Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
#include "config.h"
#include "toplev.h"
/* Include insn-config.h before expr.h so that HAVE_conditional_move
- is properly defined. */
+ is properly defined. */
#include "insn-config.h"
#include "rtl.h"
#include "tree.h"
#include "function.h"
#include "except.h"
#include "expr.h"
+#include "optabs.h"
+#include "libfuncs.h"
#include "recog.h"
#include "reload.h"
#include "ggc.h"
static enum insn_code can_float_p PARAMS ((enum machine_mode, enum machine_mode,
int));
static rtx ftruncify PARAMS ((rtx));
-static optab init_optab PARAMS ((enum rtx_code));
+static optab new_optab PARAMS ((void));
+static inline optab init_optab PARAMS ((enum rtx_code));
+static inline optab init_optabv PARAMS ((enum rtx_code));
static void init_libfuncs PARAMS ((optab, int, int, const char *, int));
static void init_integral_libfuncs PARAMS ((optab, const char *, int));
static void init_floating_libfuncs PARAMS ((optab, const char *, int));
return 1;
}
\f
+/* Wrapper around expand_binop which takes an rtx code to specify
+ the operation to perform, not an optab pointer. All other
+ arguments are the same. */
+rtx
+expand_simple_binop (mode, code, op0, op1, target, unsignedp, methods)
+ enum machine_mode mode;
+ enum rtx_code code;
+ rtx op0, op1;
+ rtx target;
+ int unsignedp;
+ enum optab_methods methods;
+{
+ optab binop = code_to_optab [(int) code];
+ if (binop == 0)
+ abort ();
+
+ return expand_binop (mode, binop, op0, op1, target, unsignedp, methods);
+}
+
/* Generate code to perform an operation specified by BINOPTAB
on operands OP0 and OP1, with result having machine-mode MODE.
? OPTAB_WIDEN : methods);
enum mode_class class;
enum machine_mode wider_mode;
- register rtx temp;
+ rtx temp;
int commutative_op = 0;
int shift_op = (binoptab->code == ASHIFT
|| binoptab->code == ASHIFTRT
if (GET_MODE (op0) != mode0 && GET_MODE (op1) != mode1
&& GET_MODE (op0) == mode1 && GET_MODE (op1) == mode0)
{
- register rtx tmp;
+ rtx tmp;
tmp = op0; op0 = op1; op1 = tmp;
tmp = xop0; xop0 = xop1; xop1 = tmp;
/* For certain integer operations, we need not actually extend
the narrow operands, as long as we will truncate
- the results to the same narrowness. */
+ the results to the same narrowness. */
if ((binoptab == ior_optab || binoptab == and_optab
|| binoptab == xor_optab
&& binoptab->handlers[(int) word_mode].insn_code != CODE_FOR_nothing)
{
unsigned int i;
- rtx carry_tmp = gen_reg_rtx (word_mode);
optab otheroptab = binoptab == add_optab ? sub_optab : add_optab;
unsigned int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
rtx carry_in = NULL_RTX, carry_out = NULL_RTX;
if (i > 0)
{
+ rtx newx;
+
/* Add/subtract previous carry to main result. */
- x = expand_binop (word_mode,
- normalizep == 1 ? binoptab : otheroptab,
- x, carry_in,
- target_piece, 1, next_methods);
- if (x == 0)
- break;
- else if (target_piece != x)
- emit_move_insn (target_piece, x);
+ newx = expand_binop (word_mode,
+ normalizep == 1 ? binoptab : otheroptab,
+ x, carry_in,
+ NULL_RTX, 1, next_methods);
if (i + 1 < nwords)
{
- /* THIS CODE HAS NOT BEEN TESTED. */
/* Get out carry from adding/subtracting carry in. */
+ rtx carry_tmp = gen_reg_rtx (word_mode);
carry_tmp = emit_store_flag_force (carry_tmp,
- binoptab == add_optab
- ? LT : GT,
- x, carry_in,
+ (binoptab == add_optab
+ ? LT : GT),
+ newx, x,
word_mode, 1, normalizep);
/* Logical-ior the two poss. carry together. */
if (carry_out == 0)
break;
}
+ emit_move_insn (target_piece, newx);
}
carry_in = carry_out;
int unsignedp;
enum optab_methods methods;
{
- register rtx temp;
+ rtx temp;
optab direct_optab = unsignedp ? uoptab : soptab;
struct optab wide_soptab;
if (binoptab->handlers[(int) wider_mode].insn_code
!= CODE_FOR_nothing)
{
- register rtx t0 = gen_reg_rtx (wider_mode);
- register rtx t1 = gen_reg_rtx (wider_mode);
+ rtx t0 = gen_reg_rtx (wider_mode);
+ rtx t1 = gen_reg_rtx (wider_mode);
rtx cop0 = convert_modes (wider_mode, mode, op0, unsignedp);
rtx cop1 = convert_modes (wider_mode, mode, op1, unsignedp);
return 0;
}
\f
+/* Wrapper around expand_unop which takes an rtx code to specify
+ the operation to perform, not an optab pointer. All other
+ arguments are the same. */
+rtx
+expand_simple_unop (mode, code, op0, target, unsignedp)
+ enum machine_mode mode;
+ enum rtx_code code;
+ rtx op0;
+ rtx target;
+ int unsignedp;
+{
+ optab unop = code_to_optab [(int) code];
+ if (unop == 0)
+ abort ();
+
+ return expand_unop (mode, unop, op0, target, unsignedp);
+}
+
/* Generate code to perform an operation specified by UNOPTAB
on operand OP0, with result having machine-mode MODE.
{
enum mode_class class;
enum machine_mode wider_mode;
- register rtx temp;
+ rtx temp;
rtx last = get_last_insn ();
rtx pat;
{
enum mode_class class = GET_MODE_CLASS (mode);
enum machine_mode wider_mode;
- register rtx temp;
+ rtx temp;
rtx entry_last = get_last_insn ();
rtx last;
rtx pat;
rtx op0;
enum rtx_code code;
{
- register rtx temp;
+ rtx temp;
enum machine_mode mode0 = insn_data[icode].operand[1].mode;
rtx pat;
into a MEM later. Protect the libcall block from this change. */
if (! REG_P (target) || REG_USERVAR_P (target))
target = gen_reg_rtx (GET_MODE (target));
-
+
+ /* If we're using non-call exceptions, a libcall corresponding to an
+ operation that may trap may also trap. */
+ if (flag_non_call_exceptions && may_trap_p (equiv))
+ {
+ for (insn = insns; insn; insn = NEXT_INSN (insn))
+ if (GET_CODE (insn) == CALL_INSN)
+ {
+ rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
+
+ if (note != 0 && INTVAL (XEXP (note, 0)) <= 0)
+ remove_note (insn, note);
+ }
+ }
+ else
/* look for any CALL_INSNs in this sequence, and attach a REG_EH_REGION
reg note to indicate that this call cannot throw or execute a nonlocal
goto (unless there is already a REG_EH_REGION note, in which case
we update it). */
-
- for (insn = insns; insn; insn = NEXT_INSN (insn))
- if (GET_CODE (insn) == CALL_INSN)
- {
- rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
-
- if (note != 0)
- XEXP (note, 0) = GEN_INT (-1);
- else
- REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, GEN_INT (-1),
- REG_NOTES (insn));
- }
+ for (insn = insns; insn; insn = NEXT_INSN (insn))
+ if (GET_CODE (insn) == CALL_INSN)
+ {
+ rtx note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
+
+ if (note != 0)
+ XEXP (note, 0) = GEN_INT (-1);
+ else
+ REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, GEN_INT (-1),
+ REG_NOTES (insn));
+ }
/* First emit all insns that set pseudos. Remove them from the list as
we go. Avoid insns that set pseudos which were referenced in previous
first = NEXT_INSN (prev);
/* Encapsulate the block so it gets manipulated as a unit. */
- REG_NOTES (first) = gen_rtx_INSN_LIST (REG_LIBCALL, last,
- REG_NOTES (first));
- REG_NOTES (last) = gen_rtx_INSN_LIST (REG_RETVAL, first, REG_NOTES (last));
+ if (!flag_non_call_exceptions || !may_trap_p (equiv))
+ {
+ REG_NOTES (first) = gen_rtx_INSN_LIST (REG_LIBCALL, last,
+ REG_NOTES (first));
+ REG_NOTES (last) = gen_rtx_INSN_LIST (REG_RETVAL, first,
+ REG_NOTES (last));
+ }
}
\f
/* Generate code to store zero in X. */
/* Before emitting an insn with code ICODE, make sure that X, which is going
to be used for operand OPNUM of the insn, is converted from mode MODE to
- WIDER_MODE (UNSIGNEDP determines whether it is a unsigned conversion), and
+ WIDER_MODE (UNSIGNEDP determines whether it is an unsigned conversion), and
that it is accepted by the operand predicate. Return the new value. */
rtx
#endif /* HAVE_conditional_move */
\f
-/* These three functions generate an insn body and return it
+/* These functions generate an insn body and return it
rather than emitting the insn.
They do not protect from queued increments,
return (GEN_FCN (icode) (x, x, y));
}
+/* Generate and return an insn body to add r1 and c,
+ storing the result in r0. */
+rtx
+gen_add3_insn (r0, r1, c)
+ rtx r0, r1, c;
+{
+ int icode = (int) add_optab->handlers[(int) GET_MODE (r0)].insn_code;
+
+ if (icode == CODE_FOR_nothing
+ || ! ((*insn_data[icode].operand[0].predicate)
+ (r0, insn_data[icode].operand[0].mode))
+ || ! ((*insn_data[icode].operand[1].predicate)
+ (r1, insn_data[icode].operand[1].mode))
+ || ! ((*insn_data[icode].operand[2].predicate)
+ (c, insn_data[icode].operand[2].mode)))
+ return NULL_RTX;
+
+ return (GEN_FCN (icode) (r0, r1, c));
+}
+
int
-have_add2_insn (mode)
- enum machine_mode mode;
+have_add2_insn (x, y)
+ rtx x, y;
{
- return add_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing;
+ int icode;
+
+ if (GET_MODE (x) == VOIDmode)
+ abort ();
+
+ icode = (int) add_optab->handlers[(int) GET_MODE (x)].insn_code;
+
+ if (icode == CODE_FOR_nothing)
+ return 0;
+
+ if (! ((*insn_data[icode].operand[0].predicate)
+ (x, insn_data[icode].operand[0].mode))
+ || ! ((*insn_data[icode].operand[1].predicate)
+ (x, insn_data[icode].operand[1].mode))
+ || ! ((*insn_data[icode].operand[2].predicate)
+ (y, insn_data[icode].operand[2].mode)))
+ return 0;
+
+ return 1;
}
/* Generate and return an insn body to subtract Y from X. */
return (GEN_FCN (icode) (x, x, y));
}
+/* Generate and return an insn body to subtract r1 and c,
+ storing the result in r0. */
+rtx
+gen_sub3_insn (r0, r1, c)
+ rtx r0, r1, c;
+{
+ int icode = (int) sub_optab->handlers[(int) GET_MODE (r0)].insn_code;
+
+ if (icode == CODE_FOR_nothing
+ || ! ((*insn_data[icode].operand[0].predicate)
+ (r0, insn_data[icode].operand[0].mode))
+ || ! ((*insn_data[icode].operand[1].predicate)
+ (r1, insn_data[icode].operand[1].mode))
+ || ! ((*insn_data[icode].operand[2].predicate)
+ (c, insn_data[icode].operand[2].mode)))
+ return NULL_RTX;
+
+ return (GEN_FCN (icode) (r0, r1, c));
+}
+
int
-have_sub2_insn (mode)
- enum machine_mode mode;
+have_sub2_insn (x, y)
+ rtx x, y;
{
- return sub_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing;
+ int icode;
+
+ if (GET_MODE (x) == VOIDmode)
+ abort ();
+
+ icode = (int) sub_optab->handlers[(int) GET_MODE (x)].insn_code;
+
+ if (icode == CODE_FOR_nothing)
+ return 0;
+
+ if (! ((*insn_data[icode].operand[0].predicate)
+ (x, insn_data[icode].operand[0].mode))
+ || ! ((*insn_data[icode].operand[1].predicate)
+ (x, insn_data[icode].operand[1].mode))
+ || ! ((*insn_data[icode].operand[2].predicate)
+ (y, insn_data[icode].operand[2].mode)))
+ return 0;
+
+ return 1;
}
/* Generate the body of an instruction to copy Y into X.
gen_move_insn (x, y)
rtx x, y;
{
- register enum machine_mode mode = GET_MODE (x);
+ enum machine_mode mode = GET_MODE (x);
enum insn_code insn_code;
rtx seq;
x = gen_lowpart_common (tmode, x1);
if (x == 0 && GET_CODE (x1) == MEM)
{
- x = gen_rtx_MEM (tmode, XEXP (x1, 0));
- MEM_COPY_ATTRIBUTES (x, x1);
+ x = adjust_address_nv (x1, tmode, 0);
copy_replacements (x1, x);
}
y = gen_lowpart_common (tmode, y1);
if (y == 0 && GET_CODE (y1) == MEM)
{
- y = gen_rtx_MEM (tmode, XEXP (y1, 0));
- MEM_COPY_ATTRIBUTES (y, y1);
+ y = adjust_address_nv (y1, tmode, 0);
copy_replacements (y1, y);
}
}
enum machine_mode to_mode, from_mode;
int unsignedp;
{
- return extendtab[(int) to_mode][(int) from_mode][unsignedp != 0];
+#ifdef HAVE_ptr_extend
+ if (unsignedp < 0)
+ return CODE_FOR_ptr_extend;
+ else
+#endif
+ return extendtab[(int) to_mode][(int) from_mode][unsignedp != 0];
}
/* Generate the body of an insn to extend Y (with mode MFROM)
int unsignedp;
{
enum insn_code icode;
- register rtx target = to;
+ rtx target = to;
enum machine_mode fmode, imode;
/* Crash now, because we won't be able to decide which mode to use. */
void
expand_fix (to, from, unsignedp)
- register rtx to, from;
+ rtx to, from;
int unsignedp;
{
enum insn_code icode;
- register rtx target = to;
+ rtx target = to;
enum machine_mode fmode, imode;
int must_trunc = 0;
rtx libfcn = 0;
}
}
\f
-static optab
-init_optab (code)
+/* Report whether we have an instruction to perform the operation
+ specified by CODE on operands of mode MODE. */
+int
+have_insn_for (code, mode)
enum rtx_code code;
+ enum machine_mode mode;
+{
+ return (code_to_optab[(int) code] != 0
+ && (code_to_optab[(int) code]->handlers[(int) mode].insn_code
+ != CODE_FOR_nothing));
+}
+
+/* Create a blank optab. */
+static optab
+new_optab ()
{
int i;
optab op = (optab) xmalloc (sizeof (struct optab));
- op->code = code;
for (i = 0; i < NUM_MACHINE_MODES; i++)
{
op->handlers[i].insn_code = CODE_FOR_nothing;
op->handlers[i].libfunc = 0;
}
- if (code != UNKNOWN)
- code_to_optab[(int) code] = op;
+ return op;
+}
+
+/* Same, but fill in its code as CODE, and write it into the
+ code_to_optab table. */
+static inline optab
+init_optab (code)
+ enum rtx_code code;
+{
+ optab op = new_optab ();
+ op->code = code;
+ code_to_optab[(int) code] = op;
+ return op;
+}
+/* Same, but fill in its code as CODE, and do _not_ write it into
+ the code_to_optab table. */
+static inline optab
+init_optabv (code)
+ enum rtx_code code;
+{
+ optab op = new_optab ();
+ op->code = code;
return op;
}
static void
init_libfuncs (optable, first_mode, last_mode, opname, suffix)
- register optab optable;
- register int first_mode;
- register int last_mode;
- register const char *opname;
- register int suffix;
+ optab optable;
+ int first_mode;
+ int last_mode;
+ const char *opname;
+ int suffix;
{
- register int mode;
- register unsigned opname_len = strlen (opname);
+ int mode;
+ unsigned opname_len = strlen (opname);
for (mode = first_mode; (int) mode <= (int) last_mode;
mode = (enum machine_mode) ((int) mode + 1))
{
- register const char *mname = GET_MODE_NAME(mode);
- register unsigned mname_len = strlen (mname);
- register char *libfunc_name = alloca (2 + opname_len + mname_len + 1 + 1);
- register char *p;
- register const char *q;
+ const char *mname = GET_MODE_NAME(mode);
+ unsigned mname_len = strlen (mname);
+ char *libfunc_name = alloca (2 + opname_len + mname_len + 1 + 1);
+ char *p;
+ const char *q;
p = libfunc_name;
*p++ = '_';
static void
init_integral_libfuncs (optable, opname, suffix)
- register optab optable;
- register const char *opname;
- register int suffix;
+ optab optable;
+ const char *opname;
+ int suffix;
{
init_libfuncs (optable, SImode, TImode, opname, suffix);
}
static void
init_floating_libfuncs (optable, opname, suffix)
- register optab optable;
- register const char *opname;
- register int suffix;
+ optab optable;
+ const char *opname;
+ int suffix;
{
init_libfuncs (optable, SFmode, TFmode, opname, suffix);
}
rtx
init_one_libfunc (name)
- register const char *name;
+ const char *name;
{
- name = ggc_strdup (name);
-
- return gen_rtx_SYMBOL_REF (Pmode, name);
+ /* Create a FUNCTION_DECL that can be passed to ENCODE_SECTION_INFO. */
+ /* ??? We don't have any type information except for this is
+ a function. Pretend this is "int foo()". */
+ tree decl = build_decl (FUNCTION_DECL, get_identifier (name),
+ build_function_type (integer_type_node, NULL_TREE));
+ DECL_ARTIFICIAL (decl) = 1;
+ DECL_EXTERNAL (decl) = 1;
+ TREE_PUBLIC (decl) = 1;
+
+ /* Return the symbol_ref from the mem rtx. */
+ return XEXP (DECL_RTL (decl), 0);
}
/* Mark ARG (which is really an OPTAB *) for GC. */
#endif
add_optab = init_optab (PLUS);
- addv_optab = init_optab (PLUS);
+ addv_optab = init_optabv (PLUS);
sub_optab = init_optab (MINUS);
- subv_optab = init_optab (MINUS);
+ subv_optab = init_optabv (MINUS);
smul_optab = init_optab (MULT);
- smulv_optab = init_optab (MULT);
+ smulv_optab = init_optabv (MULT);
smul_highpart_optab = init_optab (UNKNOWN);
umul_highpart_optab = init_optab (UNKNOWN);
smul_widen_optab = init_optab (UNKNOWN);
umul_widen_optab = init_optab (UNKNOWN);
sdiv_optab = init_optab (DIV);
- sdivv_optab = init_optab (DIV);
+ sdivv_optab = init_optabv (DIV);
sdivmod_optab = init_optab (UNKNOWN);
udiv_optab = init_optab (UDIV);
udivmod_optab = init_optab (UNKNOWN);
smod_optab = init_optab (MOD);
umod_optab = init_optab (UMOD);
- flodiv_optab = init_optab (DIV);
ftrunc_optab = init_optab (UNKNOWN);
and_optab = init_optab (AND);
ior_optab = init_optab (IOR);
smax_optab = init_optab (SMAX);
umin_optab = init_optab (UMIN);
umax_optab = init_optab (UMAX);
- mov_optab = init_optab (UNKNOWN);
- movstrict_optab = init_optab (UNKNOWN);
- cmp_optab = init_optab (UNKNOWN);
+
+ /* These three have codes assigned exclusively for the sake of
+ have_insn_for. */
+ mov_optab = init_optab (SET);
+ movstrict_optab = init_optab (STRICT_LOW_PART);
+ cmp_optab = init_optab (COMPARE);
+
ucmp_optab = init_optab (UNKNOWN);
tst_optab = init_optab (UNKNOWN);
neg_optab = init_optab (NEG);
- negv_optab = init_optab (NEG);
+ negv_optab = init_optabv (NEG);
abs_optab = init_optab (ABS);
- absv_optab = init_optab (ABS);
+ absv_optab = init_optabv (ABS);
one_cmpl_optab = init_optab (NOT);
ffs_optab = init_optab (FFS);
sqrt_optab = init_optab (SQRT);
cbranch_optab = init_optab (UNKNOWN);
cmov_optab = init_optab (UNKNOWN);
cstore_optab = init_optab (UNKNOWN);
+ push_optab = init_optab (UNKNOWN);
for (i = 0; i < NUM_MACHINE_MODES; i++)
{
init_integral_libfuncs (smulv_optab, "mulv", '3');
init_floating_libfuncs (smulv_optab, "mul", '3');
init_integral_libfuncs (sdiv_optab, "div", '3');
+ init_floating_libfuncs (sdiv_optab, "div", '3');
init_integral_libfuncs (sdivv_optab, "divv", '3');
init_integral_libfuncs (udiv_optab, "udiv", '3');
init_integral_libfuncs (sdivmod_optab, "divmod", '4');
init_integral_libfuncs (udivmod_optab, "udivmod", '4');
init_integral_libfuncs (smod_optab, "mod", '3');
init_integral_libfuncs (umod_optab, "umod", '3');
- init_floating_libfuncs (flodiv_optab, "div", '3');
init_floating_libfuncs (ftrunc_optab, "ftrunc", '2');
init_integral_libfuncs (and_optab, "and", '3');
init_integral_libfuncs (ior_optab, "ior", '3');
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