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regmove.c: Fix various minor formatting problems.

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* regmove.c: Fix various minor formatting problems.
        (optimize_reg_copy_1): Stop search at CALL_INSNs if flag_exceptions
        is true.  Make end of basic block tests consistent through regmove.c.
        (optimize_reg_copy_2, optimize_reg_copy_3): Likewise.
        (fixup_match_2, fixup_match_1, regmove_optimize): Likewise.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>

From-SVN: r17775
This commit is contained in:
Jim Wilson 1998-02-08 11:43:54 +00:00 committed by Jeff Law
parent 40f39eb714
commit 7bf825d296
2 changed files with 113 additions and 8 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
Sun Feb 8 12:04:24 1998 Jim Wilson (wilson@cygnus.com)
Jeff Law (law@cygnus.com)
* regmove.c: Fix various minor formatting problems.
(optimize_reg_copy_1): Stop search at CALL_INSNs if flag_exceptions
is true. Make end of basic block tests consistent through regmove.c.
(optimize_reg_copy_2, optimize_reg_copy_3): Likewise.
(fixup_match_2, fixup_match_1, regmove_optimize): Likewise.
Sun Feb 8 01:49:18 1998 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* gansidecl.h: Check for a conflicting macro definition before

112
gcc/regmove.c
View File

@ -206,6 +206,14 @@ optimize_reg_copy_1 (insn, dest, src)
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it is inside
an EH region. There is no easy way to tell, so we just always break
when we see a CALL_INSN if flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
@ -380,6 +388,14 @@ optimize_reg_copy_2 (insn, dest, src)
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it is inside
an EH region. There is no easy way to tell, so we just always break
when we see a CALL_INSN if flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
@ -451,10 +467,22 @@ optimize_reg_copy_3 (insn, dest, src)
return;
for (p = PREV_INSN (insn); ! reg_set_p (src_reg, p); p = PREV_INSN (p))
{
if (GET_CODE (p) == CODE_LABEL || GET_CODE (p) == JUMP_INSN
|| (GET_CODE (p) == NOTE
&& (NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_BEG
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
return;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it is inside
an EH region. There is no easy way to tell, so we just always break
when we see a CALL_INSN if flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
return;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
if (GET_CODE (p) == JUMP_INSN)
return;
}
if (! (set = single_set (p))
|| GET_CODE (SET_SRC (set)) != MEM
@ -541,7 +569,8 @@ reg_is_remote_constant_p (reg, insn, first)
/* cse disrupts preincrement / postdecrement squences when it finds a
hard register as ultimate source, like the frame pointer. */
int fixup_match_2 (insn, dst, src, offset, regmove_dump_file)
int
fixup_match_2 (insn, dst, src, offset, regmove_dump_file)
rtx insn, dst, src, offset;
FILE *regmove_dump_file;
{
@ -567,13 +596,21 @@ int fixup_match_2 (insn, dst, src, offset, regmove_dump_file)
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it is inside
an EH region. There is no easy way to tell, so we just always break
when we see a CALL_INSN if flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
if (find_regno_note (p, REG_DEAD, REGNO (dst)))
dst_death = p;
if (! dst_death)
length++;
if (find_regno_note (p, REG_DEAD, REGNO (dst)))
dst_death = p;
if (! dst_death)
length++;
pset = single_set (p);
if (pset && SET_DEST (pset) == dst
@ -978,6 +1015,16 @@ regmove_optimize (f, nregs, regmove_dump_file)
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without
updating the register lifetime info
(REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if
it is inside an EH region. There is no easy way to tell,
so we just always break when we see a CALL_INSN if
flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
@ -1245,6 +1292,14 @@ fixup_match_1 (insn, set, src, src_subreg, dst, backward, operand_number,
|| NOTE_LINE_NUMBER (p) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it is
inside an EH region. There is no easy way to tell, so we just
always break when we see a CALL_INSN if flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (p)) != 'i')
continue;
@ -1281,6 +1336,20 @@ fixup_match_1 (insn, set, src, src_subreg, dst, backward, operand_number,
q = 0;
break;
}
/* ??? We can't scan past the end of a basic block without
updating the register lifetime info
(REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if
it is inside an EH region. There is no easy way to tell,
so we just always break when we see a CALL_INSN if
flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
{
q = 0;
break;
}
if (GET_RTX_CLASS (GET_CODE (q)) != 'i')
continue;
if (reg_overlap_mentioned_p (src, PATTERN (q))
@ -1434,11 +1503,28 @@ fixup_match_1 (insn, set, src, src_subreg, dst, backward, operand_number,
{
for (q = PREV_INSN (insn); q; q = PREV_INSN(q))
{
if (GET_CODE (q) == JUMP_INSN)
if (GET_CODE (q) == CODE_LABEL || GET_CODE (q) == JUMP_INSN
|| (GET_CODE (q) == NOTE
&& (NOTE_LINE_NUMBER (q) == NOTE_INSN_LOOP_BEG
|| NOTE_LINE_NUMBER (q) == NOTE_INSN_LOOP_END)))
{
q = 0;
break;
}
/* ??? We can't scan past the end of a basic block without
updating the register lifetime info
(REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if
it is inside an EH region. There is no easy way to tell,
so we just always break when we see a CALL_INSN if
flag_exceptions is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
{
q = 0;
break;
}
if (GET_RTX_CLASS (GET_CODE (q)) != 'i')
continue;
s_length2++;
@ -1510,6 +1596,16 @@ fixup_match_1 (insn, set, src, src_subreg, dst, backward, operand_number,
&& (NOTE_LINE_NUMBER (q) == NOTE_INSN_LOOP_BEG
|| NOTE_LINE_NUMBER (q) == NOTE_INSN_LOOP_END)))
break;
/* ??? We can't scan past the end of a basic block without updating
the register lifetime info (REG_DEAD/basic_block_live_at_start).
A CALL_INSN might be the last insn of a basic block, if it
is inside an EH region. There is no easy way to tell so we
just always break when we see a CALL_INSN if flag_exceptions
is nonzero. */
if (flag_exceptions && GET_CODE (p) == CALL_INSN)
break;
if (GET_RTX_CLASS (GET_CODE (q)) != 'i')
continue;
if (src != inc_dest && (reg_overlap_mentioned_p (src, PATTERN (q))