scan_mark_refs (REG_NOTES (insn), insn, 1);
}
}
/* X is the expression to scan. INSN is the insn it appears in.
NOTE_FLAG is nonzero if X is from INSN's notes rather than its body. */
void
reg_scan_mark_refs (x, insn)
reg_scan_mark_refs (x, insn, note_flag)
rtx x;
rtx insn;
int note_flag;
{
register enum rtx_code code = GET_CODE (x);
register rtx dest;
@ -1560,7 +1573,9 @@ reg_scan_mark_refs (x, insn)
{
register int regno = REGNO (x);
regno_last_uid[regno] = INSN_UID (insn);
regno_last_note_uid[regno] = INSN_UID (insn);
if (!note_flag)
regno_last_uid[regno] = INSN_UID (insn);
if (regno_first_uid[regno] == 0)
regno_first_uid[regno] = INSN_UID (insn);
}
@ -1627,12 +1642,12 @@ reg_scan_mark_refs (x, insn)
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
reg_scan_mark_refs (XEXP (x, i), insn);
reg_scan_mark_refs (XEXP (x, i), insn, note_flag);
else if (fmt[i] == 'E' && XVEC (x, i) != 0)
{
register int j;
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
reg_scan_mark_refs (XVECEXP (x, i, j), insn);
reg_scan_mark_refs (XVECEXP (x, i, j), insn, note_flag);
}
}
}