case FLOOR_DIV_EXPR:
case ROUND_DIV_EXPR:
case EXACT_DIV_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? usdiv_optab : ssdiv_optab;
return TYPE_UNSIGNED (type) ? udiv_optab : sdiv_optab;
case LSHIFT_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? usashl_optab : ssashl_optab;
return ashl_optab;
case RSHIFT_EXPR:
{
case POINTER_PLUS_EXPR:
case PLUS_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? usadd_optab : ssadd_optab;
return trapv ? addv_optab : add_optab;
case MINUS_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? ussub_optab : sssub_optab;
return trapv ? subv_optab : sub_optab;
case MULT_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? usmul_optab : ssmul_optab;
return trapv ? smulv_optab : smul_optab;
case NEGATE_EXPR:
+ if (TYPE_SATURATING(type))
+ return TYPE_UNSIGNED(type) ? usneg_optab : ssneg_optab;
return trapv ? negv_optab : neg_optab;
case ABS_EXPR:
switch (binoptab->code)
{
case ASHIFT:
+ case SS_ASHIFT:
+ case US_ASHIFT:
case ASHIFTRT:
case LSHIFTRT:
case ROTATE:
avoid_expensive_constant (enum machine_mode mode, optab binoptab,
rtx x, bool unsignedp)
{
- if (optimize
+ if (mode != VOIDmode
+ && optimize
&& CONSTANT_P (x)
&& rtx_cost (x, binoptab->code) > COSTS_N_INSNS (1))
{
}
}
- /* Unsigned integer, and no way to convert directly. For binary
- floating point modes, convert as signed, then conditionally adjust
- the result. */
- if (unsignedp && can_do_signed && !DECIMAL_FLOAT_MODE_P (GET_MODE (to)))
+ /* Unsigned integer, and no way to convert directly. Convert as signed,
+ then unconditionally adjust the result. For decimal float values we
+ do this only if we have already determined that a signed conversion
+ provides sufficient accuracy. */
+ if (unsignedp && (can_do_signed || !DECIMAL_FLOAT_MODE_P (GET_MODE (to))))
{
rtx label = gen_label_rtx ();
rtx temp;
0, label);
- real_2expN (&offset, GET_MODE_BITSIZE (GET_MODE (from)));
+ real_2expN (&offset, GET_MODE_BITSIZE (GET_MODE (from)), fmode);
temp = expand_binop (fmode, add_optab, target,
CONST_DOUBLE_FROM_REAL_VALUE (offset, fmode),
target, 0, OPTAB_LIB_WIDEN);
anything with a wider integer mode.
This code used to extend FP value into mode wider than the destination.
- This is not needed. Consider, for instance conversion from SFmode
+ This is needed for decimal float modes which cannot accurately
+ represent one plus the highest signed number of the same size, but
+ not for binary modes. Consider, for instance conversion from SFmode
into DImode.
The hot path through the code is dealing with inputs smaller than 2^63
and doing just the conversion, so there is no bits to lose.
In the other path we know the value is positive in the range 2^63..2^64-1
- inclusive. (as for other imput overflow happens and result is undefined)
+ inclusive. (as for other input overflow happens and result is undefined)
So we know that the most important bit set in mantissa corresponds to
2^63. The subtraction of 2^63 should not generate any rounding as it
simply clears out that bit. The rest is trivial. */
if (unsignedp && GET_MODE_BITSIZE (GET_MODE (to)) <= HOST_BITS_PER_WIDE_INT)
for (fmode = GET_MODE (from); fmode != VOIDmode;
fmode = GET_MODE_WIDER_MODE (fmode))
- if (CODE_FOR_nothing != can_fix_p (GET_MODE (to), fmode, 0,
- &must_trunc))
+ if (CODE_FOR_nothing != can_fix_p (GET_MODE (to), fmode, 0, &must_trunc)
+ && (!DECIMAL_FLOAT_MODE_P (fmode)
+ || GET_MODE_BITSIZE (fmode) > GET_MODE_BITSIZE (GET_MODE (to))))
{
int bitsize;
REAL_VALUE_TYPE offset;
rtx limit, lab1, lab2, insn;
bitsize = GET_MODE_BITSIZE (GET_MODE (to));
- real_2expN (&offset, bitsize - 1);
+ real_2expN (&offset, bitsize - 1, fmode);
limit = CONST_DOUBLE_FROM_REAL_VALUE (offset, fmode);
lab1 = gen_label_rtx ();
lab2 = gen_label_rtx ();
}
}
+/* Generate code to convert FROM or TO a fixed-point.
+ If UINTP is true, either TO or FROM is an unsigned integer.
+ If SATP is true, we need to saturate the result. */
+
+void
+expand_fixed_convert (rtx to, rtx from, int uintp, int satp)
+{
+ enum machine_mode to_mode = GET_MODE (to);
+ enum machine_mode from_mode = GET_MODE (from);
+ convert_optab tab;
+ enum rtx_code this_code;
+ enum insn_code code;
+ rtx insns, value;
+ rtx libfunc;
+
+ if (to_mode == from_mode)
+ {
+ emit_move_insn (to, from);
+ return;
+ }
+
+ if (uintp)
+ {
+ tab = satp ? satfractuns_optab : fractuns_optab;
+ this_code = satp ? UNSIGNED_SAT_FRACT : UNSIGNED_FRACT_CONVERT;
+ }
+ else
+ {
+ tab = satp ? satfract_optab : fract_optab;
+ this_code = satp ? SAT_FRACT : FRACT_CONVERT;
+ }
+ code = tab->handlers[to_mode][from_mode].insn_code;
+ if (code != CODE_FOR_nothing)
+ {
+ emit_unop_insn (code, to, from, this_code);
+ return;
+ }
+
+ libfunc = convert_optab_libfunc (tab, to_mode, from_mode);
+ gcc_assert (libfunc);
+
+ start_sequence ();
+ value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST, to_mode,
+ 1, from, from_mode);
+ insns = get_insns ();
+ end_sequence ();
+
+ emit_libcall_block (insns, to, value,
+ gen_rtx_fmt_e (tab->code, to_mode, from));
+}
+
/* Generate code to convert FROM to fixed point and store in TO. FROM
must be floating point, TO must be signed. Use the conversion optab
TAB to do the conversion. */
}
}
+/* Like gen_libfunc, but verify that fixed-point operation is involved. */
+
+static void
+gen_fixed_libfunc (optab optable, const char *opname, char suffix,
+ enum machine_mode mode)
+{
+ if (!ALL_FIXED_POINT_MODE_P (mode))
+ return;
+ gen_libfunc (optable, opname, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that signed fixed-point operation is
+ involved. */
+
+static void
+gen_signed_fixed_libfunc (optab optable, const char *opname, char suffix,
+ enum machine_mode mode)
+{
+ if (!SIGNED_FIXED_POINT_MODE_P (mode))
+ return;
+ gen_libfunc (optable, opname, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that unsigned fixed-point operation is
+ involved. */
+
+static void
+gen_unsigned_fixed_libfunc (optab optable, const char *opname, char suffix,
+ enum machine_mode mode)
+{
+ if (!UNSIGNED_FIXED_POINT_MODE_P (mode))
+ return;
+ gen_libfunc (optable, opname, suffix, mode);
+}
+
/* Like gen_libfunc, but verify that FP or INT operation is involved. */
static void
}
}
+/* Like gen_libfunc, but verify that FP or INT or FIXED operation is
+ involved. */
+
+static void
+gen_int_fp_fixed_libfunc (optab optable, const char *name, char suffix,
+ enum machine_mode mode)
+{
+ if (DECIMAL_FLOAT_MODE_P (mode) || GET_MODE_CLASS (mode) == MODE_FLOAT)
+ gen_fp_libfunc (optable, name, suffix, mode);
+ if (INTEGRAL_MODE_P (mode))
+ gen_int_libfunc (optable, name, suffix, mode);
+ if (ALL_FIXED_POINT_MODE_P (mode))
+ gen_fixed_libfunc (optable, name, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that FP or INT or signed FIXED operation is
+ involved. */
+
+static void
+gen_int_fp_signed_fixed_libfunc (optab optable, const char *name, char suffix,
+ enum machine_mode mode)
+{
+ if (DECIMAL_FLOAT_MODE_P (mode) || GET_MODE_CLASS (mode) == MODE_FLOAT)
+ gen_fp_libfunc (optable, name, suffix, mode);
+ if (INTEGRAL_MODE_P (mode))
+ gen_int_libfunc (optable, name, suffix, mode);
+ if (SIGNED_FIXED_POINT_MODE_P (mode))
+ gen_signed_fixed_libfunc (optable, name, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that INT or FIXED operation is
+ involved. */
+
+static void
+gen_int_fixed_libfunc (optab optable, const char *name, char suffix,
+ enum machine_mode mode)
+{
+ if (INTEGRAL_MODE_P (mode))
+ gen_int_libfunc (optable, name, suffix, mode);
+ if (ALL_FIXED_POINT_MODE_P (mode))
+ gen_fixed_libfunc (optable, name, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that INT or signed FIXED operation is
+ involved. */
+
+static void
+gen_int_signed_fixed_libfunc (optab optable, const char *name, char suffix,
+ enum machine_mode mode)
+{
+ if (INTEGRAL_MODE_P (mode))
+ gen_int_libfunc (optable, name, suffix, mode);
+ if (SIGNED_FIXED_POINT_MODE_P (mode))
+ gen_signed_fixed_libfunc (optable, name, suffix, mode);
+}
+
+/* Like gen_libfunc, but verify that INT or unsigned FIXED operation is
+ involved. */
+
+static void
+gen_int_unsigned_fixed_libfunc (optab optable, const char *name, char suffix,
+ enum machine_mode mode)
+{
+ if (INTEGRAL_MODE_P (mode))
+ gen_int_libfunc (optable, name, suffix, mode);
+ if (UNSIGNED_FIXED_POINT_MODE_P (mode))
+ gen_unsigned_fixed_libfunc (optable, name, suffix, mode);
+}
+
/* Initialize the libfunc fields of an entire group of entries of an
inter-mode-class conversion optab. The string formation rules are
similar to the ones for init_libfuncs, above, but instead of having
gen_intraclass_conv_libfunc (tab, opname, tmode, fmode);
}
+/* Pick proper libcall for fract_optab. We need to chose if we do
+ interclass or intraclass. */
+
+static void
+gen_fract_conv_libfunc (convert_optab tab,
+ const char *opname,
+ enum machine_mode tmode,
+ enum machine_mode fmode)
+{
+ if (tmode == fmode)
+ return;
+ if (!(ALL_FIXED_POINT_MODE_P (tmode) || ALL_FIXED_POINT_MODE_P (fmode)))
+ return;
+
+ if (GET_MODE_CLASS (tmode) == GET_MODE_CLASS (fmode))
+ gen_intraclass_conv_libfunc (tab, opname, tmode, fmode);
+ else
+ gen_interclass_conv_libfunc (tab, opname, tmode, fmode);
+}
+
+/* Pick proper libcall for fractuns_optab. */
+
+static void
+gen_fractuns_conv_libfunc (convert_optab tab,
+ const char *opname,
+ enum machine_mode tmode,
+ enum machine_mode fmode)
+{
+ if (tmode == fmode)
+ return;
+ /* One mode must be a fixed-point mode, and the other must be an integer
+ mode. */
+ if (!((ALL_FIXED_POINT_MODE_P (tmode) && GET_MODE_CLASS (fmode) == MODE_INT)
+ || (ALL_FIXED_POINT_MODE_P (fmode)
+ && GET_MODE_CLASS (tmode) == MODE_INT)))
+ return;
+
+ gen_interclass_conv_libfunc (tab, opname, tmode, fmode);
+}
+
+/* Pick proper libcall for satfract_optab. We need to chose if we do
+ interclass or intraclass. */
+
+static void
+gen_satfract_conv_libfunc (convert_optab tab,
+ const char *opname,
+ enum machine_mode tmode,
+ enum machine_mode fmode)
+{
+ if (tmode == fmode)
+ return;
+ /* TMODE must be a fixed-point mode. */
+ if (!ALL_FIXED_POINT_MODE_P (tmode))
+ return;
+
+ if (GET_MODE_CLASS (tmode) == GET_MODE_CLASS (fmode))
+ gen_intraclass_conv_libfunc (tab, opname, tmode, fmode);
+ else
+ gen_interclass_conv_libfunc (tab, opname, tmode, fmode);
+}
+
+/* Pick proper libcall for satfractuns_optab. */
+
+static void
+gen_satfractuns_conv_libfunc (convert_optab tab,
+ const char *opname,
+ enum machine_mode tmode,
+ enum machine_mode fmode)
+{
+ if (tmode == fmode)
+ return;
+ /* TMODE must be a fixed-point mode, and FMODE must be an integer mode. */
+ if (!(ALL_FIXED_POINT_MODE_P (tmode) && GET_MODE_CLASS (fmode) == MODE_INT))
+ return;
+
+ gen_interclass_conv_libfunc (tab, opname, tmode, fmode);
+}
+
rtx
init_one_libfunc (const char *name)
{
addv_optab = init_optabv (PLUS);
sub_optab = init_optab (MINUS);
subv_optab = init_optabv (MINUS);
+ ssadd_optab = init_optab (SS_PLUS);
+ usadd_optab = init_optab (US_PLUS);
+ sssub_optab = init_optab (SS_MINUS);
+ ussub_optab = init_optab (US_MINUS);
smul_optab = init_optab (MULT);
+ ssmul_optab = init_optab (SS_MULT);
+ usmul_optab = init_optab (US_MULT);
smulv_optab = init_optabv (MULT);
smul_highpart_optab = init_optab (UNKNOWN);
umul_highpart_optab = init_optab (UNKNOWN);
usmul_widen_optab = init_optab (UNKNOWN);
smadd_widen_optab = init_optab (UNKNOWN);
umadd_widen_optab = init_optab (UNKNOWN);
+ ssmadd_widen_optab = init_optab (UNKNOWN);
+ usmadd_widen_optab = init_optab (UNKNOWN);
smsub_widen_optab = init_optab (UNKNOWN);
umsub_widen_optab = init_optab (UNKNOWN);
+ ssmsub_widen_optab = init_optab (UNKNOWN);
+ usmsub_widen_optab = init_optab (UNKNOWN);
sdiv_optab = init_optab (DIV);
+ ssdiv_optab = init_optab (SS_DIV);
+ usdiv_optab = init_optab (US_DIV);
sdivv_optab = init_optabv (DIV);
sdivmod_optab = init_optab (UNKNOWN);
udiv_optab = init_optab (UDIV);
ior_optab = init_optab (IOR);
xor_optab = init_optab (XOR);
ashl_optab = init_optab (ASHIFT);
+ ssashl_optab = init_optab (SS_ASHIFT);
+ usashl_optab = init_optab (US_ASHIFT);
ashr_optab = init_optab (ASHIFTRT);
lshr_optab = init_optab (LSHIFTRT);
rotl_optab = init_optab (ROTATE);
unord_optab = init_optab (UNORDERED);
neg_optab = init_optab (NEG);
+ ssneg_optab = init_optab (SS_NEG);
+ usneg_optab = init_optab (US_NEG);
negv_optab = init_optabv (NEG);
abs_optab = init_optab (ABS);
absv_optab = init_optabv (ABS);
lfloor_optab = init_convert_optab (UNKNOWN);
lceil_optab = init_convert_optab (UNKNOWN);
+ fract_optab = init_convert_optab (FRACT_CONVERT);
+ fractuns_optab = init_convert_optab (UNSIGNED_FRACT_CONVERT);
+ satfract_optab = init_convert_optab (SAT_FRACT);
+ satfractuns_optab = init_convert_optab (UNSIGNED_SAT_FRACT);
+
for (i = 0; i < NUM_MACHINE_MODES; i++)
{
movmem_optab[i] = CODE_FOR_nothing;
/* Initialize the optabs with the names of the library functions. */
add_optab->libcall_basename = "add";
add_optab->libcall_suffix = '3';
- add_optab->libcall_gen = gen_int_fp_libfunc;
+ add_optab->libcall_gen = gen_int_fp_fixed_libfunc;
addv_optab->libcall_basename = "add";
addv_optab->libcall_suffix = '3';
addv_optab->libcall_gen = gen_intv_fp_libfunc;
+ ssadd_optab->libcall_basename = "ssadd";
+ ssadd_optab->libcall_suffix = '3';
+ ssadd_optab->libcall_gen = gen_signed_fixed_libfunc;
+ usadd_optab->libcall_basename = "usadd";
+ usadd_optab->libcall_suffix = '3';
+ usadd_optab->libcall_gen = gen_unsigned_fixed_libfunc;
sub_optab->libcall_basename = "sub";
sub_optab->libcall_suffix = '3';
- sub_optab->libcall_gen = gen_int_fp_libfunc;
+ sub_optab->libcall_gen = gen_int_fp_fixed_libfunc;
subv_optab->libcall_basename = "sub";
subv_optab->libcall_suffix = '3';
subv_optab->libcall_gen = gen_intv_fp_libfunc;
+ sssub_optab->libcall_basename = "sssub";
+ sssub_optab->libcall_suffix = '3';
+ sssub_optab->libcall_gen = gen_signed_fixed_libfunc;
+ ussub_optab->libcall_basename = "ussub";
+ ussub_optab->libcall_suffix = '3';
+ ussub_optab->libcall_gen = gen_unsigned_fixed_libfunc;
smul_optab->libcall_basename = "mul";
smul_optab->libcall_suffix = '3';
- smul_optab->libcall_gen = gen_int_fp_libfunc;
+ smul_optab->libcall_gen = gen_int_fp_fixed_libfunc;
smulv_optab->libcall_basename = "mul";
smulv_optab->libcall_suffix = '3';
smulv_optab->libcall_gen = gen_intv_fp_libfunc;
+ ssmul_optab->libcall_basename = "ssmul";
+ ssmul_optab->libcall_suffix = '3';
+ ssmul_optab->libcall_gen = gen_signed_fixed_libfunc;
+ usmul_optab->libcall_basename = "usmul";
+ usmul_optab->libcall_suffix = '3';
+ usmul_optab->libcall_gen = gen_unsigned_fixed_libfunc;
sdiv_optab->libcall_basename = "div";
sdiv_optab->libcall_suffix = '3';
- sdiv_optab->libcall_gen = gen_int_fp_libfunc;
+ sdiv_optab->libcall_gen = gen_int_fp_signed_fixed_libfunc;
sdivv_optab->libcall_basename = "divv";
sdivv_optab->libcall_suffix = '3';
sdivv_optab->libcall_gen = gen_int_libfunc;
+ ssdiv_optab->libcall_basename = "ssdiv";
+ ssdiv_optab->libcall_suffix = '3';
+ ssdiv_optab->libcall_gen = gen_signed_fixed_libfunc;
udiv_optab->libcall_basename = "udiv";
udiv_optab->libcall_suffix = '3';
- udiv_optab->libcall_gen = gen_int_libfunc;
+ udiv_optab->libcall_gen = gen_int_unsigned_fixed_libfunc;
+ usdiv_optab->libcall_basename = "usdiv";
+ usdiv_optab->libcall_suffix = '3';
+ usdiv_optab->libcall_gen = gen_unsigned_fixed_libfunc;
sdivmod_optab->libcall_basename = "divmod";
sdivmod_optab->libcall_suffix = '4';
sdivmod_optab->libcall_gen = gen_int_libfunc;
xor_optab->libcall_gen = gen_int_libfunc;
ashl_optab->libcall_basename = "ashl";
ashl_optab->libcall_suffix = '3';
- ashl_optab->libcall_gen = gen_int_libfunc;
+ ashl_optab->libcall_gen = gen_int_fixed_libfunc;
+ ssashl_optab->libcall_basename = "ssashl";
+ ssashl_optab->libcall_suffix = '3';
+ ssashl_optab->libcall_gen = gen_signed_fixed_libfunc;
+ usashl_optab->libcall_basename = "usashl";
+ usashl_optab->libcall_suffix = '3';
+ usashl_optab->libcall_gen = gen_unsigned_fixed_libfunc;
ashr_optab->libcall_basename = "ashr";
ashr_optab->libcall_suffix = '3';
- ashr_optab->libcall_gen = gen_int_libfunc;
+ ashr_optab->libcall_gen = gen_int_signed_fixed_libfunc;
lshr_optab->libcall_basename = "lshr";
lshr_optab->libcall_suffix = '3';
- lshr_optab->libcall_gen = gen_int_libfunc;
+ lshr_optab->libcall_gen = gen_int_unsigned_fixed_libfunc;
smin_optab->libcall_basename = "min";
smin_optab->libcall_suffix = '3';
smin_optab->libcall_gen = gen_int_fp_libfunc;
umax_optab->libcall_gen = gen_int_libfunc;
neg_optab->libcall_basename = "neg";
neg_optab->libcall_suffix = '2';
- neg_optab->libcall_gen = gen_int_fp_libfunc;
+ neg_optab->libcall_gen = gen_int_fp_fixed_libfunc;
+ ssneg_optab->libcall_basename = "ssneg";
+ ssneg_optab->libcall_suffix = '2';
+ ssneg_optab->libcall_gen = gen_signed_fixed_libfunc;
+ usneg_optab->libcall_basename = "usneg";
+ usneg_optab->libcall_suffix = '2';
+ usneg_optab->libcall_gen = gen_unsigned_fixed_libfunc;
negv_optab->libcall_basename = "neg";
negv_optab->libcall_suffix = '2';
negv_optab->libcall_gen = gen_intv_fp_libfunc;
signed/unsigned. */
cmp_optab->libcall_basename = "cmp";
cmp_optab->libcall_suffix = '2';
- cmp_optab->libcall_gen = gen_int_fp_libfunc;
+ cmp_optab->libcall_gen = gen_int_fp_fixed_libfunc;
ucmp_optab->libcall_basename = "ucmp";
ucmp_optab->libcall_suffix = '2';
ucmp_optab->libcall_gen = gen_int_libfunc;
trunc_optab->libcall_basename = "trunc";
trunc_optab->libcall_gen = gen_trunc_conv_libfunc;
+ /* Conversions for fixed-point modes and other modes. */
+ fract_optab->libcall_basename = "fract";
+ fract_optab->libcall_gen = gen_fract_conv_libfunc;
+ satfract_optab->libcall_basename = "satfract";
+ satfract_optab->libcall_gen = gen_satfract_conv_libfunc;
+ fractuns_optab->libcall_basename = "fractuns";
+ fractuns_optab->libcall_gen = gen_fractuns_conv_libfunc;
+ satfractuns_optab->libcall_basename = "satfractuns";
+ satfractuns_optab->libcall_gen = gen_satfractuns_conv_libfunc;
+
/* The ffs function operates on `int'. Fall back on it if we do not
have a libgcc2 function for that width. */
if (INT_TYPE_SIZE < BITS_PER_WORD)
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