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integrate.c (copy_insn_list): handle NOTE_INSN_DELETED_LABEL, as if it were CODE_LABEL.

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* integrate.c (copy_insn_list): handle
	NOTE_INSN_DELETED_LABEL, as if it were CODE_LABEL.
	(copy_rtx_and_substitute): Likewise; behave to NOTE_INSN_DELETED_LABEL
	identically as to CODE_LABEL.

	* fold-const (fold): Convert A/B/C to A/(B*C) and
	A/(B/C) to (A/B)*C

	* except.c (connect_post_landing_pads): Delete the RESX insns.

From-SVN: r44193
This commit is contained in:
Jan Hubicka 2001-07-20 13:30:13 +02:00 committed by Jan Hubicka
parent 08f66b0485
commit bc8d3f9122
4 changed files with 45 additions and 9 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
Fri Jul 20 13:24:16 CEST 2001 Jan Hubicka <jh@suse.cz>
* integrate.c (copy_insn_list): handle
NOTE_INSN_DELETED_LABEL, as if it were CODE_LABEL.
(copy_rtx_and_substitute): Likewise; behave to NOTE_INSN_DELETED_LABEL
identically as to CODE_LABEL.
* fold-const (fold): Convert A/B/C to A/(B*C) and
A/(B/C) to (A/B)*C
* except.c (connect_post_landing_pads): Delete the RESX insns.
2001-07-20 Aldy Hernandez <aldyh@redhat.com>
* config/mips/mips.h (ISA_HAS_NMADD_NMSUB): New macro.

3
gcc/except.c
View File

@ -1846,8 +1846,7 @@ connect_post_landing_pads ()
seq = get_insns ();
end_sequence ();
emit_insns_before (seq, region->resume);
/* Leave the RESX to be deleted by flow. */
flow_delete_insn (region->resume);
}
}

17
gcc/fold-const.c
View File

@ -5866,6 +5866,23 @@ fold (expr)
}
}
}
/* Convert A/B/C to A/(B*C). */
if (flag_unsafe_math_optimizations
&& TREE_CODE (arg0) == RDIV_EXPR)
{
return fold (build (RDIV_EXPR, type, TREE_OPERAND (arg0, 0),
build (MULT_EXPR, type, TREE_OPERAND (arg0, 1),
arg1)));
}
/* Convert A/(B/C) to (A/B)*C. */
if (flag_unsafe_math_optimizations
&& TREE_CODE (arg1) == RDIV_EXPR)
{
return fold (build (MULT_EXPR, type,
build (RDIV_EXPR, type, arg0,
TREE_OPERAND (arg1, 0)),
TREE_OPERAND (arg1, 1)));
}
goto binary;
case TRUNC_DIV_EXPR:

22
gcc/integrate.c
View File

@ -1555,6 +1555,14 @@ copy_insn_list (insns, map, static_chain_value)
break;
case NOTE:
if (NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL)
{
copy = emit_label (get_label_from_map (map,
CODE_LABEL_NUMBER (insn)));
map->const_age++;
break;
}
/* NOTE_INSN_FUNCTION_END and NOTE_INSN_FUNCTION_BEG are
discarded because it is important to have only one of
each in the current function.
@ -1992,18 +2000,18 @@ copy_rtx_and_substitute (orig, map, for_lhs)
copy = SUBREG_REG (copy);
return gen_rtx_fmt_e (code, VOIDmode, copy);
/* We need to handle "deleted" labels that appear in the DECL_RTL
of a LABEL_DECL. */
case NOTE:
if (NOTE_LINE_NUMBER (orig) != NOTE_INSN_DELETED_LABEL)
break;
/* ... FALLTHRU ... */
case CODE_LABEL:
LABEL_PRESERVE_P (get_label_from_map (map, CODE_LABEL_NUMBER (orig)))
= LABEL_PRESERVE_P (orig);
return get_label_from_map (map, CODE_LABEL_NUMBER (orig));
/* We need to handle "deleted" labels that appear in the DECL_RTL
of a LABEL_DECL. */
case NOTE:
if (NOTE_LINE_NUMBER (orig) == NOTE_INSN_DELETED_LABEL)
return map->insn_map[INSN_UID (orig)];
break;
case LABEL_REF:
copy
= gen_rtx_LABEL_REF