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recog.c (peephole2_optimize): Likewise. 

* recog.c (peephole2_optimize): Likewise.  Handle EH_REGION;
        copy over CALL_INSN_FUNCTION_USAGE.

From-SVN: r45693
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Richard Henderson 2001-09-19 11:32:21 -07:00 committed by Richard Henderson
parent bb7fd9624b
commit 33593de731
2 changed files with 65 additions and 0 deletions
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2
gcc/ChangeLog
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@ -4,6 +4,8 @@
* emit-rtl.c (try_split): Copy NORETURN, SETJMP, ALWAYS_RETURN
and NON_LOCAL_GOTO notes.
* recog.c (peephole2_optimize): Likewise. Handle EH_REGION;
copy over CALL_INSN_FUNCTION_USAGE.
2001-09-18 Catherine Moore <clm@redhat.com>

63
gcc/recog.c
View File

@ -3059,6 +3059,69 @@ peephole2_optimize (dump_file)
try = peephole2_insns (PATTERN (insn), insn, &match_len);
if (try != NULL)
{
/* If we are splitting a CALL_INSN, look for the CALL_INSN
in SEQ and copy our CALL_INSN_FUNCTION_USAGE and other
cfg-related call notes. */
for (i = 0; i <= match_len; ++i)
{
int j, k;
rtx old_insn, new_insn, note;
j = i + peep2_current;
if (j >= MAX_INSNS_PER_PEEP2 + 1)
j -= MAX_INSNS_PER_PEEP2 + 1;
old_insn = peep2_insn_data[j].insn;
if (GET_CODE (old_insn) != CALL_INSN)
continue;
new_insn = NULL_RTX;
if (GET_CODE (try) == SEQUENCE)
for (k = XVECLEN (try, 0) - 1; k >= 0; k--)
{
rtx x = XVECEXP (try, 0, k);
if (GET_CODE (x) == CALL_INSN)
{
new_insn = x;
break;
}
}
else if (GET_CODE (try) == CALL_INSN)
new_insn = try;
if (! new_insn)
abort ();
CALL_INSN_FUNCTION_USAGE (new_insn)
= CALL_INSN_FUNCTION_USAGE (old_insn);
for (note = REG_NOTES (old_insn);
note;
note = XEXP (note, 1))
switch (REG_NOTE_KIND (note))
{
case REG_EH_REGION:
case REG_NORETURN:
case REG_SETJMP:
case REG_ALWAYS_RETURN:
REG_NOTES (new_insn)
= gen_rtx_EXPR_LIST (REG_NOTE_KIND (note),
XEXP (note, 0),
REG_NOTES (new_insn));
break;
}
/* Croak if there is another call in the sequence. */
while (++i <= match_len)
{
j = i + peep2_current;
if (j >= MAX_INSNS_PER_PEEP2 + 1)
j -= MAX_INSNS_PER_PEEP2 + 1;
old_insn = peep2_insn_data[j].insn;
if (GET_CODE (old_insn) == CALL_INSN)
abort ();
}
break;
}
i = match_len + peep2_current;
if (i >= MAX_INSNS_PER_PEEP2 + 1)
i -= MAX_INSNS_PER_PEEP2 + 1;