/* Expand the basic unary and binary arithmetic operations, for GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "toplev.h"
/* Include insn-config.h before expr.h so that HAVE_conditional_move
#include "reload.h"
#include "ggc.h"
#include "real.h"
+#include "basic-block.h"
+#include "target.h"
/* Each optab contains info on how this target machine
can perform a particular operation
rtx libfunc_table[LTI_MAX];
-/* Tables of patterns for extending one integer mode to another. */
-enum insn_code extendtab[MAX_MACHINE_MODE][MAX_MACHINE_MODE][2];
-
-/* Tables of patterns for converting between fixed and floating point. */
-enum insn_code fixtab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
-enum insn_code fixtrunctab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
-enum insn_code floattab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
+/* Tables of patterns for converting one mode to another. */
+convert_optab convert_optab_table[CTI_MAX];
/* Contains the optab used for each rtx code. */
optab code_to_optab[NUM_RTX_CODE + 1];
enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
#endif
-static int add_equal_note PARAMS ((rtx, rtx, enum rtx_code, rtx, rtx));
-static rtx widen_operand PARAMS ((rtx, enum machine_mode,
- enum machine_mode, int, int));
-static int expand_cmplxdiv_straight PARAMS ((rtx, rtx, rtx, rtx,
- rtx, rtx, enum machine_mode,
- int, enum optab_methods,
- enum mode_class, optab));
-static int expand_cmplxdiv_wide PARAMS ((rtx, rtx, rtx, rtx,
- rtx, rtx, enum machine_mode,
- int, enum optab_methods,
- enum mode_class, optab));
-static enum insn_code can_fix_p PARAMS ((enum machine_mode, enum machine_mode,
- int, int *));
-static enum insn_code can_float_p PARAMS ((enum machine_mode, enum machine_mode,
- int));
-static rtx ftruncify PARAMS ((rtx));
-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));
-#ifdef HAVE_conditional_trap
-static void init_traps PARAMS ((void));
+/* The insn generating function can not take an rtx_code argument.
+ TRAP_RTX is used as an rtx argument. Its code is replaced with
+ the code to be used in the trap insn and all other fields are ignored. */
+static GTY(()) rtx trap_rtx;
+
+static int add_equal_note (rtx, rtx, enum rtx_code, rtx, rtx);
+static rtx widen_operand (rtx, enum machine_mode, enum machine_mode, int,
+ int);
+static int expand_cmplxdiv_straight (rtx, rtx, rtx, rtx, rtx, rtx,
+ enum machine_mode, int,
+ enum optab_methods, enum mode_class,
+ optab);
+static int expand_cmplxdiv_wide (rtx, rtx, rtx, rtx, rtx, rtx,
+ enum machine_mode, int, enum optab_methods,
+ enum mode_class, optab);
+static void prepare_cmp_insn (rtx *, rtx *, enum rtx_code *, rtx,
+ enum machine_mode *, int *,
+ enum can_compare_purpose);
+static enum insn_code can_fix_p (enum machine_mode, enum machine_mode, int,
+ int *);
+static enum insn_code can_float_p (enum machine_mode, enum machine_mode, int);
+static rtx ftruncify (rtx);
+static optab new_optab (void);
+static convert_optab new_convert_optab (void);
+static inline optab init_optab (enum rtx_code);
+static inline optab init_optabv (enum rtx_code);
+static inline convert_optab init_convert_optab (enum rtx_code);
+static void init_libfuncs (optab, int, int, const char *, int);
+static void init_integral_libfuncs (optab, const char *, int);
+static void init_floating_libfuncs (optab, const char *, int);
+static void init_interclass_conv_libfuncs (convert_optab, const char *,
+ enum mode_class, enum mode_class);
+static void init_intraclass_conv_libfuncs (convert_optab, const char *,
+ enum mode_class, bool);
+static void emit_cmp_and_jump_insn_1 (rtx, rtx, enum machine_mode,
+ enum rtx_code, int, rtx);
+static void prepare_float_lib_cmp (rtx *, rtx *, enum rtx_code *,
+ enum machine_mode *, int *);
+static rtx expand_vector_binop (enum machine_mode, optab, rtx, rtx, rtx, int,
+ enum optab_methods);
+static rtx expand_vector_unop (enum machine_mode, optab, rtx, rtx, int);
+static rtx widen_clz (enum machine_mode, rtx, rtx);
+static rtx expand_parity (enum machine_mode, rtx, rtx);
+
+#ifndef HAVE_conditional_trap
+#define HAVE_conditional_trap 0
+#define gen_conditional_trap(a,b) (abort (), NULL_RTX)
#endif
-static void emit_cmp_and_jump_insn_1 PARAMS ((rtx, rtx, enum machine_mode,
- enum rtx_code, int, rtx));
-static void prepare_float_lib_cmp PARAMS ((rtx *, rtx *, enum rtx_code *,
- enum machine_mode *, int *));
\f
-/* Add a REG_EQUAL note to the last insn in SEQ. TARGET is being set to
+/* Add a REG_EQUAL note to the last insn in INSNS. TARGET is being set to
the result of operation CODE applied to OP0 (and OP1 if it is a binary
operation).
again, ensuring that TARGET is not one of the operands. */
static int
-add_equal_note (seq, target, code, op0, op1)
- rtx seq;
- rtx target;
- enum rtx_code code;
- rtx op0, op1;
+add_equal_note (rtx insns, rtx target, enum rtx_code code, rtx op0, rtx op1)
{
- rtx set;
- int i;
+ rtx last_insn, insn, set;
rtx note;
- if ((GET_RTX_CLASS (code) != '1' && GET_RTX_CLASS (code) != '2'
- && GET_RTX_CLASS (code) != 'c' && GET_RTX_CLASS (code) != '<')
- || GET_CODE (seq) != SEQUENCE
- || (set = single_set (XVECEXP (seq, 0, XVECLEN (seq, 0) - 1))) == 0
- || GET_CODE (target) == ZERO_EXTRACT
- || (! rtx_equal_p (SET_DEST (set), target)
- /* For a STRICT_LOW_PART, the REG_NOTE applies to what is inside the
- SUBREG. */
- && (GET_CODE (SET_DEST (set)) != STRICT_LOW_PART
- || ! rtx_equal_p (SUBREG_REG (XEXP (SET_DEST (set), 0)),
- target))))
+ if (! insns
+ || ! INSN_P (insns)
+ || NEXT_INSN (insns) == NULL_RTX)
+ abort ();
+
+ if (GET_RTX_CLASS (code) != '1' && GET_RTX_CLASS (code) != '2'
+ && GET_RTX_CLASS (code) != 'c' && GET_RTX_CLASS (code) != '<')
+ return 1;
+
+ if (GET_CODE (target) == ZERO_EXTRACT)
+ return 1;
+
+ for (last_insn = insns;
+ NEXT_INSN (last_insn) != NULL_RTX;
+ last_insn = NEXT_INSN (last_insn))
+ ;
+
+ set = single_set (last_insn);
+ if (set == NULL_RTX)
+ return 1;
+
+ if (! rtx_equal_p (SET_DEST (set), target)
+ /* For a STRICT_LOW_PART, the REG_NOTE applies to what is inside it. */
+ && (GET_CODE (SET_DEST (set)) != STRICT_LOW_PART
+ || ! rtx_equal_p (XEXP (SET_DEST (set), 0), target)))
return 1;
/* If TARGET is in OP0 or OP1, check if anything in SEQ sets TARGET
besides the last insn. */
if (reg_overlap_mentioned_p (target, op0)
|| (op1 && reg_overlap_mentioned_p (target, op1)))
- for (i = XVECLEN (seq, 0) - 2; i >= 0; i--)
- if (reg_set_p (target, XVECEXP (seq, 0, i)))
- return 0;
+ {
+ insn = PREV_INSN (last_insn);
+ while (insn != NULL_RTX)
+ {
+ if (reg_set_p (target, insn))
+ return 0;
+
+ insn = PREV_INSN (insn);
+ }
+ }
if (GET_RTX_CLASS (code) == '1')
note = gen_rtx_fmt_e (code, GET_MODE (target), copy_rtx (op0));
else
note = gen_rtx_fmt_ee (code, GET_MODE (target), copy_rtx (op0), copy_rtx (op1));
- set_unique_reg_note (XVECEXP (seq, 0, XVECLEN (seq, 0) - 1), REG_EQUAL, note);
+ set_unique_reg_note (last_insn, REG_EQUAL, note);
return 1;
}
\f
/* Widen OP to MODE and return the rtx for the widened operand. UNSIGNEDP
says whether OP is signed or unsigned. NO_EXTEND is nonzero if we need
- not actually do a sign-extend or zero-extend, but can leave the
+ not actually do a sign-extend or zero-extend, but can leave the
higher-order bits of the result rtx undefined, for example, in the case
of logical operations, but not right shifts. */
static rtx
-widen_operand (op, mode, oldmode, unsignedp, no_extend)
- rtx op;
- enum machine_mode mode, oldmode;
- int unsignedp;
- int no_extend;
+widen_operand (rtx op, enum machine_mode mode, enum machine_mode oldmode,
+ int unsignedp, int no_extend)
{
rtx result;
- /* If we must extend do so. If OP is either a constant or a SUBREG
- for a promoted object, also extend since it will be more efficient to
- do so. */
+ /* If we don't have to extend and this is a constant, return it. */
+ if (no_extend && GET_MODE (op) == VOIDmode)
+ return op;
+
+ /* If we must extend do so. If OP is a SUBREG for a promoted object, also
+ extend since it will be more efficient to do so unless the signedness of
+ a promoted object differs from our extension. */
if (! no_extend
- || GET_MODE (op) == VOIDmode
- || (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op)))
+ || (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op)
+ && SUBREG_PROMOTED_UNSIGNED_P (op) == unsignedp))
return convert_modes (mode, oldmode, op, unsignedp);
/* If MODE is no wider than a single word, we return a paradoxical
/* Generate code to perform a straightforward complex divide. */
static int
-expand_cmplxdiv_straight (real0, real1, imag0, imag1, realr, imagr, submode,
- unsignedp, methods, class, binoptab)
- rtx real0, real1, imag0, imag1, realr, imagr;
- enum machine_mode submode;
- int unsignedp;
- enum optab_methods methods;
- enum mode_class class;
- optab binoptab;
+expand_cmplxdiv_straight (rtx real0, rtx real1, rtx imag0, rtx imag1,
+ rtx realr, rtx imagr, enum machine_mode submode,
+ int unsignedp, enum optab_methods methods,
+ enum mode_class class, optab binoptab)
{
rtx divisor;
rtx real_t, imag_t;
optab this_sub_optab = sub_optab;
optab this_neg_optab = neg_optab;
optab this_mul_optab = smul_optab;
-
+
if (binoptab == sdivv_optab)
{
this_add_optab = addv_optab;
/* Calculate the dividend. */
real_t = expand_binop (submode, this_mul_optab, real0, real1,
NULL_RTX, unsignedp, methods);
-
+
imag_t = expand_binop (submode, this_mul_optab, real0, imag1,
NULL_RTX, unsignedp, methods);
real_t = expand_binop (submode, this_add_optab, temp1, temp2,
NULL_RTX, unsignedp, methods);
-
+
temp1 = expand_binop (submode, this_mul_optab, imag0, real1,
NULL_RTX, unsignedp, methods);
/* Generate code to perform a wide-input-range-acceptable complex divide. */
static int
-expand_cmplxdiv_wide (real0, real1, imag0, imag1, realr, imagr, submode,
- unsignedp, methods, class, binoptab)
- rtx real0, real1, imag0, imag1, realr, imagr;
- enum machine_mode submode;
- int unsignedp;
- enum optab_methods methods;
- enum mode_class class;
- optab binoptab;
+expand_cmplxdiv_wide (rtx real0, rtx real1, rtx imag0, rtx imag1, rtx realr,
+ rtx imagr, enum machine_mode submode, int unsignedp,
+ enum optab_methods methods, enum mode_class class,
+ optab binoptab)
{
rtx ratio, divisor;
rtx real_t, imag_t;
rtx temp1, temp2, lab1, lab2;
enum machine_mode mode;
- int align;
rtx res;
optab this_add_optab = add_optab;
optab this_sub_optab = sub_optab;
this_neg_optab = negv_optab;
this_mul_optab = smulv_optab;
}
-
+
/* Don't fetch these from memory more than once. */
real0 = force_reg (submode, real0);
real1 = force_reg (submode, real1);
return 0;
mode = GET_MODE (temp1);
- align = GET_MODE_ALIGNMENT (mode);
lab1 = gen_label_rtx ();
emit_cmp_and_jump_insns (temp1, temp2, LT, NULL_RTX,
- mode, unsignedp, align, lab1);
+ mode, unsignedp, lab1);
/* |c| >= |d|; use ratio d/c to scale dividend and divisor. */
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;
+expand_simple_binop (enum machine_mode mode, enum rtx_code code, rtx op0,
+ rtx op1, rtx target, int unsignedp,
+ enum optab_methods methods)
{
- optab binop = code_to_optab [(int) code];
+ optab binop = code_to_optab[(int) code];
if (binop == 0)
abort ();
this may or may not be TARGET. */
rtx
-expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods)
- enum machine_mode mode;
- optab binoptab;
- rtx op0, op1;
- rtx target;
- int unsignedp;
- enum optab_methods methods;
+expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1,
+ rtx target, int unsignedp, enum optab_methods methods)
{
enum optab_methods next_methods
= (methods == OPTAB_LIB || methods == OPTAB_LIB_WIDEN
? 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
+ int shift_op = (binoptab->code == ASHIFT
|| binoptab->code == ASHIFTRT
|| binoptab->code == LSHIFTRT
|| binoptab->code == ROTATE
if (flag_force_mem)
{
- op0 = force_not_mem (op0);
- op1 = force_not_mem (op1);
+ /* Load duplicate non-volatile operands once. */
+ if (rtx_equal_p (op0, op1) && ! volatile_refs_p (op0))
+ {
+ op0 = force_not_mem (op0);
+ op1 = op0;
+ }
+ else
+ {
+ op0 = force_not_mem (op0);
+ op1 = force_not_mem (op1);
+ }
}
/* If subtracting an integer constant, convert this into an addition of
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;
}
/* In case the insn wants input operands in modes different from
- the result, convert the operands. It would seem that we
- don't need to convert CONST_INTs, but we do, so that they're
- a properly sign-extended for their modes; we choose the
- widest mode between mode and mode[01], so that, in a widening
- operation, we call convert_modes with different FROM and TO
- modes, which ensures the value is sign-extended. Shift
- operations are an exception, because the second operand needs
- not be extended to the mode of the result. */
-
- if (GET_MODE (op0) != mode0
- && mode0 != VOIDmode)
+ those of the actual operands, convert the operands. It would
+ seem that we don't need to convert CONST_INTs, but we do, so
+ that they're properly zero-extended, sign-extended or truncated
+ for their mode. */
+
+ if (GET_MODE (op0) != mode0 && mode0 != VOIDmode)
xop0 = convert_modes (mode0,
GET_MODE (op0) != VOIDmode
? GET_MODE (op0)
- : GET_MODE_SIZE (mode) > GET_MODE_SIZE (mode0)
- ? mode
- : mode0,
+ : mode,
xop0, unsignedp);
- if (GET_MODE (xop1) != mode1
- && mode1 != VOIDmode)
+ if (GET_MODE (op1) != mode1 && mode1 != VOIDmode)
xop1 = convert_modes (mode1,
GET_MODE (op1) != VOIDmode
? GET_MODE (op1)
- : (GET_MODE_SIZE (mode) > GET_MODE_SIZE (mode1)
- && ! shift_op)
- ? mode
- : mode1,
+ : mode,
xop1, unsignedp);
/* Now, if insn's predicates don't allow our operands, put them into
pat = GEN_FCN (icode) (temp, xop0, xop1);
if (pat)
{
- /* If PAT is a multi-insn sequence, try to add an appropriate
+ /* If PAT is composed of more than one insn, try to add an appropriate
REG_EQUAL note to it. If we can't because TEMP conflicts with an
operand, call ourselves again, this time without a target. */
- if (GET_CODE (pat) == SEQUENCE
+ if (INSN_P (pat) && NEXT_INSN (pat) != NULL_RTX
&& ! add_equal_note (pat, temp, binoptab->code, xop0, xop1))
{
delete_insns_since (last);
/* 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
&& GET_MODE_SIZE (mode) > UNITS_PER_WORD
&& binoptab->handlers[(int) word_mode].insn_code != CODE_FOR_nothing)
{
- unsigned int i;
+ int i;
rtx insns;
rtx equiv_value;
if (inter != 0)
inter = expand_binop (word_mode, binoptab, outof_input,
op1, outof_target, unsignedp, next_methods);
-
+
if (inter != 0 && inter != outof_target)
emit_move_insn (outof_target, inter);
}
if (shift_count > BITS_PER_WORD)
{
first_shift_count = GEN_INT (shift_count - BITS_PER_WORD);
- second_shift_count = GEN_INT (2*BITS_PER_WORD - shift_count);
+ second_shift_count = GEN_INT (2 * BITS_PER_WORD - shift_count);
}
else
{
NULL_RTX, unsignedp, next_methods);
into_temp2 = expand_binop (word_mode, reverse_unsigned_shift,
into_input, second_shift_count,
- into_target, unsignedp, next_methods);
+ NULL_RTX, unsignedp, next_methods);
if (into_temp1 != 0 && into_temp2 != 0)
inter = expand_binop (word_mode, ior_optab, into_temp1, into_temp2,
NULL_RTX, unsignedp, next_methods);
outof_temp2 = expand_binop (word_mode, reverse_unsigned_shift,
outof_input, second_shift_count,
- outof_target, unsignedp, next_methods);
+ NULL_RTX, unsignedp, next_methods);
if (inter != 0 && outof_temp1 != 0 && outof_temp2 != 0)
inter = expand_binop (word_mode, ior_optab,
if (shift_count != BITS_PER_WORD)
emit_no_conflict_block (insns, target, op0, op1, equiv_value);
else
- emit_insns (insns);
+ emit_insn (insns);
return target;
{
unsigned int i;
optab otheroptab = binoptab == add_optab ? sub_optab : add_optab;
- unsigned int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
+ const unsigned int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
rtx carry_in = NULL_RTX, carry_out = NULL_RTX;
- rtx xop0, xop1;
+ rtx xop0, xop1, xtarget;
/* We can handle either a 1 or -1 value for the carry. If STORE_FLAG
value is one of those, use it. Otherwise, use 1 since it is the
xop0 = force_reg (mode, op0);
xop1 = force_reg (mode, op1);
- if (target == 0 || GET_CODE (target) != REG
- || target == xop0 || target == xop1)
- target = gen_reg_rtx (mode);
+ xtarget = gen_reg_rtx (mode);
+
+ if (target == 0 || GET_CODE (target) != REG)
+ target = xtarget;
/* Indicate for flow that the entire target reg is being set. */
if (GET_CODE (target) == REG)
- emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
+ emit_insn (gen_rtx_CLOBBER (VOIDmode, xtarget));
/* Do the actual arithmetic. */
for (i = 0; i < nwords; i++)
{
int index = (WORDS_BIG_ENDIAN ? nwords - i - 1 : i);
- rtx target_piece = operand_subword (target, index, 1, mode);
+ rtx target_piece = operand_subword (xtarget, index, 1, mode);
rtx op0_piece = operand_subword_force (xop0, index, mode);
rtx op1_piece = operand_subword_force (xop1, index, mode);
rtx x;
if (i > 0)
{
rtx newx;
-
+
/* Add/subtract previous carry to main result. */
newx = expand_binop (word_mode,
normalizep == 1 ? binoptab : otheroptab,
}
carry_in = carry_out;
- }
+ }
- if (i == GET_MODE_BITSIZE (mode) / BITS_PER_WORD)
+ if (i == GET_MODE_BITSIZE (mode) / (unsigned) BITS_PER_WORD)
{
- if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
+ if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing
+ || ! rtx_equal_p (target, xtarget))
{
- rtx temp = emit_move_insn (target, target);
+ rtx temp = emit_move_insn (target, xtarget);
set_unique_reg_note (temp,
- REG_EQUAL,
+ REG_EQUAL,
gen_rtx_fmt_ee (binoptab->code, mode,
copy_rtx (xop0),
copy_rtx (xop1)));
}
+ else
+ target = xtarget;
return target;
}
/* If we want to multiply two two-word values and have normal and widening
multiplies of single-word values, we can do this with three smaller
multiplications. Note that we do not make a REG_NO_CONFLICT block here
- because we are not operating on one word at a time.
+ because we are not operating on one word at a time.
The multiplication proceeds as follows:
_______________________
rtx temp = expand_binop (word_mode, binoptab, op0_low, op1_xhigh,
NULL_RTX, 0, OPTAB_DIRECT);
+ if (!REG_P (product_high))
+ product_high = force_reg (word_mode, product_high);
+
if (temp != 0)
temp = expand_binop (word_mode, add_optab, temp, product_high,
product_high, 0, next_methods);
emit_move_insn (product_high, temp);
if (temp != 0)
- temp = expand_binop (word_mode, binoptab, op1_low, op0_xhigh,
+ temp = expand_binop (word_mode, binoptab, op1_low, op0_xhigh,
NULL_RTX, 0, OPTAB_DIRECT);
if (temp != 0)
if (temp != 0 && temp != product_high)
emit_move_insn (product_high, temp);
+ emit_move_insn (operand_subword (product, high, 1, mode), product_high);
+
if (temp != 0)
{
if (mov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
{
temp = emit_move_insn (product, product);
set_unique_reg_note (temp,
- REG_EQUAL,
+ REG_EQUAL,
gen_rtx_fmt_ee (MULT, mode,
copy_rtx (op0),
copy_rtx (op1)));
delete_insns_since (last);
}
+ /* Open-code the vector operations if we have no hardware support
+ for them. */
+ if (class == MODE_VECTOR_INT || class == MODE_VECTOR_FLOAT)
+ return expand_vector_binop (mode, binoptab, op0, op1, target,
+ unsignedp, methods);
+
/* We need to open-code the complex type operations: '+, -, * and /' */
/* At this point we allow operations between two similar complex
rtx real0 = 0, imag0 = 0;
rtx real1 = 0, imag1 = 0;
rtx realr, imagr, res;
- rtx seq;
- rtx equiv_value;
+ rtx seq, result;
int ok = 0;
- /* Find the correct mode for the real and imaginary parts */
- enum machine_mode submode
- = mode_for_size (GET_MODE_UNIT_SIZE (mode) * BITS_PER_UNIT,
- class == MODE_COMPLEX_INT ? MODE_INT : MODE_FLOAT,
- 0);
+ /* Find the correct mode for the real and imaginary parts. */
+ enum machine_mode submode = GET_MODE_INNER (mode);
if (submode == BLKmode)
abort ();
- if (! target)
- target = gen_reg_rtx (mode);
-
start_sequence ();
- realr = gen_realpart (submode, target);
- imagr = gen_imagpart (submode, target);
-
if (GET_MODE (op0) == mode)
{
real0 = gen_realpart (submode, op0);
else
real1 = op1;
- if (real0 == 0 || real1 == 0 || ! (imag0 != 0|| imag1 != 0))
+ if (real0 == 0 || real1 == 0 || ! (imag0 != 0 || imag1 != 0))
abort ();
+ result = gen_reg_rtx (mode);
+ realr = gen_realpart (submode, result);
+ imagr = gen_imagpart (submode, result);
+
switch (binoptab->code)
{
case PLUS:
else if (res != realr)
emit_move_insn (realr, res);
- if (imag0 && imag1)
+ if (imag0 != 0 && imag1 != 0)
res = expand_binop (submode, binoptab, imag0, imag1,
imagr, unsignedp, methods);
- else if (imag0)
+ else if (imag0 != 0)
res = imag0;
else if (binoptab->code == MINUS)
res = expand_unop (submode,
case MULT:
/* (a+ib) * (c+id) = (ac-bd) + i(ad+cb) */
- if (imag0 && imag1)
+ if (imag0 != 0 && imag1 != 0)
{
rtx temp1, temp2;
temp1 = expand_binop (submode, binoptab, real0, imag1,
NULL_RTX, unsignedp, methods);
- temp2 = expand_binop (submode, binoptab, real1, imag0,
- NULL_RTX, unsignedp, methods);
+ /* Avoid expanding redundant multiplication for the common
+ case of squaring a complex number. */
+ if (rtx_equal_p (real0, real1) && rtx_equal_p (imag0, imag1))
+ temp2 = temp1;
+ else
+ temp2 = expand_binop (submode, binoptab, real1, imag0,
+ NULL_RTX, unsignedp, methods);
if (temp1 == 0 || temp2 == 0)
- break;
+ break;
res = (expand_binop
(submode,
case DIV:
/* (a+ib) / (c+id) = ((ac+bd)/(cc+dd)) + i((bc-ad)/(cc+dd)) */
-
+
if (imag1 == 0)
{
/* (a+ib) / (c+i0) = (a/c) + i(b/c) */
}
}
break;
-
+
default:
abort ();
}
if (ok)
{
- if (binoptab->code != UNKNOWN)
- equiv_value
- = gen_rtx_fmt_ee (binoptab->code, mode,
- copy_rtx (op0), copy_rtx (op1));
- else
- equiv_value = 0;
-
- emit_no_conflict_block (seq, target, op0, op1, equiv_value);
-
- return target;
+ rtx equiv = gen_rtx_fmt_ee (binoptab->code, mode,
+ copy_rtx (op0), copy_rtx (op1));
+ emit_no_conflict_block (seq, result, op0, op1, equiv);
+ return result;
}
}
delete_insns_since (entry_last);
return 0;
}
+
+/* Like expand_binop, but for open-coding vectors binops. */
+
+static rtx
+expand_vector_binop (enum machine_mode mode, optab binoptab, rtx op0,
+ rtx op1, rtx target, int unsignedp,
+ enum optab_methods methods)
+{
+ enum machine_mode submode, tmode;
+ int size, elts, subsize, subbitsize, i;
+ rtx t, a, b, res, seq;
+ enum mode_class class;
+
+ class = GET_MODE_CLASS (mode);
+
+ size = GET_MODE_SIZE (mode);
+ submode = GET_MODE_INNER (mode);
+
+ /* Search for the widest vector mode with the same inner mode that is
+ still narrower than MODE and that allows to open-code this operator.
+ Note, if we find such a mode and the handler later decides it can't
+ do the expansion, we'll be called recursively with the narrower mode. */
+ for (tmode = GET_CLASS_NARROWEST_MODE (class);
+ GET_MODE_SIZE (tmode) < GET_MODE_SIZE (mode);
+ tmode = GET_MODE_WIDER_MODE (tmode))
+ {
+ if (GET_MODE_INNER (tmode) == GET_MODE_INNER (mode)
+ && binoptab->handlers[(int) tmode].insn_code != CODE_FOR_nothing)
+ submode = tmode;
+ }
+
+ switch (binoptab->code)
+ {
+ case AND:
+ case IOR:
+ case XOR:
+ tmode = int_mode_for_mode (mode);
+ if (tmode != BLKmode)
+ submode = tmode;
+ case PLUS:
+ case MINUS:
+ case MULT:
+ case DIV:
+ subsize = GET_MODE_SIZE (submode);
+ subbitsize = GET_MODE_BITSIZE (submode);
+ elts = size / subsize;
+
+ /* If METHODS is OPTAB_DIRECT, we don't insist on the exact mode,
+ but that we operate on more than one element at a time. */
+ if (subsize == GET_MODE_UNIT_SIZE (mode) && methods == OPTAB_DIRECT)
+ return 0;
+
+ start_sequence ();
+
+ /* Errors can leave us with a const0_rtx as operand. */
+ if (GET_MODE (op0) != mode)
+ op0 = copy_to_mode_reg (mode, op0);
+ if (GET_MODE (op1) != mode)
+ op1 = copy_to_mode_reg (mode, op1);
+
+ if (!target)
+ target = gen_reg_rtx (mode);
+
+ for (i = 0; i < elts; ++i)
+ {
+ /* If this is part of a register, and not the first item in the
+ word, we can't store using a SUBREG - that would clobber
+ previous results.
+ And storing with a SUBREG is only possible for the least
+ significant part, hence we can't do it for big endian
+ (unless we want to permute the evaluation order. */
+ if (GET_CODE (target) == REG
+ && (BYTES_BIG_ENDIAN
+ ? subsize < UNITS_PER_WORD
+ : ((i * subsize) % UNITS_PER_WORD) != 0))
+ t = NULL_RTX;
+ else
+ t = simplify_gen_subreg (submode, target, mode, i * subsize);
+ if (CONSTANT_P (op0))
+ a = simplify_gen_subreg (submode, op0, mode, i * subsize);
+ else
+ a = extract_bit_field (op0, subbitsize, i * subbitsize, unsignedp,
+ NULL_RTX, submode, submode, size);
+ if (CONSTANT_P (op1))
+ b = simplify_gen_subreg (submode, op1, mode, i * subsize);
+ else
+ b = extract_bit_field (op1, subbitsize, i * subbitsize, unsignedp,
+ NULL_RTX, submode, submode, size);
+
+ if (binoptab->code == DIV)
+ {
+ if (class == MODE_VECTOR_FLOAT)
+ res = expand_binop (submode, binoptab, a, b, t,
+ unsignedp, methods);
+ else
+ res = expand_divmod (0, TRUNC_DIV_EXPR, submode,
+ a, b, t, unsignedp);
+ }
+ else
+ res = expand_binop (submode, binoptab, a, b, t,
+ unsignedp, methods);
+
+ if (res == 0)
+ break;
+
+ if (t)
+ emit_move_insn (t, res);
+ else
+ store_bit_field (target, subbitsize, i * subbitsize, submode, res,
+ size);
+ }
+ break;
+
+ default:
+ abort ();
+ }
+
+ seq = get_insns ();
+ end_sequence ();
+ emit_insn (seq);
+
+ return target;
+}
+
+/* Like expand_unop but for open-coding vector unops. */
+
+static rtx
+expand_vector_unop (enum machine_mode mode, optab unoptab, rtx op0,
+ rtx target, int unsignedp)
+{
+ enum machine_mode submode, tmode;
+ int size, elts, subsize, subbitsize, i;
+ rtx t, a, res, seq;
+
+ size = GET_MODE_SIZE (mode);
+ submode = GET_MODE_INNER (mode);
+
+ /* Search for the widest vector mode with the same inner mode that is
+ still narrower than MODE and that allows to open-code this operator.
+ Note, if we find such a mode and the handler later decides it can't
+ do the expansion, we'll be called recursively with the narrower mode. */
+ for (tmode = GET_CLASS_NARROWEST_MODE (GET_MODE_CLASS (mode));
+ GET_MODE_SIZE (tmode) < GET_MODE_SIZE (mode);
+ tmode = GET_MODE_WIDER_MODE (tmode))
+ {
+ if (GET_MODE_INNER (tmode) == GET_MODE_INNER (mode)
+ && unoptab->handlers[(int) tmode].insn_code != CODE_FOR_nothing)
+ submode = tmode;
+ }
+ /* If there is no negate operation, try doing a subtract from zero. */
+ if (unoptab == neg_optab && GET_MODE_CLASS (submode) == MODE_INT
+ /* Avoid infinite recursion when an
+ error has left us with the wrong mode. */
+ && GET_MODE (op0) == mode)
+ {
+ rtx temp;
+ temp = expand_binop (mode, sub_optab, CONST0_RTX (mode), op0,
+ target, unsignedp, OPTAB_DIRECT);
+ if (temp)
+ return temp;
+ }
+
+ if (unoptab == one_cmpl_optab)
+ {
+ tmode = int_mode_for_mode (mode);
+ if (tmode != BLKmode)
+ submode = tmode;
+ }
+
+ subsize = GET_MODE_SIZE (submode);
+ subbitsize = GET_MODE_BITSIZE (submode);
+ elts = size / subsize;
+
+ /* Errors can leave us with a const0_rtx as operand. */
+ if (GET_MODE (op0) != mode)
+ op0 = copy_to_mode_reg (mode, op0);
+
+ if (!target)
+ target = gen_reg_rtx (mode);
+
+ start_sequence ();
+
+ for (i = 0; i < elts; ++i)
+ {
+ /* If this is part of a register, and not the first item in the
+ word, we can't store using a SUBREG - that would clobber
+ previous results.
+ And storing with a SUBREG is only possible for the least
+ significant part, hence we can't do it for big endian
+ (unless we want to permute the evaluation order. */
+ if (GET_CODE (target) == REG
+ && (BYTES_BIG_ENDIAN
+ ? subsize < UNITS_PER_WORD
+ : ((i * subsize) % UNITS_PER_WORD) != 0))
+ t = NULL_RTX;
+ else
+ t = simplify_gen_subreg (submode, target, mode, i * subsize);
+ if (CONSTANT_P (op0))
+ a = simplify_gen_subreg (submode, op0, mode, i * subsize);
+ else
+ a = extract_bit_field (op0, subbitsize, i * subbitsize, unsignedp,
+ t, submode, submode, size);
+
+ res = expand_unop (submode, unoptab, a, t, unsignedp);
+
+ if (t)
+ emit_move_insn (t, res);
+ else
+ store_bit_field (target, subbitsize, i * subbitsize, submode, res,
+ size);
+ }
+
+ seq = get_insns ();
+ end_sequence ();
+ emit_insn (seq);
+
+ return target;
+}
\f
/* Expand a binary operator which has both signed and unsigned forms.
UOPTAB is the optab for unsigned operations, and SOPTAB is for
of an unsigned wider operation, since the result would be the same. */
rtx
-sign_expand_binop (mode, uoptab, soptab, op0, op1, target, unsignedp, methods)
- enum machine_mode mode;
- optab uoptab, soptab;
- rtx op0, op1, target;
- int unsignedp;
- enum optab_methods methods;
+sign_expand_binop (enum machine_mode mode, optab uoptab, optab soptab,
+ rtx op0, rtx op1, rtx target, int unsignedp,
+ enum optab_methods methods)
{
- register rtx temp;
+ rtx temp;
optab direct_optab = unsignedp ? uoptab : soptab;
struct optab wide_soptab;
Returns 1 if this operation can be performed; 0 if not. */
int
-expand_twoval_binop (binoptab, op0, op1, targ0, targ1, unsignedp)
- optab binoptab;
- rtx op0, op1;
- rtx targ0, targ1;
- int unsignedp;
+expand_twoval_binop (optab binoptab, rtx op0, rtx op1, rtx targ0, rtx targ1,
+ int unsignedp)
{
enum machine_mode mode = GET_MODE (targ0 ? targ0 : targ1);
enum mode_class class;
rtx pat;
rtx xop0 = op0, xop1 = op1;
- /* In case this insn wants input operands in modes different from the
- result, convert the operands. */
- if (GET_MODE (op0) != VOIDmode && GET_MODE (op0) != mode0)
- xop0 = convert_to_mode (mode0, xop0, unsignedp);
+ /* In case the insn wants input operands in modes different from
+ those of the actual operands, convert the operands. It would
+ seem that we don't need to convert CONST_INTs, but we do, so
+ that they're properly zero-extended, sign-extended or truncated
+ for their mode. */
+
+ if (GET_MODE (op0) != mode0 && mode0 != VOIDmode)
+ xop0 = convert_modes (mode0,
+ GET_MODE (op0) != VOIDmode
+ ? GET_MODE (op0)
+ : mode,
+ xop0, unsignedp);
- if (GET_MODE (op1) != VOIDmode && GET_MODE (op1) != mode1)
- xop1 = convert_to_mode (mode1, xop1, unsignedp);
+ if (GET_MODE (op1) != mode1 && mode1 != VOIDmode)
+ xop1 = convert_modes (mode1,
+ GET_MODE (op1) != VOIDmode
+ ? GET_MODE (op1)
+ : mode,
+ xop1, unsignedp);
/* Now, if insn doesn't accept these operands, put them into pseudos. */
if (! (*insn_data[icode].operand[1].predicate) (xop0, mode0))
if (! (*insn_data[icode].operand[0].predicate) (targ0, mode)
|| ! (*insn_data[icode].operand[3].predicate) (targ1, mode))
abort ();
-
+
pat = GEN_FCN (icode) (targ0, xop0, xop1, targ1);
if (pat)
{
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);
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;
+expand_simple_unop (enum machine_mode mode, enum rtx_code code, rtx op0,
+ rtx target, int unsignedp)
{
- optab unop = code_to_optab [(int) code];
+ optab unop = code_to_optab[(int) code];
if (unop == 0)
abort ();
return expand_unop (mode, unop, op0, target, unsignedp);
}
+/* Try calculating
+ (clz:narrow x)
+ as
+ (clz:wide (zero_extend:wide x)) - ((width wide) - (width narrow)). */
+static rtx
+widen_clz (enum machine_mode mode, rtx op0, rtx target)
+{
+ enum mode_class class = GET_MODE_CLASS (mode);
+ if (class == MODE_INT || class == MODE_FLOAT || class == MODE_COMPLEX_FLOAT)
+ {
+ enum machine_mode wider_mode;
+ for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode;
+ wider_mode = GET_MODE_WIDER_MODE (wider_mode))
+ {
+ if (clz_optab->handlers[(int) wider_mode].insn_code
+ != CODE_FOR_nothing)
+ {
+ rtx xop0, temp, last;
+
+ last = get_last_insn ();
+
+ if (target == 0)
+ target = gen_reg_rtx (mode);
+ xop0 = widen_operand (op0, wider_mode, mode, true, false);
+ temp = expand_unop (wider_mode, clz_optab, xop0, NULL_RTX, true);
+ if (temp != 0)
+ temp = expand_binop (wider_mode, sub_optab, temp,
+ GEN_INT (GET_MODE_BITSIZE (wider_mode)
+ - GET_MODE_BITSIZE (mode)),
+ target, true, OPTAB_DIRECT);
+ if (temp == 0)
+ delete_insns_since (last);
+
+ return temp;
+ }
+ }
+ }
+ return 0;
+}
+
+/* Try calculating (parity x) as (and (popcount x) 1), where
+ popcount can also be done in a wider mode. */
+static rtx
+expand_parity (enum machine_mode mode, rtx op0, rtx target)
+{
+ enum mode_class class = GET_MODE_CLASS (mode);
+ if (class == MODE_INT || class == MODE_FLOAT || class == MODE_COMPLEX_FLOAT)
+ {
+ enum machine_mode wider_mode;
+ for (wider_mode = mode; wider_mode != VOIDmode;
+ wider_mode = GET_MODE_WIDER_MODE (wider_mode))
+ {
+ if (popcount_optab->handlers[(int) wider_mode].insn_code
+ != CODE_FOR_nothing)
+ {
+ rtx xop0, temp, last;
+
+ last = get_last_insn ();
+
+ if (target == 0)
+ target = gen_reg_rtx (mode);
+ xop0 = widen_operand (op0, wider_mode, mode, true, false);
+ temp = expand_unop (wider_mode, popcount_optab, xop0, NULL_RTX,
+ true);
+ if (temp != 0)
+ temp = expand_binop (wider_mode, and_optab, temp, const1_rtx,
+ target, true, OPTAB_DIRECT);
+ if (temp == 0)
+ delete_insns_since (last);
+
+ return temp;
+ }
+ }
+ }
+ return 0;
+}
+
/* Generate code to perform an operation specified by UNOPTAB
on operand OP0, with result having machine-mode MODE.
this may or may not be TARGET. */
rtx
-expand_unop (mode, unoptab, op0, target, unsignedp)
- enum machine_mode mode;
- optab unoptab;
- rtx op0;
- rtx target;
- int unsignedp;
+expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target,
+ int unsignedp)
{
enum mode_class class;
enum machine_mode wider_mode;
- register rtx temp;
+ rtx temp;
rtx last = get_last_insn ();
rtx pat;
pat = GEN_FCN (icode) (temp, xop0);
if (pat)
{
- if (GET_CODE (pat) == SEQUENCE
+ if (INSN_P (pat) && NEXT_INSN (pat) != NULL_RTX
&& ! add_equal_note (pat, temp, unoptab->code, xop0, NULL_RTX))
{
delete_insns_since (last);
}
emit_insn (pat);
-
+
return temp;
}
else
/* It can't be done in this mode. Can we open-code it in a wider mode? */
+ /* Widening clz needs special treatment. */
+ if (unoptab == clz_optab)
+ {
+ temp = widen_clz (mode, op0, target);
+ if (temp)
+ return temp;
+ else
+ goto try_libcall;
+ }
+
if (class == MODE_INT || class == MODE_FLOAT || class == MODE_COMPLEX_FLOAT)
for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode;
wider_mode = GET_MODE_WIDER_MODE (wider_mode))
(unoptab == neg_optab
|| unoptab == one_cmpl_optab)
&& class == MODE_INT);
-
+
temp = expand_unop (wider_mode, unoptab, xop0, NULL_RTX,
unsignedp);
&& GET_MODE_SIZE (mode) > UNITS_PER_WORD
&& unoptab->handlers[(int) word_mode].insn_code != CODE_FOR_nothing)
{
- unsigned int i;
+ int i;
rtx insns;
if (target == 0 || target == op0)
rtx x = expand_unop (word_mode, unoptab,
operand_subword_force (op0, i, mode),
target_piece, unsignedp);
+
if (target_piece != x)
emit_move_insn (target_piece, x);
}
rtx x;
rtx seq;
- /* Find the correct mode for the real and imaginary parts */
- enum machine_mode submode
- = mode_for_size (GET_MODE_UNIT_SIZE (mode) * BITS_PER_UNIT,
- class == MODE_COMPLEX_INT ? MODE_INT : MODE_FLOAT,
- 0);
+ /* Find the correct mode for the real and imaginary parts. */
+ enum machine_mode submode = GET_MODE_INNER (mode);
if (submode == BLKmode)
abort ();
if (target == 0)
target = gen_reg_rtx (mode);
-
+
start_sequence ();
target_piece = gen_imagpart (submode, target);
return target;
}
+ /* Try negating floating point values by flipping the sign bit. */
+ if (unoptab->code == NEG && class == MODE_FLOAT
+ && GET_MODE_BITSIZE (mode) <= 2 * HOST_BITS_PER_WIDE_INT)
+ {
+ const struct real_format *fmt = REAL_MODE_FORMAT (mode);
+ enum machine_mode imode = int_mode_for_mode (mode);
+ int bitpos = (fmt != 0) ? fmt->signbit : -1;
+
+ if (imode != BLKmode && bitpos >= 0 && fmt->has_signed_zero)
+ {
+ HOST_WIDE_INT hi, lo;
+ rtx last = get_last_insn ();
+
+ /* Handle targets with different FP word orders. */
+ if (FLOAT_WORDS_BIG_ENDIAN != WORDS_BIG_ENDIAN)
+ {
+ int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
+ int word = nwords - (bitpos / BITS_PER_WORD) - 1;
+ bitpos = word * BITS_PER_WORD + bitpos % BITS_PER_WORD;
+ }
+
+ if (bitpos < HOST_BITS_PER_WIDE_INT)
+ {
+ hi = 0;
+ lo = (HOST_WIDE_INT) 1 << bitpos;
+ }
+ else
+ {
+ hi = (HOST_WIDE_INT) 1 << (bitpos - HOST_BITS_PER_WIDE_INT);
+ lo = 0;
+ }
+ temp = expand_binop (imode, xor_optab,
+ gen_lowpart (imode, op0),
+ immed_double_const (lo, hi, imode),
+ NULL_RTX, 1, OPTAB_LIB_WIDEN);
+ if (temp != 0)
+ {
+ rtx insn;
+ if (target == 0)
+ target = gen_reg_rtx (mode);
+ insn = emit_move_insn (target, gen_lowpart (mode, temp));
+ set_unique_reg_note (insn, REG_EQUAL,
+ gen_rtx_fmt_e (NEG, mode,
+ copy_rtx (op0)));
+ return target;
+ }
+ delete_insns_since (last);
+ }
+ }
+
+ /* Try calculating parity (x) as popcount (x) % 2. */
+ if (unoptab == parity_optab)
+ {
+ temp = expand_parity (mode, op0, target);
+ if (temp)
+ return temp;
+ }
+
+ try_libcall:
/* Now try a library call in this mode. */
if (unoptab->handlers[(int) mode].libfunc)
{
rtx insns;
rtx value;
+ enum machine_mode outmode = mode;
+
+ /* All of these functions return small values. Thus we choose to
+ have them return something that isn't a double-word. */
+ if (unoptab == ffs_optab || unoptab == clz_optab || unoptab == ctz_optab
+ || unoptab == popcount_optab || unoptab == parity_optab)
+ outmode
+ = GET_MODE (hard_libcall_value (TYPE_MODE (integer_type_node)));
start_sequence ();
/* Pass 1 for NO_QUEUE so we don't lose any increments
if the libcall is cse'd or moved. */
value = emit_library_call_value (unoptab->handlers[(int) mode].libfunc,
- NULL_RTX, LCT_CONST, mode, 1, op0, mode);
+ NULL_RTX, LCT_CONST, outmode,
+ 1, op0, mode);
insns = get_insns ();
end_sequence ();
- target = gen_reg_rtx (mode);
+ target = gen_reg_rtx (outmode);
emit_libcall_block (insns, target, value,
gen_rtx_fmt_e (unoptab->code, mode, op0));
return target;
}
+ if (class == MODE_VECTOR_FLOAT || class == MODE_VECTOR_INT)
+ return expand_vector_unop (mode, unoptab, op0, target, unsignedp);
+
/* It can't be done in this mode. Can we do it in a wider mode? */
if (class == MODE_INT || class == MODE_FLOAT || class == MODE_COMPLEX_FLOAT)
(unoptab == neg_optab
|| unoptab == one_cmpl_optab)
&& class == MODE_INT);
-
+
temp = expand_unop (wider_mode, unoptab, xop0, NULL_RTX,
unsignedp);
+ /* If we are generating clz using wider mode, adjust the
+ result. */
+ if (unoptab == clz_optab && temp != 0)
+ temp = expand_binop (wider_mode, sub_optab, temp,
+ GEN_INT (GET_MODE_BITSIZE (wider_mode)
+ - GET_MODE_BITSIZE (mode)),
+ target, true, OPTAB_DIRECT);
+
if (temp)
{
if (class != MODE_INT)
/* If there is no negate operation, try doing a subtract from zero.
The US Software GOFAST library needs this. */
if (unoptab->code == NEG)
- {
+ {
rtx temp;
temp = expand_binop (mode,
unoptab == negv_optab ? subv_optab : sub_optab,
if (temp)
return temp;
}
-
+
return 0;
}
\f
*/
rtx
-expand_abs (mode, op0, target, result_unsignedp, safe)
- enum machine_mode mode;
- rtx op0;
- rtx target;
- int result_unsignedp;
- int safe;
+expand_abs_nojump (enum machine_mode mode, rtx op0, rtx target,
+ int result_unsignedp)
{
- rtx temp, op1;
+ rtx temp;
if (! flag_trapv)
result_unsignedp = 1;
if (temp != 0)
return temp;
- /* If we have a MAX insn, we can do this as MAX (x, -x). */
- if (smax_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
+ /* For floating point modes, try clearing the sign bit. */
+ if (GET_MODE_CLASS (mode) == MODE_FLOAT
+ && GET_MODE_BITSIZE (mode) <= 2 * HOST_BITS_PER_WIDE_INT)
{
- rtx last = get_last_insn ();
+ const struct real_format *fmt = REAL_MODE_FORMAT (mode);
+ enum machine_mode imode = int_mode_for_mode (mode);
+ int bitpos = (fmt != 0) ? fmt->signbit : -1;
- temp = expand_unop (mode, neg_optab, op0, NULL_RTX, 0);
- if (temp != 0)
- temp = expand_binop (mode, smax_optab, op0, temp, target, 0,
- OPTAB_WIDEN);
+ if (imode != BLKmode && bitpos >= 0)
+ {
+ HOST_WIDE_INT hi, lo;
+ rtx last = get_last_insn ();
- if (temp != 0)
- return temp;
+ /* Handle targets with different FP word orders. */
+ if (FLOAT_WORDS_BIG_ENDIAN != WORDS_BIG_ENDIAN)
+ {
+ int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
+ int word = nwords - (bitpos / BITS_PER_WORD) - 1;
+ bitpos = word * BITS_PER_WORD + bitpos % BITS_PER_WORD;
+ }
- delete_insns_since (last);
- }
+ if (bitpos < HOST_BITS_PER_WIDE_INT)
+ {
+ hi = 0;
+ lo = (HOST_WIDE_INT) 1 << bitpos;
+ }
+ else
+ {
+ hi = (HOST_WIDE_INT) 1 << (bitpos - HOST_BITS_PER_WIDE_INT);
+ lo = 0;
+ }
+ temp = expand_binop (imode, and_optab,
+ gen_lowpart (imode, op0),
+ immed_double_const (~lo, ~hi, imode),
+ NULL_RTX, 1, OPTAB_LIB_WIDEN);
+ if (temp != 0)
+ {
+ rtx insn;
+ if (target == 0)
+ target = gen_reg_rtx (mode);
+ insn = emit_move_insn (target, gen_lowpart (mode, temp));
+ set_unique_reg_note (insn, REG_EQUAL,
+ gen_rtx_fmt_e (ABS, mode,
+ copy_rtx (op0)));
+ return target;
+ }
+ delete_insns_since (last);
+ }
+ }
+
+ /* If we have a MAX insn, we can do this as MAX (x, -x). */
+ if (smax_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
+ {
+ rtx last = get_last_insn ();
+
+ temp = expand_unop (mode, neg_optab, op0, NULL_RTX, 0);
+ if (temp != 0)
+ temp = expand_binop (mode, smax_optab, op0, temp, target, 0,
+ OPTAB_WIDEN);
+
+ if (temp != 0)
+ return temp;
+
+ delete_insns_since (last);
+ }
/* If this machine has expensive jumps, we can do integer absolute
value of X as (((signed) x >> (W-1)) ^ x) - ((signed) x >> (W-1)),
return temp;
}
+ return NULL_RTX;
+}
+
+rtx
+expand_abs (enum machine_mode mode, rtx op0, rtx target,
+ int result_unsignedp, int safe)
+{
+ rtx temp, op1;
+
+ if (! flag_trapv)
+ result_unsignedp = 1;
+
+ temp = expand_abs_nojump (mode, op0, target, result_unsignedp);
+ if (temp != 0)
+ return temp;
+
/* If that does not win, use conditional jump and negate. */
/* It is safe to use the target if it is the same
compare word by word. Rely on CSE to optimize constant cases. */
if (GET_MODE_CLASS (mode) == MODE_INT
&& ! can_compare_p (GE, mode, ccp_jump))
- do_jump_by_parts_greater_rtx (mode, 0, target, const0_rtx,
+ do_jump_by_parts_greater_rtx (mode, 0, target, const0_rtx,
NULL_RTX, op1);
else
do_compare_rtx_and_jump (target, CONST0_RTX (mode), GE, 0, mode,
- NULL_RTX, 0, NULL_RTX, op1);
+ NULL_RTX, NULL_RTX, op1);
op0 = expand_unop (mode, result_unsignedp ? neg_optab : negv_optab,
target, target, 0);
UNSIGNEDP is relevant for complex integer modes. */
rtx
-expand_complex_abs (mode, op0, target, unsignedp)
- enum machine_mode mode;
- rtx op0;
- rtx target;
- int unsignedp;
+expand_complex_abs (enum machine_mode mode, rtx op0, rtx target,
+ int unsignedp)
{
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;
optab this_abs_optab;
/* Find the correct mode for the real and imaginary parts. */
- enum machine_mode submode
- = mode_for_size (GET_MODE_UNIT_SIZE (mode) * BITS_PER_UNIT,
- class == MODE_COMPLEX_INT ? MODE_INT : MODE_FLOAT,
- 0);
+ enum machine_mode submode = GET_MODE_INNER (mode);
if (submode == BLKmode)
abort ();
pat = GEN_FCN (icode) (temp, xop0);
if (pat)
{
- if (GET_CODE (pat) == SEQUENCE
- && ! add_equal_note (pat, temp, this_abs_optab->code, xop0,
+ if (INSN_P (pat) && NEXT_INSN (pat) != NULL_RTX
+ && ! add_equal_note (pat, temp, this_abs_optab->code, xop0,
NULL_RTX))
{
delete_insns_since (last);
- return expand_unop (mode, this_abs_optab, op0, NULL_RTX,
+ return expand_unop (mode, this_abs_optab, op0, NULL_RTX,
unsignedp);
}
emit_insn (pat);
-
+
return temp;
}
else
for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode;
wider_mode = GET_MODE_WIDER_MODE (wider_mode))
{
- if (this_abs_optab->handlers[(int) wider_mode].insn_code
+ if (this_abs_optab->handlers[(int) wider_mode].insn_code
!= CODE_FOR_nothing)
{
rtx xop0 = op0;
the value that is stored into TARGET. */
void
-emit_unop_insn (icode, target, op0, code)
- int icode;
- rtx target;
- rtx op0;
- enum rtx_code code;
+emit_unop_insn (int icode, rtx target, rtx op0, enum rtx_code code)
{
- register rtx temp;
+ rtx temp;
enum machine_mode mode0 = insn_data[icode].operand[1].mode;
rtx pat;
pat = GEN_FCN (icode) (temp, op0);
- if (GET_CODE (pat) == SEQUENCE && code != UNKNOWN)
+ if (INSN_P (pat) && NEXT_INSN (pat) != NULL_RTX && code != UNKNOWN)
add_equal_note (pat, temp, code, op0, NULL_RTX);
-
+
emit_insn (pat);
if (temp != target)
INSNS is a block of code generated to perform the operation, not including
the CLOBBER and final copy. All insns that compute intermediate values
- are first emitted, followed by the block as described above.
+ are first emitted, followed by the block as described above.
TARGET, OP0, and OP1 are the output and inputs of the operations,
respectively. OP1 may be zero for a unary operation.
- EQUIV, if non-zero, is an expression to be placed into a REG_EQUAL note
+ EQUIV, if nonzero, is an expression to be placed into a REG_EQUAL note
on the last insn.
If TARGET is not a register, INSNS is simply emitted with no special
The final insn emitted is returned. */
rtx
-emit_no_conflict_block (insns, target, op0, op1, equiv)
- rtx insns;
- rtx target;
- rtx op0, op1;
- rtx equiv;
+emit_no_conflict_block (rtx insns, rtx target, rtx op0, rtx op1, rtx equiv)
{
rtx prev, next, first, last, insn;
if (GET_CODE (target) != REG || reload_in_progress)
- return emit_insns (insns);
+ return emit_insn (insns);
else
for (insn = insns; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) != INSN
|| find_reg_note (insn, REG_LIBCALL, NULL_RTX))
- return emit_insns (insns);
+ return emit_insn (insns);
/* First emit all insns that do not store into words of the output and remove
these from the list. */
for (insn = insns; insn; insn = next)
{
- rtx set = 0;
+ rtx set = 0, note;
int i;
next = NEXT_INSN (insn);
+ /* Some ports (cris) create a libcall regions at their own. We must
+ avoid any potential nesting of LIBCALLs. */
+ if ((note = find_reg_note (insn, REG_LIBCALL, NULL)) != NULL)
+ remove_note (insn, note);
+ if ((note = find_reg_note (insn, REG_RETVAL, NULL)) != NULL)
+ remove_note (insn, note);
+
if (GET_CODE (PATTERN (insn)) == SET || GET_CODE (PATTERN (insn)) == USE
|| GET_CODE (PATTERN (insn)) == CLOBBER)
set = PATTERN (insn);
block is delimited by REG_RETVAL and REG_LIBCALL notes. */
void
-emit_libcall_block (insns, target, result, equiv)
- rtx insns;
- rtx target;
- rtx result;
- rtx equiv;
+emit_libcall_block (rtx insns, rtx target, rtx result, rtx equiv)
{
rtx final_dest = target;
rtx prev, next, first, last, insn;
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))
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);
}
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);
+ XEXP (note, 0) = constm1_rtx;
else
- REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, GEN_INT (-1),
+ REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, constm1_rtx,
REG_NOTES (insn));
}
for (insn = insns; insn; insn = next)
{
rtx set = single_set (insn);
+ rtx note;
+
+ /* Some ports (cris) create a libcall regions at their own. We must
+ avoid any potential nesting of LIBCALLs. */
+ if ((note = find_reg_note (insn, REG_LIBCALL, NULL)) != NULL)
+ remove_note (insn, note);
+ if ((note = find_reg_note (insn, REG_RETVAL, NULL)) != NULL)
+ remove_note (insn, note);
next = NEXT_INSN (insn);
add_insn (insn);
}
+
+ /* Some ports use a loop to copy large arguments onto the stack.
+ Don't move anything outside such a loop. */
+ if (GET_CODE (insn) == CODE_LABEL)
+ break;
}
prev = get_last_insn ();
/* Encapsulate the block so it gets manipulated as a unit. */
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));
+ /* We can't attach the REG_LIBCALL and REG_RETVAL notes
+ when the encapsulated region would not be in one basic block,
+ i.e. when there is a control_flow_insn_p insn between FIRST and LAST.
+ */
+ bool attach_libcall_retval_notes = true;
+ next = NEXT_INSN (last);
+ for (insn = first; insn != next; insn = NEXT_INSN (insn))
+ if (control_flow_insn_p (insn))
+ {
+ attach_libcall_retval_notes = false;
+ break;
+ }
+
+ if (attach_libcall_retval_notes)
+ {
+ 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. */
void
-emit_clr_insn (x)
- rtx x;
+emit_clr_insn (rtx x)
{
emit_move_insn (x, const0_rtx);
}
assuming it contains zero beforehand. */
void
-emit_0_to_1_insn (x)
- rtx x;
+emit_0_to_1_insn (rtx x)
{
emit_move_insn (x, const1_rtx);
}
comparison code we will be using.
??? Actually, CODE is slightly weaker than that. A target is still
- required to implement all of the normal bcc operations, but not
+ required to implement all of the normal bcc operations, but not
required to implement all (or any) of the unordered bcc operations. */
-
+
int
-can_compare_p (code, mode, purpose)
- enum rtx_code code;
- enum machine_mode mode;
- enum can_compare_purpose purpose;
+can_compare_p (enum rtx_code code, enum machine_mode mode,
+ enum can_compare_purpose purpose)
{
do
{
- if (cmp_optab->handlers[(int)mode].insn_code != CODE_FOR_nothing)
+ if (cmp_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
{
if (purpose == ccp_jump)
- return bcc_gen_fctn[(int)code] != NULL;
+ return bcc_gen_fctn[(int) code] != NULL;
else if (purpose == ccp_store_flag)
- return setcc_gen_code[(int)code] != CODE_FOR_nothing;
+ return setcc_gen_code[(int) code] != CODE_FOR_nothing;
else
/* There's only one cmov entry point, and it's allowed to fail. */
return 1;
}
if (purpose == ccp_jump
- && cbranch_optab->handlers[(int)mode].insn_code != CODE_FOR_nothing)
+ && cbranch_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
return 1;
if (purpose == ccp_cmov
- && cmov_optab->handlers[(int)mode].insn_code != CODE_FOR_nothing)
+ && cmov_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
return 1;
if (purpose == ccp_store_flag
- && cstore_optab->handlers[(int)mode].insn_code != CODE_FOR_nothing)
+ && cstore_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
return 1;
mode = GET_MODE_WIDER_MODE (mode);
*PUNSIGNEDP nonzero says that the operands are unsigned;
this matters if they need to be widened.
- If they have mode BLKmode, then SIZE specifies the size of both operands,
- and ALIGN specifies the known shared alignment of the operands.
+ If they have mode BLKmode, then SIZE specifies the size of both operands.
This function performs all the setup necessary so that the caller only has
to emit a single comparison insn. This setup can involve doing a BLKmode
The values which are passed in through pointers can be modified; the caller
should perform the comparison on the modified values. */
-void
-prepare_cmp_insn (px, py, pcomparison, size, pmode, punsignedp, align,
- purpose)
- rtx *px, *py;
- enum rtx_code *pcomparison;
- rtx size;
- enum machine_mode *pmode;
- int *punsignedp;
- int align ATTRIBUTE_UNUSED;
- enum can_compare_purpose purpose;
+static void
+prepare_cmp_insn (rtx *px, rtx *py, enum rtx_code *pcomparison, rtx size,
+ enum machine_mode *pmode, int *punsignedp,
+ enum can_compare_purpose purpose)
{
enum machine_mode mode = *pmode;
rtx x = *px, y = *py;
int unsignedp = *punsignedp;
enum mode_class class;
- rtx opalign ATTRIBUTE_UNUSED = GEN_INT (align / BITS_PER_UNIT);;
class = GET_MODE_CLASS (mode);
if (mode != BLKmode && flag_force_mem)
{
- x = force_not_mem (x);
- y = force_not_mem (y);
+ /* Load duplicate non-volatile operands once. */
+ if (rtx_equal_p (x, y) && ! volatile_refs_p (x))
+ {
+ x = force_not_mem (x);
+ y = x;
+ }
+ else
+ {
+ x = force_not_mem (x);
+ y = force_not_mem (y);
+ }
}
/* If we are inside an appropriately-short loop and one operand is an
states that canonical comparisons are required only for targets which
have cc0. */
if (CONSTANT_P (x) && ! CONSTANT_P (y))
- abort();
+ abort ();
#endif
/* Don't let both operands fail to indicate the mode. */
if (mode == BLKmode)
{
+ enum machine_mode cmp_mode, result_mode;
+ enum insn_code cmp_code;
+ tree length_type;
+ rtx libfunc;
rtx result;
- enum machine_mode result_mode;
+ rtx opalign
+ = GEN_INT (MIN (MEM_ALIGN (x), MEM_ALIGN (y)) / BITS_PER_UNIT);
+
+ if (size == 0)
+ abort ();
emit_queue ();
x = protect_from_queue (x, 0);
y = protect_from_queue (y, 0);
+ size = protect_from_queue (size, 0);
- if (size == 0)
- abort ();
-#ifdef HAVE_cmpstrqi
- if (HAVE_cmpstrqi
- && GET_CODE (size) == CONST_INT
- && INTVAL (size) < (1 << GET_MODE_BITSIZE (QImode)))
- {
- result_mode = insn_data[(int) CODE_FOR_cmpstrqi].operand[0].mode;
- result = gen_reg_rtx (result_mode);
- emit_insn (gen_cmpstrqi (result, x, y, size, opalign));
- }
- else
-#endif
-#ifdef HAVE_cmpstrhi
- if (HAVE_cmpstrhi
- && GET_CODE (size) == CONST_INT
- && INTVAL (size) < (1 << GET_MODE_BITSIZE (HImode)))
- {
- result_mode = insn_data[(int) CODE_FOR_cmpstrhi].operand[0].mode;
- result = gen_reg_rtx (result_mode);
- emit_insn (gen_cmpstrhi (result, x, y, size, opalign));
- }
- else
-#endif
-#ifdef HAVE_cmpstrsi
- if (HAVE_cmpstrsi)
+ /* Try to use a memory block compare insn - either cmpstr
+ or cmpmem will do. */
+ for (cmp_mode = GET_CLASS_NARROWEST_MODE (MODE_INT);
+ cmp_mode != VOIDmode;
+ cmp_mode = GET_MODE_WIDER_MODE (cmp_mode))
{
- result_mode = insn_data[(int) CODE_FOR_cmpstrsi].operand[0].mode;
+ cmp_code = cmpmem_optab[cmp_mode];
+ if (cmp_code == CODE_FOR_nothing)
+ cmp_code = cmpstr_optab[cmp_mode];
+ if (cmp_code == CODE_FOR_nothing)
+ continue;
+
+ /* Must make sure the size fits the insn's mode. */
+ if ((GET_CODE (size) == CONST_INT
+ && INTVAL (size) >= (1 << GET_MODE_BITSIZE (cmp_mode)))
+ || (GET_MODE_BITSIZE (GET_MODE (size))
+ > GET_MODE_BITSIZE (cmp_mode)))
+ continue;
+
+ result_mode = insn_data[cmp_code].operand[0].mode;
result = gen_reg_rtx (result_mode);
- size = protect_from_queue (size, 0);
- emit_insn (gen_cmpstrsi (result, x, y,
- convert_to_mode (SImode, size, 1),
- opalign));
+ size = convert_to_mode (cmp_mode, size, 1);
+ emit_insn (GEN_FCN (cmp_code) (result, x, y, size, opalign));
+
+ *px = result;
+ *py = const0_rtx;
+ *pmode = result_mode;
+ return;
}
- else
-#endif
- {
+
+ /* Otherwise call a library function, memcmp if we've got it,
+ bcmp otherwise. */
#ifdef TARGET_MEM_FUNCTIONS
- emit_library_call (memcmp_libfunc, LCT_PURE_MAKE_BLOCK,
- TYPE_MODE (integer_type_node), 3,
- XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
- convert_to_mode (TYPE_MODE (sizetype), size,
- TREE_UNSIGNED (sizetype)),
- TYPE_MODE (sizetype));
+ libfunc = memcmp_libfunc;
+ length_type = sizetype;
#else
- emit_library_call (bcmp_libfunc, LCT_PURE_MAKE_BLOCK,
- TYPE_MODE (integer_type_node), 3,
- XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
- convert_to_mode (TYPE_MODE (integer_type_node),
- size,
- TREE_UNSIGNED (integer_type_node)),
- TYPE_MODE (integer_type_node));
+ libfunc = bcmp_libfunc;
+ length_type = integer_type_node;
#endif
-
- /* Immediately move the result of the libcall into a pseudo
- register so reload doesn't clobber the value if it needs
- the return register for a spill reg. */
- result = gen_reg_rtx (TYPE_MODE (integer_type_node));
- result_mode = TYPE_MODE (integer_type_node);
- emit_move_insn (result,
- hard_libcall_value (result_mode));
- }
+ result_mode = TYPE_MODE (integer_type_node);
+ cmp_mode = TYPE_MODE (length_type);
+ size = convert_to_mode (TYPE_MODE (length_type), size,
+ TREE_UNSIGNED (length_type));
+
+ result = emit_library_call_value (libfunc, 0, LCT_PURE_MAKE_BLOCK,
+ result_mode, 3,
+ XEXP (x, 0), Pmode,
+ XEXP (y, 0), Pmode,
+ size, cmp_mode);
*px = result;
*py = const0_rtx;
*pmode = result_mode;
if (unsignedp && ucmp_optab->handlers[(int) mode].libfunc)
libfunc = ucmp_optab->handlers[(int) mode].libfunc;
- emit_library_call (libfunc, 1,
- word_mode, 2, x, mode, y, mode);
-
- /* Immediately move the result of the libcall into a pseudo
- register so reload doesn't clobber the value if it needs
- the return register for a spill reg. */
- result = gen_reg_rtx (word_mode);
- emit_move_insn (result, hard_libcall_value (word_mode));
+ result = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST_MAKE_BLOCK,
+ word_mode, 2, x, mode, y, mode);
/* Integer comparison returns a result that must be compared against 1,
so that even if we do an unsigned compare afterward,
/* 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
-prepare_operand (icode, x, opnum, mode, wider_mode, unsignedp)
- int icode;
- rtx x;
- int opnum;
- enum machine_mode mode, wider_mode;
- int unsignedp;
+prepare_operand (int icode, rtx x, int opnum, enum machine_mode mode,
+ enum machine_mode wider_mode, int unsignedp)
{
x = protect_from_queue (x, 0);
if (! (*insn_data[icode].operand[opnum].predicate)
(x, insn_data[icode].operand[opnum].mode))
- x = copy_to_mode_reg (insn_data[icode].operand[opnum].mode, x);
+ {
+ if (no_new_pseudos)
+ return NULL_RTX;
+ x = copy_to_mode_reg (insn_data[icode].operand[opnum].mode, x);
+ }
+
return x;
}
be NULL_RTX which indicates that only a comparison is to be generated. */
static void
-emit_cmp_and_jump_insn_1 (x, y, mode, comparison, unsignedp, label)
- rtx x, y;
- enum machine_mode mode;
- enum rtx_code comparison;
- int unsignedp;
- rtx label;
+emit_cmp_and_jump_insn_1 (rtx x, rtx y, enum machine_mode mode,
+ enum rtx_code comparison, int unsignedp, rtx label)
{
rtx test = gen_rtx_fmt_ee (comparison, mode, x, y);
enum mode_class class = GET_MODE_CLASS (mode);
PUT_MODE (test, wider_mode);
if (label)
- {
- icode = cbranch_optab->handlers[(int)wider_mode].insn_code;
-
+ {
+ icode = cbranch_optab->handlers[(int) wider_mode].insn_code;
+
if (icode != CODE_FOR_nothing
&& (*insn_data[icode].operand[0].predicate) (test, wider_mode))
{
break;
wider_mode = GET_MODE_WIDER_MODE (wider_mode);
- } while (wider_mode != VOIDmode);
+ }
+ while (wider_mode != VOIDmode);
abort ();
}
need to be widened by emit_cmp_insn. UNSIGNEDP is also used to select
the proper branch condition code.
- If X and Y have mode BLKmode, then SIZE specifies the size of both X and Y,
- and ALIGN specifies the known shared alignment of X and Y.
+ If X and Y have mode BLKmode, then SIZE specifies the size of both X and Y.
MODE is the mode of the inputs (in case they are const_int).
unsigned variant based on UNSIGNEDP to select a proper jump instruction. */
void
-emit_cmp_and_jump_insns (x, y, comparison, size, mode, unsignedp, align, label)
- rtx x, y;
- enum rtx_code comparison;
- rtx size;
- enum machine_mode mode;
- int unsignedp;
- unsigned int align;
- rtx label;
+emit_cmp_and_jump_insns (rtx x, rtx y, enum rtx_code comparison, rtx size,
+ enum machine_mode mode, int unsignedp, rtx label)
{
rtx op0 = x, op1 = y;
emit_queue ();
if (unsignedp)
comparison = unsigned_condition (comparison);
- prepare_cmp_insn (&op0, &op1, &comparison, size, &mode, &unsignedp, align,
+
+ prepare_cmp_insn (&op0, &op1, &comparison, size, &mode, &unsignedp,
ccp_jump);
emit_cmp_and_jump_insn_1 (op0, op1, mode, comparison, unsignedp, label);
}
/* Like emit_cmp_and_jump_insns, but generate only the comparison. */
void
-emit_cmp_insn (x, y, comparison, size, mode, unsignedp, align)
- rtx x, y;
- enum rtx_code comparison;
- rtx size;
- enum machine_mode mode;
- int unsignedp;
- unsigned int align;
+emit_cmp_insn (rtx x, rtx y, enum rtx_code comparison, rtx size,
+ enum machine_mode mode, int unsignedp)
{
- emit_cmp_and_jump_insns (x, y, comparison, size, mode, unsignedp, align, 0);
+ emit_cmp_and_jump_insns (x, y, comparison, size, mode, unsignedp, 0);
}
\f
/* Emit a library call comparison between floating point X and Y.
COMPARISON is the rtl operator to compare with (EQ, NE, GT, etc.). */
static void
-prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
- rtx *px, *py;
- enum rtx_code *pcomparison;
- enum machine_mode *pmode;
- int *punsignedp;
+prepare_float_lib_cmp (rtx *px, rtx *py, enum rtx_code *pcomparison,
+ enum machine_mode *pmode, int *punsignedp)
{
enum rtx_code comparison = *pcomparison;
- rtx x = *px = protect_from_queue (*px, 0);
- rtx y = *py = protect_from_queue (*py, 0);
- enum machine_mode mode = GET_MODE (x);
+ enum rtx_code swapped = swap_condition (comparison);
+ rtx x = protect_from_queue (*px, 0);
+ rtx y = protect_from_queue (*py, 0);
+ enum machine_mode orig_mode = GET_MODE (x);
+ enum machine_mode mode;
+ rtx value, target, insns, equiv;
rtx libfunc = 0;
- rtx result;
-
- if (mode == HFmode)
- switch (comparison)
- {
- case EQ:
- libfunc = eqhf2_libfunc;
- break;
-
- case NE:
- libfunc = nehf2_libfunc;
- break;
-
- case GT:
- libfunc = gthf2_libfunc;
- break;
-
- case GE:
- libfunc = gehf2_libfunc;
- break;
-
- case LT:
- libfunc = lthf2_libfunc;
- break;
-
- case LE:
- libfunc = lehf2_libfunc;
- break;
-
- case UNORDERED:
- libfunc = unordhf2_libfunc;
- break;
-
- default:
- break;
- }
- else if (mode == SFmode)
- switch (comparison)
- {
- case EQ:
- libfunc = eqsf2_libfunc;
- break;
-
- case NE:
- libfunc = nesf2_libfunc;
- break;
-
- case GT:
- libfunc = gtsf2_libfunc;
- break;
-
- case GE:
- libfunc = gesf2_libfunc;
- break;
-
- case LT:
- libfunc = ltsf2_libfunc;
- break;
-
- case LE:
- libfunc = lesf2_libfunc;
- break;
- case UNORDERED:
- libfunc = unordsf2_libfunc;
- break;
-
- default:
- break;
- }
- else if (mode == DFmode)
- switch (comparison)
- {
- case EQ:
- libfunc = eqdf2_libfunc;
- break;
-
- case NE:
- libfunc = nedf2_libfunc;
- break;
-
- case GT:
- libfunc = gtdf2_libfunc;
- break;
-
- case GE:
- libfunc = gedf2_libfunc;
- break;
-
- case LT:
- libfunc = ltdf2_libfunc;
- break;
-
- case LE:
- libfunc = ledf2_libfunc;
- break;
-
- case UNORDERED:
- libfunc = unorddf2_libfunc;
- break;
-
- default:
- break;
- }
- else if (mode == XFmode)
- switch (comparison)
- {
- case EQ:
- libfunc = eqxf2_libfunc;
- break;
-
- case NE:
- libfunc = nexf2_libfunc;
- break;
-
- case GT:
- libfunc = gtxf2_libfunc;
- break;
-
- case GE:
- libfunc = gexf2_libfunc;
- break;
-
- case LT:
- libfunc = ltxf2_libfunc;
- break;
-
- case LE:
- libfunc = lexf2_libfunc;
- break;
-
- case UNORDERED:
- libfunc = unordxf2_libfunc;
- break;
-
- default:
- break;
- }
- else if (mode == TFmode)
- switch (comparison)
- {
- case EQ:
- libfunc = eqtf2_libfunc;
- break;
-
- case NE:
- libfunc = netf2_libfunc;
- break;
-
- case GT:
- libfunc = gttf2_libfunc;
- break;
-
- case GE:
- libfunc = getf2_libfunc;
+ for (mode = orig_mode; mode != VOIDmode; mode = GET_MODE_WIDER_MODE (mode))
+ {
+ if ((libfunc = code_to_optab[comparison]->handlers[mode].libfunc))
break;
- case LT:
- libfunc = lttf2_libfunc;
- break;
+ if ((libfunc = code_to_optab[swapped]->handlers[mode].libfunc))
+ {
+ rtx tmp;
+ tmp = x; x = y; y = tmp;
+ comparison = swapped;
+ break;
+ }
+ }
- case LE:
- libfunc = letf2_libfunc;
- break;
+ if (mode == VOIDmode)
+ abort ();
- case UNORDERED:
- libfunc = unordtf2_libfunc;
- break;
+ if (mode != orig_mode)
+ {
+ x = convert_to_mode (mode, x, 0);
+ y = convert_to_mode (mode, y, 0);
+ }
- default:
- break;
- }
+ /* Attach a REG_EQUAL note describing the semantics of the libcall to
+ the RTL. The allows the RTL optimizers to delete the libcall if the
+ condition can be determined at compile-time. */
+ if (comparison == UNORDERED)
+ {
+ rtx temp = simplify_gen_relational (NE, word_mode, mode, x, x);
+ equiv = simplify_gen_relational (NE, word_mode, mode, y, y);
+ equiv = simplify_gen_ternary (IF_THEN_ELSE, word_mode, word_mode,
+ temp, const_true_rtx, equiv);
+ }
else
{
- enum machine_mode wider_mode;
-
- for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode;
- wider_mode = GET_MODE_WIDER_MODE (wider_mode))
+ equiv = simplify_gen_relational (comparison, word_mode, mode, x, y);
+ if (! FLOAT_LIB_COMPARE_RETURNS_BOOL (mode, comparison))
{
- if ((cmp_optab->handlers[(int) wider_mode].insn_code
- != CODE_FOR_nothing)
- || (cmp_optab->handlers[(int) wider_mode].libfunc != 0))
+ rtx true_rtx, false_rtx;
+
+ switch (comparison)
{
- x = protect_from_queue (x, 0);
- y = protect_from_queue (y, 0);
- *px = convert_to_mode (wider_mode, x, 0);
- *py = convert_to_mode (wider_mode, y, 0);
- prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp);
- return;
+ case EQ:
+ true_rtx = const0_rtx;
+ false_rtx = const_true_rtx;
+ break;
+
+ case NE:
+ true_rtx = const_true_rtx;
+ false_rtx = const0_rtx;
+ break;
+
+ case GT:
+ true_rtx = const1_rtx;
+ false_rtx = const0_rtx;
+ break;
+
+ case GE:
+ true_rtx = const0_rtx;
+ false_rtx = constm1_rtx;
+ break;
+
+ case LT:
+ true_rtx = constm1_rtx;
+ false_rtx = const0_rtx;
+ break;
+
+ case LE:
+ true_rtx = const0_rtx;
+ false_rtx = const1_rtx;
+ break;
+
+ default:
+ abort ();
}
+ equiv = simplify_gen_ternary (IF_THEN_ELSE, word_mode, word_mode,
+ equiv, true_rtx, false_rtx);
}
- abort ();
}
- if (libfunc == 0)
- abort ();
+ start_sequence ();
+ value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST,
+ word_mode, 2, x, mode, y, mode);
+ insns = get_insns ();
+ end_sequence ();
+
+ target = gen_reg_rtx (word_mode);
+ emit_libcall_block (insns, target, value, equiv);
+
- emit_library_call (libfunc, LCT_CONST_MAKE_BLOCK, word_mode, 2, x, mode, y,
- mode);
+ if (comparison == UNORDERED
+ || FLOAT_LIB_COMPARE_RETURNS_BOOL (mode, comparison))
+ comparison = NE;
- /* Immediately move the result of the libcall into a pseudo
- register so reload doesn't clobber the value if it needs
- the return register for a spill reg. */
- result = gen_reg_rtx (word_mode);
- emit_move_insn (result, hard_libcall_value (word_mode));
- *px = result;
+ *px = target;
*py = const0_rtx;
*pmode = word_mode;
- if (comparison == UNORDERED)
- *pcomparison = NE;
-#ifdef FLOAT_LIB_COMPARE_RETURNS_BOOL
- else if (FLOAT_LIB_COMPARE_RETURNS_BOOL (mode, comparison))
- *pcomparison = NE;
-#endif
+ *pcomparison = comparison;
*punsignedp = 0;
}
\f
/* Generate code to indirectly jump to a location given in the rtx LOC. */
void
-emit_indirect_jump (loc)
- rtx loc;
+emit_indirect_jump (rtx loc)
{
- if (! ((*insn_data[(int)CODE_FOR_indirect_jump].operand[0].predicate)
+ if (! ((*insn_data[(int) CODE_FOR_indirect_jump].operand[0].predicate)
(loc, Pmode)))
loc = copy_to_mode_reg (Pmode, loc);
is not supported. */
rtx
-emit_conditional_move (target, code, op0, op1, cmode, op2, op3, mode,
- unsignedp)
- rtx target;
- enum rtx_code code;
- rtx op0, op1;
- enum machine_mode cmode;
- rtx op2, op3;
- enum machine_mode mode;
- int unsignedp;
+emit_conditional_move (rtx target, enum rtx_code code, rtx op0, rtx op1,
+ enum machine_mode cmode, rtx op2, rtx op3,
+ enum machine_mode mode, int unsignedp)
{
rtx tem, subtarget, comparison, insn;
enum insn_code icode;
/* get_condition will prefer to generate LT and GT even if the old
comparison was against zero, so undo that canonicalization here since
comparisons against zero are cheaper. */
- if (code == LT && GET_CODE (op1) == CONST_INT && INTVAL (op1) == 1)
+ if (code == LT && op1 == const1_rtx)
code = LE, op1 = const0_rtx;
- else if (code == GT && GET_CODE (op1) == CONST_INT && INTVAL (op1) == -1)
+ else if (code == GT && op1 == constm1_rtx)
code = GE, op1 = const0_rtx;
if (cmode == VOIDmode)
/* Everything should now be in the suitable form, so emit the compare insn
and then the conditional move. */
- comparison
- = compare_from_rtx (op0, op1, code, unsignedp, cmode, NULL_RTX, 0);
+ comparison
+ = compare_from_rtx (op0, op1, code, unsignedp, cmode, NULL_RTX);
/* ??? Watch for const0_rtx (nop) and const_true_rtx (unconditional)? */
/* We can get const0_rtx or const_true_rtx in some circumstances. Just
situation. */
if (GET_CODE (comparison) != code)
return NULL_RTX;
-
+
insn = GEN_FCN (icode) (subtarget, comparison, op2, op3);
/* If that failed, then give up. */
return target;
}
-/* Return non-zero if a conditional move of mode MODE is supported.
+/* Return nonzero if a conditional move of mode MODE is supported.
This function is for combine so it can tell whether an insn that looks
like a conditional move is actually supported by the hardware. If we
comparisons, and vice versa. How do we handle them? */
int
-can_conditionally_move_p (mode)
- enum machine_mode mode;
+can_conditionally_move_p (enum machine_mode mode)
{
if (movcc_gen_code[mode] != CODE_FOR_nothing)
return 1;
}
#endif /* HAVE_conditional_move */
+
+/* Emit a conditional addition instruction if the machine supports one for that
+ condition and machine mode.
+
+ OP0 and OP1 are the operands that should be compared using CODE. CMODE is
+ the mode to use should they be constants. If it is VOIDmode, they cannot
+ both be constants.
+
+ OP2 should be stored in TARGET if the comparison is true, otherwise OP2+OP3
+ should be stored there. MODE is the mode to use should they be constants.
+ If it is VOIDmode, they cannot both be constants.
+
+ The result is either TARGET (perhaps modified) or NULL_RTX if the operation
+ is not supported. */
+
+rtx
+emit_conditional_add (rtx target, enum rtx_code code, rtx op0, rtx op1,
+ enum machine_mode cmode, rtx op2, rtx op3,
+ enum machine_mode mode, int unsignedp)
+{
+ rtx tem, subtarget, comparison, insn;
+ enum insn_code icode;
+ enum rtx_code reversed;
+
+ /* If one operand is constant, make it the second one. Only do this
+ if the other operand is not constant as well. */
+
+ if (swap_commutative_operands_p (op0, op1))
+ {
+ tem = op0;
+ op0 = op1;
+ op1 = tem;
+ code = swap_condition (code);
+ }
+
+ /* get_condition will prefer to generate LT and GT even if the old
+ comparison was against zero, so undo that canonicalization here since
+ comparisons against zero are cheaper. */
+ if (code == LT && op1 == const1_rtx)
+ code = LE, op1 = const0_rtx;
+ else if (code == GT && op1 == constm1_rtx)
+ code = GE, op1 = const0_rtx;
+
+ if (cmode == VOIDmode)
+ cmode = GET_MODE (op0);
+
+ if (swap_commutative_operands_p (op2, op3)
+ && ((reversed = reversed_comparison_code_parts (code, op0, op1, NULL))
+ != UNKNOWN))
+ {
+ tem = op2;
+ op2 = op3;
+ op3 = tem;
+ code = reversed;
+ }
+
+ if (mode == VOIDmode)
+ mode = GET_MODE (op2);
+
+ icode = addcc_optab->handlers[(int) mode].insn_code;
+
+ if (icode == CODE_FOR_nothing)
+ return 0;
+
+ if (flag_force_mem)
+ {
+ op2 = force_not_mem (op2);
+ op3 = force_not_mem (op3);
+ }
+
+ if (target)
+ target = protect_from_queue (target, 1);
+ else
+ target = gen_reg_rtx (mode);
+
+ subtarget = target;
+
+ emit_queue ();
+
+ op2 = protect_from_queue (op2, 0);
+ op3 = protect_from_queue (op3, 0);
+
+ /* If the insn doesn't accept these operands, put them in pseudos. */
+
+ if (! (*insn_data[icode].operand[0].predicate)
+ (subtarget, insn_data[icode].operand[0].mode))
+ subtarget = gen_reg_rtx (insn_data[icode].operand[0].mode);
+
+ if (! (*insn_data[icode].operand[2].predicate)
+ (op2, insn_data[icode].operand[2].mode))
+ op2 = copy_to_mode_reg (insn_data[icode].operand[2].mode, op2);
+
+ if (! (*insn_data[icode].operand[3].predicate)
+ (op3, insn_data[icode].operand[3].mode))
+ op3 = copy_to_mode_reg (insn_data[icode].operand[3].mode, op3);
+
+ /* Everything should now be in the suitable form, so emit the compare insn
+ and then the conditional move. */
+
+ comparison
+ = compare_from_rtx (op0, op1, code, unsignedp, cmode, NULL_RTX);
+
+ /* ??? Watch for const0_rtx (nop) and const_true_rtx (unconditional)? */
+ /* We can get const0_rtx or const_true_rtx in some circumstances. Just
+ return NULL and let the caller figure out how best to deal with this
+ situation. */
+ if (GET_CODE (comparison) != code)
+ return NULL_RTX;
+
+ insn = GEN_FCN (icode) (subtarget, comparison, op2, op3);
+
+ /* If that failed, then give up. */
+ if (insn == 0)
+ return 0;
+
+ emit_insn (insn);
+
+ if (subtarget != target)
+ convert_move (target, subtarget, 0);
+
+ return target;
+}
\f
-/* These functions generate an insn body and return it
- rather than emitting the insn.
+/* These functions attempt to generate an insn body, rather than
+ emitting the insn, but if the gen function already emits them, we
+ make no attempt to turn them back into naked patterns.
They do not protect from queued increments,
because they may be used 1) in protect_from_queue itself
/* Generate and return an insn body to add Y to X. */
rtx
-gen_add2_insn (x, y)
- rtx x, y;
+gen_add2_insn (rtx x, rtx y)
{
- int icode = (int) add_optab->handlers[(int) GET_MODE (x)].insn_code;
+ int icode = (int) add_optab->handlers[(int) GET_MODE (x)].insn_code;
if (! ((*insn_data[icode].operand[0].predicate)
(x, insn_data[icode].operand[0].mode))
/* 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;
+gen_add3_insn (rtx r0, rtx r1, rtx c)
{
int icode = (int) add_optab->handlers[(int) GET_MODE (r0)].insn_code;
- if (icode == CODE_FOR_nothing
+ if (icode == CODE_FOR_nothing
|| ! ((*insn_data[icode].operand[0].predicate)
(r0, insn_data[icode].operand[0].mode))
|| ! ((*insn_data[icode].operand[1].predicate)
}
int
-have_add2_insn (x, y)
- rtx x, y;
+have_add2_insn (rtx x, rtx y)
{
int icode;
if (GET_MODE (x) == VOIDmode)
abort ();
- icode = (int) add_optab->handlers[(int) GET_MODE (x)].insn_code;
+ icode = (int) add_optab->handlers[(int) GET_MODE (x)].insn_code;
if (icode == CODE_FOR_nothing)
return 0;
/* Generate and return an insn body to subtract Y from X. */
rtx
-gen_sub2_insn (x, y)
- rtx x, y;
+gen_sub2_insn (rtx x, rtx y)
{
- int icode = (int) sub_optab->handlers[(int) GET_MODE (x)].insn_code;
+ int icode = (int) sub_optab->handlers[(int) GET_MODE (x)].insn_code;
if (! ((*insn_data[icode].operand[0].predicate)
(x, insn_data[icode].operand[0].mode))
/* 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;
+gen_sub3_insn (rtx r0, rtx r1, rtx c)
{
int icode = (int) sub_optab->handlers[(int) GET_MODE (r0)].insn_code;
- if (icode == CODE_FOR_nothing
+ if (icode == CODE_FOR_nothing
|| ! ((*insn_data[icode].operand[0].predicate)
(r0, insn_data[icode].operand[0].mode))
|| ! ((*insn_data[icode].operand[1].predicate)
}
int
-have_sub2_insn (x, y)
- rtx x, y;
+have_sub2_insn (rtx x, rtx y)
{
int icode;
if (GET_MODE (x) == VOIDmode)
abort ();
- icode = (int) sub_optab->handlers[(int) GET_MODE (x)].insn_code;
+ icode = (int) sub_optab->handlers[(int) GET_MODE (x)].insn_code;
if (icode == CODE_FOR_nothing)
return 0;
}
/* Generate the body of an instruction to copy Y into X.
- It may be a SEQUENCE, if one insn isn't enough. */
+ It may be a list of insns, if one insn isn't enough. */
rtx
-gen_move_insn (x, y)
- rtx x, y;
+gen_move_insn (rtx x, rtx y)
{
- register enum machine_mode mode = GET_MODE (x);
- enum insn_code insn_code;
rtx seq;
- if (mode == VOIDmode)
- mode = GET_MODE (y);
-
- insn_code = mov_optab->handlers[(int) mode].insn_code;
-
- /* Handle MODE_CC modes: If we don't have a special move insn for this mode,
- find a mode to do it in. If we have a movcc, use it. Otherwise,
- find the MODE_INT mode of the same width. */
-
- if (GET_MODE_CLASS (mode) == MODE_CC && insn_code == CODE_FOR_nothing)
- {
- enum machine_mode tmode = VOIDmode;
- rtx x1 = x, y1 = y;
-
- if (mode != CCmode
- && mov_optab->handlers[(int) CCmode].insn_code != CODE_FOR_nothing)
- tmode = CCmode;
- else
- for (tmode = QImode; tmode != VOIDmode;
- tmode = GET_MODE_WIDER_MODE (tmode))
- if (GET_MODE_SIZE (tmode) == GET_MODE_SIZE (mode))
- break;
-
- if (tmode == VOIDmode)
- abort ();
-
- /* Get X and Y in TMODE. We can't use gen_lowpart here because it
- may call change_address which is not appropriate if we were
- called when a reload was in progress. We don't have to worry
- about changing the address since the size in bytes is supposed to
- be the same. Copy the MEM to change the mode and move any
- substitutions from the old MEM to the new one. */
-
- if (reload_in_progress)
- {
- x = gen_lowpart_common (tmode, x1);
- if (x == 0 && GET_CODE (x1) == MEM)
- {
- 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 = adjust_address_nv (y1, tmode, 0);
- copy_replacements (y1, y);
- }
- }
- else
- {
- x = gen_lowpart (tmode, x);
- y = gen_lowpart (tmode, y);
- }
-
- insn_code = mov_optab->handlers[(int) tmode].insn_code;
- return (GEN_FCN (insn_code) (x, y));
- }
-
start_sequence ();
emit_move_insn_1 (x, y);
- seq = gen_sequence ();
+ seq = get_insns ();
end_sequence ();
return seq;
}
no such operation exists, CODE_FOR_nothing will be returned. */
enum insn_code
-can_extend_p (to_mode, from_mode, unsignedp)
- enum machine_mode to_mode, from_mode;
- int unsignedp;
+can_extend_p (enum machine_mode to_mode, enum machine_mode from_mode,
+ int unsignedp)
{
+ convert_optab tab;
#ifdef HAVE_ptr_extend
if (unsignedp < 0)
return CODE_FOR_ptr_extend;
- else
#endif
- return extendtab[(int) to_mode][(int) from_mode][unsignedp != 0];
+
+ tab = unsignedp ? zext_optab : sext_optab;
+ return tab->handlers[to_mode][from_mode].insn_code;
}
/* Generate the body of an insn to extend Y (with mode MFROM)
into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
rtx
-gen_extend_insn (x, y, mto, mfrom, unsignedp)
- rtx x, y;
- enum machine_mode mto, mfrom;
- int unsignedp;
+gen_extend_insn (rtx x, rtx y, enum machine_mode mto,
+ enum machine_mode mfrom, int unsignedp)
{
- return (GEN_FCN (extendtab[(int) mto][(int) mfrom][unsignedp != 0]) (x, y));
+ enum insn_code icode = can_extend_p (mto, mfrom, unsignedp);
+ return GEN_FCN (icode) (x, y);
}
\f
/* can_fix_p and can_float_p say whether the target machine
an explicit FTRUNC insn before the fix insn; otherwise 0. */
static enum insn_code
-can_fix_p (fixmode, fltmode, unsignedp, truncp_ptr)
- enum machine_mode fltmode, fixmode;
- int unsignedp;
- int *truncp_ptr;
+can_fix_p (enum machine_mode fixmode, enum machine_mode fltmode,
+ int unsignedp, int *truncp_ptr)
{
- *truncp_ptr = 0;
- if (fixtrunctab[(int) fltmode][(int) fixmode][unsignedp != 0]
- != CODE_FOR_nothing)
- return fixtrunctab[(int) fltmode][(int) fixmode][unsignedp != 0];
+ convert_optab tab;
+ enum insn_code icode;
- if (ftrunc_optab->handlers[(int) fltmode].insn_code != CODE_FOR_nothing)
+ tab = unsignedp ? ufixtrunc_optab : sfixtrunc_optab;
+ icode = tab->handlers[fixmode][fltmode].insn_code;
+ if (icode != CODE_FOR_nothing)
+ {
+ *truncp_ptr = 0;
+ return icode;
+ }
+
+ tab = unsignedp ? ufix_optab : sfix_optab;
+ icode = tab->handlers[fixmode][fltmode].insn_code;
+ if (icode != CODE_FOR_nothing
+ && ftrunc_optab->handlers[fltmode].insn_code != CODE_FOR_nothing)
{
*truncp_ptr = 1;
- return fixtab[(int) fltmode][(int) fixmode][unsignedp != 0];
+ return icode;
}
+
+ *truncp_ptr = 0;
return CODE_FOR_nothing;
}
static enum insn_code
-can_float_p (fltmode, fixmode, unsignedp)
- enum machine_mode fixmode, fltmode;
- int unsignedp;
+can_float_p (enum machine_mode fltmode, enum machine_mode fixmode,
+ int unsignedp)
{
- return floattab[(int) fltmode][(int) fixmode][unsignedp != 0];
+ convert_optab tab;
+
+ tab = unsignedp ? ufloat_optab : sfloat_optab;
+ return tab->handlers[fltmode][fixmode].insn_code;
}
\f
/* Generate code to convert FROM to floating point
if it is negative. */
void
-expand_float (to, from, unsignedp)
- rtx to, from;
- int unsignedp;
+expand_float (rtx to, rtx from, 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. */
wider mode. If the integer mode is wider than the mode of FROM,
we can do the conversion signed even if the input is unsigned. */
- for (imode = GET_MODE (from); imode != VOIDmode;
- imode = GET_MODE_WIDER_MODE (imode))
- for (fmode = GET_MODE (to); fmode != VOIDmode;
- fmode = GET_MODE_WIDER_MODE (fmode))
+ for (fmode = GET_MODE (to); fmode != VOIDmode;
+ fmode = GET_MODE_WIDER_MODE (fmode))
+ for (imode = GET_MODE (from); imode != VOIDmode;
+ imode = GET_MODE_WIDER_MODE (imode))
{
int doing_unsigned = unsignedp;
convert_move (to, target, 0);
return;
}
- }
-
-#if !defined (REAL_IS_NOT_DOUBLE) || defined (REAL_ARITHMETIC)
+ }
/* Unsigned integer, and no way to convert directly.
Convert as signed, then conditionally adjust the result. */
rtx temp1;
rtx neglabel = gen_label_rtx ();
- /* Don't use TARGET if it isn't a register, is a hard register,
+ /* Don't use TARGET if it isn't a register, is a hard register,
or is the wrong mode. */
if (GET_CODE (target) != REG
|| REGNO (target) < FIRST_PSEUDO_REGISTER
/* Test whether the sign bit is set. */
emit_cmp_and_jump_insns (from, const0_rtx, LT, NULL_RTX, imode,
- 0, 0, neglabel);
+ 0, neglabel);
/* The sign bit is not set. Convert as signed. */
expand_float (target, from, 0);
NULL_RTX, 1, OPTAB_LIB_WIDEN);
temp1 = expand_shift (RSHIFT_EXPR, imode, from, integer_one_node,
NULL_RTX, 1);
- temp = expand_binop (imode, ior_optab, temp, temp1, temp, 1,
+ temp = expand_binop (imode, ior_optab, temp, temp1, temp, 1,
OPTAB_LIB_WIDEN);
expand_float (target, temp, 0);
/* Multiply by 2 to undo the shift above. */
temp = expand_binop (fmode, add_optab, target, target,
- target, 0, OPTAB_LIB_WIDEN);
+ target, 0, OPTAB_LIB_WIDEN);
if (temp != target)
emit_move_insn (target, temp);
do_pending_stack_adjust ();
emit_cmp_and_jump_insns (from, const0_rtx, GE, NULL_RTX, GET_MODE (from),
- 0, 0, label);
+ 0, label);
- /* On SCO 3.2.1, ldexp rejects values outside [0.5, 1).
- Rather than setting up a dconst_dot_5, let's hope SCO
- fixes the bug. */
- offset = REAL_VALUE_LDEXP (dconst1, GET_MODE_BITSIZE (GET_MODE (from)));
+
+ real_2expN (&offset, GET_MODE_BITSIZE (GET_MODE (from)));
temp = expand_binop (fmode, add_optab, target,
CONST_DOUBLE_FROM_REAL_VALUE (offset, fmode),
target, 0, OPTAB_LIB_WIDEN);
emit_label (label);
goto done;
}
-#endif
- /* No hardware instruction available; call a library routine to convert from
- SImode, DImode, or TImode into SFmode, DFmode, XFmode, or TFmode. */
+ /* No hardware instruction available; call a library routine. */
{
- rtx libfcn;
+ rtx libfunc;
rtx insns;
rtx value;
+ convert_optab tab = unsignedp ? ufloat_optab : sfloat_optab;
to = protect_from_queue (to, 1);
from = protect_from_queue (from, 0);
if (flag_force_mem)
from = force_not_mem (from);
- if (GET_MODE (to) == SFmode)
- {
- if (GET_MODE (from) == SImode)
- libfcn = floatsisf_libfunc;
- else if (GET_MODE (from) == DImode)
- libfcn = floatdisf_libfunc;
- else if (GET_MODE (from) == TImode)
- libfcn = floattisf_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (to) == DFmode)
- {
- if (GET_MODE (from) == SImode)
- libfcn = floatsidf_libfunc;
- else if (GET_MODE (from) == DImode)
- libfcn = floatdidf_libfunc;
- else if (GET_MODE (from) == TImode)
- libfcn = floattidf_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (to) == XFmode)
- {
- if (GET_MODE (from) == SImode)
- libfcn = floatsixf_libfunc;
- else if (GET_MODE (from) == DImode)
- libfcn = floatdixf_libfunc;
- else if (GET_MODE (from) == TImode)
- libfcn = floattixf_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (to) == TFmode)
- {
- if (GET_MODE (from) == SImode)
- libfcn = floatsitf_libfunc;
- else if (GET_MODE (from) == DImode)
- libfcn = floatditf_libfunc;
- else if (GET_MODE (from) == TImode)
- libfcn = floattitf_libfunc;
- else
- abort ();
- }
- else
+ libfunc = tab->handlers[GET_MODE (to)][GET_MODE (from)].libfunc;
+ if (!libfunc)
abort ();
start_sequence ();
- value = emit_library_call_value (libfcn, NULL_RTX, LCT_CONST,
+ value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST,
GET_MODE (to), 1, from,
GET_MODE (from));
insns = get_insns ();
and store in TO. FROM must be floating point. */
static rtx
-ftruncify (x)
- rtx x;
+ftruncify (rtx x)
{
rtx temp = gen_reg_rtx (GET_MODE (x));
return expand_unop (GET_MODE (x), ftrunc_optab, x, temp, 0);
}
void
-expand_fix (to, from, unsignedp)
- register rtx to, from;
- int unsignedp;
+expand_fix (rtx to, rtx 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;
/* We first try to find a pair of modes, one real and one integer, at
least as wide as FROM and TO, respectively, in which we can open-code
this conversion. If the integer mode is wider than the mode of TO,
we can do the conversion either signed or unsigned. */
- for (imode = GET_MODE (to); imode != VOIDmode;
- imode = GET_MODE_WIDER_MODE (imode))
- for (fmode = GET_MODE (from); fmode != VOIDmode;
- fmode = GET_MODE_WIDER_MODE (fmode))
+ for (fmode = GET_MODE (from); fmode != VOIDmode;
+ fmode = GET_MODE_WIDER_MODE (fmode))
+ for (imode = GET_MODE (to); imode != VOIDmode;
+ imode = GET_MODE_WIDER_MODE (imode))
{
int doing_unsigned = unsignedp;
}
}
-#if !defined (REAL_IS_NOT_DOUBLE) || defined (REAL_ARITHMETIC)
/* For an unsigned conversion, there is one more way to do it.
If we have a signed conversion, we generate code that compares
the real value to the largest representable positive number. If if
one plus the highest signed number, convert, and add it back.
We only need to check all real modes, since we know we didn't find
- anything with a wider integer mode. */
+ 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
+ into DImode.
+
+ The hot path trought 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)
+ 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))
- /* Make sure we won't lose significant bits doing this. */
- if (GET_MODE_BITSIZE (fmode) > GET_MODE_BITSIZE (GET_MODE (to))
- && 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))
{
int bitsize;
REAL_VALUE_TYPE offset;
rtx limit, lab1, lab2, insn;
bitsize = GET_MODE_BITSIZE (GET_MODE (to));
- offset = REAL_VALUE_LDEXP (dconst1, bitsize - 1);
+ real_2expN (&offset, bitsize - 1);
limit = CONST_DOUBLE_FROM_REAL_VALUE (offset, fmode);
lab1 = gen_label_rtx ();
lab2 = gen_label_rtx ();
/* See if we need to do the subtraction. */
do_pending_stack_adjust ();
emit_cmp_and_jump_insns (from, limit, GE, NULL_RTX, GET_MODE (from),
- 0, 0, lab1);
+ 0, lab1);
/* If not, do the signed "fix" and branch around fixup code. */
expand_fix (to, from, 0);
NULL_RTX, 0, OPTAB_LIB_WIDEN);
expand_fix (to, target, 0);
target = expand_binop (GET_MODE (to), xor_optab, to,
- GEN_INT (trunc_int_for_mode
- ((HOST_WIDE_INT) 1 << (bitsize - 1),
- GET_MODE (to))),
+ gen_int_mode
+ ((HOST_WIDE_INT) 1 << (bitsize - 1),
+ GET_MODE (to)),
to, 1, OPTAB_LIB_WIDEN);
if (target != to)
return;
}
-#endif
/* We can't do it with an insn, so use a library call. But first ensure
that the mode of TO is at least as wide as SImode, since those are the
expand_fix (target, from, unsignedp);
}
- else if (GET_MODE (from) == SFmode)
- {
- if (GET_MODE (to) == SImode)
- libfcn = unsignedp ? fixunssfsi_libfunc : fixsfsi_libfunc;
- else if (GET_MODE (to) == DImode)
- libfcn = unsignedp ? fixunssfdi_libfunc : fixsfdi_libfunc;
- else if (GET_MODE (to) == TImode)
- libfcn = unsignedp ? fixunssfti_libfunc : fixsfti_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (from) == DFmode)
- {
- if (GET_MODE (to) == SImode)
- libfcn = unsignedp ? fixunsdfsi_libfunc : fixdfsi_libfunc;
- else if (GET_MODE (to) == DImode)
- libfcn = unsignedp ? fixunsdfdi_libfunc : fixdfdi_libfunc;
- else if (GET_MODE (to) == TImode)
- libfcn = unsignedp ? fixunsdfti_libfunc : fixdfti_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (from) == XFmode)
- {
- if (GET_MODE (to) == SImode)
- libfcn = unsignedp ? fixunsxfsi_libfunc : fixxfsi_libfunc;
- else if (GET_MODE (to) == DImode)
- libfcn = unsignedp ? fixunsxfdi_libfunc : fixxfdi_libfunc;
- else if (GET_MODE (to) == TImode)
- libfcn = unsignedp ? fixunsxfti_libfunc : fixxfti_libfunc;
- else
- abort ();
- }
- else if (GET_MODE (from) == TFmode)
- {
- if (GET_MODE (to) == SImode)
- libfcn = unsignedp ? fixunstfsi_libfunc : fixtfsi_libfunc;
- else if (GET_MODE (to) == DImode)
- libfcn = unsignedp ? fixunstfdi_libfunc : fixtfdi_libfunc;
- else if (GET_MODE (to) == TImode)
- libfcn = unsignedp ? fixunstfti_libfunc : fixtfti_libfunc;
- else
- abort ();
- }
else
- abort ();
-
- if (libfcn)
{
rtx insns;
rtx value;
+ rtx libfunc;
+
+ convert_optab tab = unsignedp ? ufix_optab : sfix_optab;
+ libfunc = tab->handlers[GET_MODE (to)][GET_MODE (from)].libfunc;
+ if (!libfunc)
+ abort ();
to = protect_from_queue (to, 1);
from = protect_from_queue (from, 0);
start_sequence ();
- value = emit_library_call_value (libfcn, NULL_RTX, LCT_CONST,
+ value = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST,
GET_MODE (to), 1, from,
GET_MODE (from));
insns = get_insns ();
gen_rtx_fmt_e (unsignedp ? UNSIGNED_FIX : FIX,
GET_MODE (to), from));
}
-
+
if (target != to)
{
if (GET_MODE (to) == GET_MODE (target))
/* 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;
+have_insn_for (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
/* Create a blank optab. */
static optab
-new_optab ()
+new_optab (void)
{
int i;
- optab op = (optab) xmalloc (sizeof (struct optab));
+ optab op = ggc_alloc (sizeof (struct optab));
for (i = 0; i < NUM_MACHINE_MODES; i++)
{
op->handlers[i].insn_code = CODE_FOR_nothing;
return op;
}
+static convert_optab
+new_convert_optab (void)
+{
+ int i, j;
+ convert_optab op = ggc_alloc (sizeof (struct convert_optab));
+ for (i = 0; i < NUM_MACHINE_MODES; i++)
+ for (j = 0; j < NUM_MACHINE_MODES; j++)
+ {
+ op->handlers[i][j].insn_code = CODE_FOR_nothing;
+ op->handlers[i][j].libfunc = 0;
+ }
+ 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;
+init_optab (enum rtx_code code)
{
optab op = new_optab ();
op->code = code;
/* 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;
+init_optabv (enum rtx_code code)
{
optab op = new_optab ();
op->code = code;
return op;
}
+/* Conversion optabs never go in the code_to_optab table. */
+static inline convert_optab
+init_convert_optab (enum rtx_code code)
+{
+ convert_optab op = new_convert_optab ();
+ op->code = code;
+ return op;
+}
+
/* Initialize the libfunc fields of an entire group of entries in some
optab. Each entry is set equal to a string consisting of a leading
pair of underscores followed by a generic operation name followed by
- a mode name (downshifted to lower case) followed by a single character
+ a mode name (downshifted to lowercase) followed by a single character
representing the number of operands for the given operation (which is
usually one of the characters '2', '3', or '4').
*/
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;
+init_libfuncs (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++ = '_';
*p = '\0';
optable->handlers[(int) mode].libfunc
- = gen_rtx_SYMBOL_REF (Pmode, ggc_alloc_string (libfunc_name,
- p - libfunc_name));
+ = init_one_libfunc (ggc_alloc_string (libfunc_name, p - libfunc_name));
}
}
routine. (See above). */
static void
-init_integral_libfuncs (optable, opname, suffix)
- register optab optable;
- register const char *opname;
- register int suffix;
+init_integral_libfuncs (optab optable, const char *opname, int suffix)
{
- init_libfuncs (optable, SImode, TImode, opname, suffix);
+ int maxsize = 2*BITS_PER_WORD;
+ if (maxsize < LONG_LONG_TYPE_SIZE)
+ maxsize = LONG_LONG_TYPE_SIZE;
+ init_libfuncs (optable, word_mode,
+ mode_for_size (maxsize, MODE_INT, 0),
+ opname, suffix);
}
/* Initialize the libfunc fields of an entire group of entries in some
routine. (See above). */
static void
-init_floating_libfuncs (optable, opname, suffix)
- register optab optable;
- register const char *opname;
- register int suffix;
+init_floating_libfuncs (optab optable, const char *opname, int suffix)
+{
+ init_libfuncs (optable, MIN_MODE_FLOAT, MAX_MODE_FLOAT, opname, suffix);
+}
+
+/* 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
+ a mode name and an operand count these functions have two mode names
+ and no operand count. */
+static void
+init_interclass_conv_libfuncs (convert_optab tab, const char *opname,
+ enum mode_class from_class,
+ enum mode_class to_class)
{
- init_libfuncs (optable, SFmode, TFmode, opname, suffix);
+ enum machine_mode first_from_mode = GET_CLASS_NARROWEST_MODE (from_class);
+ enum machine_mode first_to_mode = GET_CLASS_NARROWEST_MODE (to_class);
+ size_t opname_len = strlen (opname);
+ size_t max_mname_len = 0;
+
+ enum machine_mode fmode, tmode;
+ const char *fname, *tname;
+ const char *q;
+ char *libfunc_name, *suffix;
+ char *p;
+
+ for (fmode = first_from_mode;
+ fmode != VOIDmode;
+ fmode = GET_MODE_WIDER_MODE (fmode))
+ max_mname_len = MAX (max_mname_len, strlen (GET_MODE_NAME (fmode)));
+
+ for (tmode = first_to_mode;
+ tmode != VOIDmode;
+ tmode = GET_MODE_WIDER_MODE (tmode))
+ max_mname_len = MAX (max_mname_len, strlen (GET_MODE_NAME (tmode)));
+
+ libfunc_name = alloca (2 + opname_len + 2*max_mname_len + 1 + 1);
+ libfunc_name[0] = '_';
+ libfunc_name[1] = '_';
+ memcpy (&libfunc_name[2], opname, opname_len);
+ suffix = libfunc_name + opname_len + 2;
+
+ for (fmode = first_from_mode; fmode != VOIDmode;
+ fmode = GET_MODE_WIDER_MODE (fmode))
+ for (tmode = first_to_mode; tmode != VOIDmode;
+ tmode = GET_MODE_WIDER_MODE (tmode))
+ {
+ fname = GET_MODE_NAME (fmode);
+ tname = GET_MODE_NAME (tmode);
+
+ p = suffix;
+ for (q = fname; *q; p++, q++)
+ *p = TOLOWER (*q);
+ for (q = tname; *q; p++, q++)
+ *p = TOLOWER (*q);
+
+ *p = '\0';
+
+ tab->handlers[tmode][fmode].libfunc
+ = init_one_libfunc (ggc_alloc_string (libfunc_name,
+ p - libfunc_name));
+ }
}
+/* Initialize the libfunc fields of an entire group of entries of an
+ intra-mode-class conversion optab. The string formation rules are
+ similar to the ones for init_libfunc, above. WIDENING says whether
+ the optab goes from narrow to wide modes or vice versa. These functions
+ have two mode names _and_ an operand count. */
+static void
+init_intraclass_conv_libfuncs (convert_optab tab, const char *opname,
+ enum mode_class class, bool widening)
+{
+ enum machine_mode first_mode = GET_CLASS_NARROWEST_MODE (class);
+ size_t opname_len = strlen (opname);
+ size_t max_mname_len = 0;
+
+ enum machine_mode nmode, wmode;
+ const char *nname, *wname;
+ const char *q;
+ char *libfunc_name, *suffix;
+ char *p;
+
+ for (nmode = first_mode; nmode != VOIDmode;
+ nmode = GET_MODE_WIDER_MODE (nmode))
+ max_mname_len = MAX (max_mname_len, strlen (GET_MODE_NAME (nmode)));
+
+ libfunc_name = alloca (2 + opname_len + 2*max_mname_len + 1 + 1);
+ libfunc_name[0] = '_';
+ libfunc_name[1] = '_';
+ memcpy (&libfunc_name[2], opname, opname_len);
+ suffix = libfunc_name + opname_len + 2;
+
+ for (nmode = first_mode; nmode != VOIDmode;
+ nmode = GET_MODE_WIDER_MODE (nmode))
+ for (wmode = GET_MODE_WIDER_MODE (nmode); wmode != VOIDmode;
+ wmode = GET_MODE_WIDER_MODE (wmode))
+ {
+ nname = GET_MODE_NAME (nmode);
+ wname = GET_MODE_NAME (wmode);
+
+ p = suffix;
+ for (q = widening ? nname : wname; *q; p++, q++)
+ *p = TOLOWER (*q);
+ for (q = widening ? wname : nname; *q; p++, q++)
+ *p = TOLOWER (*q);
+
+ *p++ = '2';
+ *p = '\0';
+
+ tab->handlers[widening ? wmode : nmode]
+ [widening ? nmode : wmode].libfunc
+ = init_one_libfunc (ggc_alloc_string (libfunc_name,
+ p - libfunc_name));
+ }
+}
+
+
rtx
-init_one_libfunc (name)
- register const char *name;
+init_one_libfunc (const char *name)
{
- /* Create a FUNCTION_DECL that can be passed to ENCODE_SECTION_INFO. */
+ rtx symbol;
+
+ /* Create a FUNCTION_DECL that can be passed to
+ targetm.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),
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
- /* Return the symbol_ref from the mem rtx. */
- return XEXP (DECL_RTL (decl), 0);
-}
+ symbol = XEXP (DECL_RTL (decl), 0);
-/* Mark ARG (which is really an OPTAB *) for GC. */
+ /* Zap the nonsensical SYMBOL_REF_DECL for this. What we're left with
+ are the flags assigned by targetm.encode_section_info. */
+ SYMBOL_REF_DECL (symbol) = 0;
+
+ return symbol;
+}
+/* Call this to reset the function entry for one optab (OPTABLE) in mode
+ MODE to NAME, which should be either 0 or a string constant. */
void
-mark_optab (arg)
- void *arg;
+set_optab_libfunc (optab optable, enum machine_mode mode, const char *name)
{
- optab o = *(optab *) arg;
- int i;
+ if (name)
+ optable->handlers[mode].libfunc = init_one_libfunc (name);
+ else
+ optable->handlers[mode].libfunc = 0;
+}
- for (i = 0; i < NUM_MACHINE_MODES; ++i)
- ggc_mark_rtx (o->handlers[i].libfunc);
+/* Call this to reset the function entry for one conversion optab
+ (OPTABLE) from mode FMODE to mode TMODE to NAME, which should be
+ either 0 or a string constant. */
+void
+set_conv_libfunc (convert_optab optable, enum machine_mode tmode,
+ enum machine_mode fmode, const char *name)
+{
+ if (name)
+ optable->handlers[tmode][fmode].libfunc = init_one_libfunc (name);
+ else
+ optable->handlers[tmode][fmode].libfunc = 0;
}
/* Call this once to initialize the contents of the optabs
appropriately for the current target machine. */
void
-init_optabs ()
+init_optabs (void)
{
- unsigned int i, j, k;
+ unsigned int i;
/* Start by initializing all tables to contain CODE_FOR_nothing. */
- for (i = 0; i < ARRAY_SIZE (fixtab); i++)
- for (j = 0; j < ARRAY_SIZE (fixtab[0]); j++)
- for (k = 0; k < ARRAY_SIZE (fixtab[0][0]); k++)
- fixtab[i][j][k] = CODE_FOR_nothing;
-
- for (i = 0; i < ARRAY_SIZE (fixtrunctab); i++)
- for (j = 0; j < ARRAY_SIZE (fixtrunctab[0]); j++)
- for (k = 0; k < ARRAY_SIZE (fixtrunctab[0][0]); k++)
- fixtrunctab[i][j][k] = CODE_FOR_nothing;
-
- for (i = 0; i < ARRAY_SIZE (floattab); i++)
- for (j = 0; j < ARRAY_SIZE (floattab[0]); j++)
- for (k = 0; k < ARRAY_SIZE (floattab[0][0]); k++)
- floattab[i][j][k] = CODE_FOR_nothing;
-
- for (i = 0; i < ARRAY_SIZE (extendtab); i++)
- for (j = 0; j < ARRAY_SIZE (extendtab[0]); j++)
- for (k = 0; k < ARRAY_SIZE (extendtab[0][0]); k++)
- extendtab[i][j][k] = CODE_FOR_nothing;
-
for (i = 0; i < NUM_RTX_CODE; i++)
setcc_gen_code[i] = CODE_FOR_nothing;
smax_optab = init_optab (SMAX);
umin_optab = init_optab (UMIN);
umax_optab = init_optab (UMAX);
+ pow_optab = init_optab (UNKNOWN);
+ atan2_optab = init_optab (UNKNOWN);
/* These three have codes assigned exclusively for the sake of
have_insn_for. */
ucmp_optab = init_optab (UNKNOWN);
tst_optab = init_optab (UNKNOWN);
+
+ eq_optab = init_optab (EQ);
+ ne_optab = init_optab (NE);
+ gt_optab = init_optab (GT);
+ ge_optab = init_optab (GE);
+ lt_optab = init_optab (LT);
+ le_optab = init_optab (LE);
+ unord_optab = init_optab (UNORDERED);
+
neg_optab = init_optab (NEG);
negv_optab = init_optabv (NEG);
abs_optab = init_optab (ABS);
absv_optab = init_optabv (ABS);
+ addcc_optab = init_optab (UNKNOWN);
one_cmpl_optab = init_optab (NOT);
ffs_optab = init_optab (FFS);
+ clz_optab = init_optab (CLZ);
+ ctz_optab = init_optab (CTZ);
+ popcount_optab = init_optab (POPCOUNT);
+ parity_optab = init_optab (PARITY);
sqrt_optab = init_optab (SQRT);
+ floor_optab = init_optab (UNKNOWN);
+ ceil_optab = init_optab (UNKNOWN);
+ round_optab = init_optab (UNKNOWN);
+ btrunc_optab = init_optab (UNKNOWN);
+ nearbyint_optab = init_optab (UNKNOWN);
sin_optab = init_optab (UNKNOWN);
cos_optab = init_optab (UNKNOWN);
+ exp_optab = init_optab (UNKNOWN);
+ log_optab = init_optab (UNKNOWN);
+ tan_optab = init_optab (UNKNOWN);
+ atan_optab = init_optab (UNKNOWN);
strlen_optab = init_optab (UNKNOWN);
cbranch_optab = init_optab (UNKNOWN);
cmov_optab = init_optab (UNKNOWN);
cstore_optab = init_optab (UNKNOWN);
push_optab = init_optab (UNKNOWN);
+ vec_extract_optab = init_optab (UNKNOWN);
+ vec_set_optab = init_optab (UNKNOWN);
+ vec_init_optab = init_optab (UNKNOWN);
+ /* Conversions. */
+ sext_optab = init_convert_optab (SIGN_EXTEND);
+ zext_optab = init_convert_optab (ZERO_EXTEND);
+ trunc_optab = init_convert_optab (TRUNCATE);
+ sfix_optab = init_convert_optab (FIX);
+ ufix_optab = init_convert_optab (UNSIGNED_FIX);
+ sfixtrunc_optab = init_convert_optab (UNKNOWN);
+ ufixtrunc_optab = init_convert_optab (UNKNOWN);
+ sfloat_optab = init_convert_optab (FLOAT);
+ ufloat_optab = init_convert_optab (UNSIGNED_FLOAT);
+
for (i = 0; i < NUM_MACHINE_MODES; i++)
{
movstr_optab[i] = CODE_FOR_nothing;
clrstr_optab[i] = CODE_FOR_nothing;
+ cmpstr_optab[i] = CODE_FOR_nothing;
+ cmpmem_optab[i] = CODE_FOR_nothing;
#ifdef HAVE_SECONDARY_RELOADS
reload_in_optab[i] = reload_out_optab[i] = CODE_FOR_nothing;
/* Fill in the optabs with the insns we support. */
init_all_optabs ();
-#ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC
- /* This flag says the same insns that convert to a signed fixnum
- also convert validly to an unsigned one. */
- for (i = 0; i < NUM_MACHINE_MODES; i++)
- for (j = 0; j < NUM_MACHINE_MODES; j++)
- fixtrunctab[i][j][1] = fixtrunctab[i][j][0];
-#endif
-
/* Initialize the optabs with the names of the library functions. */
init_integral_libfuncs (add_optab, "add", '3');
init_floating_libfuncs (add_optab, "add", '3');
init_floating_libfuncs (negv_optab, "neg", '2');
init_integral_libfuncs (one_cmpl_optab, "one_cmpl", '2');
init_integral_libfuncs (ffs_optab, "ffs", '2');
+ init_integral_libfuncs (clz_optab, "clz", '2');
+ init_integral_libfuncs (ctz_optab, "ctz", '2');
+ init_integral_libfuncs (popcount_optab, "popcount", '2');
+ init_integral_libfuncs (parity_optab, "parity", '2');
/* Comparison libcalls for integers MUST come in pairs, signed/unsigned. */
init_integral_libfuncs (cmp_optab, "cmp", '2');
init_integral_libfuncs (ucmp_optab, "ucmp", '2');
init_floating_libfuncs (cmp_optab, "cmp", '2');
-#ifdef MULSI3_LIBCALL
- smul_optab->handlers[(int) SImode].libfunc
- = init_one_libfunc (MULSI3_LIBCALL);
-#endif
-#ifdef MULDI3_LIBCALL
- smul_optab->handlers[(int) DImode].libfunc
- = init_one_libfunc (MULDI3_LIBCALL);
-#endif
-
-#ifdef DIVSI3_LIBCALL
- sdiv_optab->handlers[(int) SImode].libfunc
- = init_one_libfunc (DIVSI3_LIBCALL);
-#endif
-#ifdef DIVDI3_LIBCALL
- sdiv_optab->handlers[(int) DImode].libfunc
- = init_one_libfunc (DIVDI3_LIBCALL);
-#endif
-
-#ifdef UDIVSI3_LIBCALL
- udiv_optab->handlers[(int) SImode].libfunc
- = init_one_libfunc (UDIVSI3_LIBCALL);
-#endif
-#ifdef UDIVDI3_LIBCALL
- udiv_optab->handlers[(int) DImode].libfunc
- = init_one_libfunc (UDIVDI3_LIBCALL);
-#endif
-
-#ifdef MODSI3_LIBCALL
- smod_optab->handlers[(int) SImode].libfunc
- = init_one_libfunc (MODSI3_LIBCALL);
-#endif
-#ifdef MODDI3_LIBCALL
- smod_optab->handlers[(int) DImode].libfunc
- = init_one_libfunc (MODDI3_LIBCALL);
-#endif
-
-#ifdef UMODSI3_LIBCALL
- umod_optab->handlers[(int) SImode].libfunc
- = init_one_libfunc (UMODSI3_LIBCALL);
-#endif
-#ifdef UMODDI3_LIBCALL
- umod_optab->handlers[(int) DImode].libfunc
- = init_one_libfunc (UMODDI3_LIBCALL);
-#endif
-
- /* Use cabs for DC complex abs, since systems generally have cabs.
- Don't define any libcall for SCmode, so that cabs will be used. */
- abs_optab->handlers[(int) DCmode].libfunc
- = init_one_libfunc ("cabs");
+ /* EQ etc are floating point only. */
+ init_floating_libfuncs (eq_optab, "eq", '2');
+ init_floating_libfuncs (ne_optab, "ne", '2');
+ init_floating_libfuncs (gt_optab, "gt", '2');
+ init_floating_libfuncs (ge_optab, "ge", '2');
+ init_floating_libfuncs (lt_optab, "lt", '2');
+ init_floating_libfuncs (le_optab, "le", '2');
+ init_floating_libfuncs (unord_optab, "unord", '2');
+
+ /* Conversions. */
+ init_interclass_conv_libfuncs (sfloat_optab, "float", MODE_INT, MODE_FLOAT);
+ init_interclass_conv_libfuncs (sfix_optab, "fix", MODE_FLOAT, MODE_INT);
+ init_interclass_conv_libfuncs (ufix_optab, "fixuns", MODE_FLOAT, MODE_INT);
+
+ /* sext_optab is also used for FLOAT_EXTEND. */
+ init_intraclass_conv_libfuncs (sext_optab, "extend", MODE_FLOAT, true);
+ init_intraclass_conv_libfuncs (trunc_optab, "trunc", MODE_FLOAT, false);
+
+ /* Use cabs for double complex abs, since systems generally have cabs.
+ Don't define any libcall for float complex, so that cabs will be used. */
+ if (complex_double_type_node)
+ abs_optab->handlers[TYPE_MODE (complex_double_type_node)].libfunc
+ = init_one_libfunc ("cabs");
/* The ffs function operates on `int'. */
ffs_optab->handlers[(int) mode_for_size (INT_TYPE_SIZE, MODE_INT, 0)].libfunc
= init_one_libfunc ("ffs");
- extendsfdf2_libfunc = init_one_libfunc ("__extendsfdf2");
- extendsfxf2_libfunc = init_one_libfunc ("__extendsfxf2");
- extendsftf2_libfunc = init_one_libfunc ("__extendsftf2");
- extenddfxf2_libfunc = init_one_libfunc ("__extenddfxf2");
- extenddftf2_libfunc = init_one_libfunc ("__extenddftf2");
-
- truncdfsf2_libfunc = init_one_libfunc ("__truncdfsf2");
- truncxfsf2_libfunc = init_one_libfunc ("__truncxfsf2");
- trunctfsf2_libfunc = init_one_libfunc ("__trunctfsf2");
- truncxfdf2_libfunc = init_one_libfunc ("__truncxfdf2");
- trunctfdf2_libfunc = init_one_libfunc ("__trunctfdf2");
-
+ abort_libfunc = init_one_libfunc ("abort");
memcpy_libfunc = init_one_libfunc ("memcpy");
memmove_libfunc = init_one_libfunc ("memmove");
bcopy_libfunc = init_one_libfunc ("bcopy");
bcmp_libfunc = init_one_libfunc ("__gcc_bcmp");
memset_libfunc = init_one_libfunc ("memset");
bzero_libfunc = init_one_libfunc ("bzero");
+ setbits_libfunc = init_one_libfunc ("__setbits");
unwind_resume_libfunc = init_one_libfunc (USING_SJLJ_EXCEPTIONS
? "_Unwind_SjLj_Resume"
unwind_sjlj_unregister_libfunc
= init_one_libfunc ("_Unwind_SjLj_Unregister");
- eqhf2_libfunc = init_one_libfunc ("__eqhf2");
- nehf2_libfunc = init_one_libfunc ("__nehf2");
- gthf2_libfunc = init_one_libfunc ("__gthf2");
- gehf2_libfunc = init_one_libfunc ("__gehf2");
- lthf2_libfunc = init_one_libfunc ("__lthf2");
- lehf2_libfunc = init_one_libfunc ("__lehf2");
- unordhf2_libfunc = init_one_libfunc ("__unordhf2");
-
- eqsf2_libfunc = init_one_libfunc ("__eqsf2");
- nesf2_libfunc = init_one_libfunc ("__nesf2");
- gtsf2_libfunc = init_one_libfunc ("__gtsf2");
- gesf2_libfunc = init_one_libfunc ("__gesf2");
- ltsf2_libfunc = init_one_libfunc ("__ltsf2");
- lesf2_libfunc = init_one_libfunc ("__lesf2");
- unordsf2_libfunc = init_one_libfunc ("__unordsf2");
-
- eqdf2_libfunc = init_one_libfunc ("__eqdf2");
- nedf2_libfunc = init_one_libfunc ("__nedf2");
- gtdf2_libfunc = init_one_libfunc ("__gtdf2");
- gedf2_libfunc = init_one_libfunc ("__gedf2");
- ltdf2_libfunc = init_one_libfunc ("__ltdf2");
- ledf2_libfunc = init_one_libfunc ("__ledf2");
- unorddf2_libfunc = init_one_libfunc ("__unorddf2");
-
- eqxf2_libfunc = init_one_libfunc ("__eqxf2");
- nexf2_libfunc = init_one_libfunc ("__nexf2");
- gtxf2_libfunc = init_one_libfunc ("__gtxf2");
- gexf2_libfunc = init_one_libfunc ("__gexf2");
- ltxf2_libfunc = init_one_libfunc ("__ltxf2");
- lexf2_libfunc = init_one_libfunc ("__lexf2");
- unordxf2_libfunc = init_one_libfunc ("__unordxf2");
-
- eqtf2_libfunc = init_one_libfunc ("__eqtf2");
- netf2_libfunc = init_one_libfunc ("__netf2");
- gttf2_libfunc = init_one_libfunc ("__gttf2");
- getf2_libfunc = init_one_libfunc ("__getf2");
- lttf2_libfunc = init_one_libfunc ("__lttf2");
- letf2_libfunc = init_one_libfunc ("__letf2");
- unordtf2_libfunc = init_one_libfunc ("__unordtf2");
-
- floatsisf_libfunc = init_one_libfunc ("__floatsisf");
- floatdisf_libfunc = init_one_libfunc ("__floatdisf");
- floattisf_libfunc = init_one_libfunc ("__floattisf");
-
- floatsidf_libfunc = init_one_libfunc ("__floatsidf");
- floatdidf_libfunc = init_one_libfunc ("__floatdidf");
- floattidf_libfunc = init_one_libfunc ("__floattidf");
-
- floatsixf_libfunc = init_one_libfunc ("__floatsixf");
- floatdixf_libfunc = init_one_libfunc ("__floatdixf");
- floattixf_libfunc = init_one_libfunc ("__floattixf");
-
- floatsitf_libfunc = init_one_libfunc ("__floatsitf");
- floatditf_libfunc = init_one_libfunc ("__floatditf");
- floattitf_libfunc = init_one_libfunc ("__floattitf");
-
- fixsfsi_libfunc = init_one_libfunc ("__fixsfsi");
- fixsfdi_libfunc = init_one_libfunc ("__fixsfdi");
- fixsfti_libfunc = init_one_libfunc ("__fixsfti");
-
- fixdfsi_libfunc = init_one_libfunc ("__fixdfsi");
- fixdfdi_libfunc = init_one_libfunc ("__fixdfdi");
- fixdfti_libfunc = init_one_libfunc ("__fixdfti");
-
- fixxfsi_libfunc = init_one_libfunc ("__fixxfsi");
- fixxfdi_libfunc = init_one_libfunc ("__fixxfdi");
- fixxfti_libfunc = init_one_libfunc ("__fixxfti");
-
- fixtfsi_libfunc = init_one_libfunc ("__fixtfsi");
- fixtfdi_libfunc = init_one_libfunc ("__fixtfdi");
- fixtfti_libfunc = init_one_libfunc ("__fixtfti");
-
- fixunssfsi_libfunc = init_one_libfunc ("__fixunssfsi");
- fixunssfdi_libfunc = init_one_libfunc ("__fixunssfdi");
- fixunssfti_libfunc = init_one_libfunc ("__fixunssfti");
-
- fixunsdfsi_libfunc = init_one_libfunc ("__fixunsdfsi");
- fixunsdfdi_libfunc = init_one_libfunc ("__fixunsdfdi");
- fixunsdfti_libfunc = init_one_libfunc ("__fixunsdfti");
-
- fixunsxfsi_libfunc = init_one_libfunc ("__fixunsxfsi");
- fixunsxfdi_libfunc = init_one_libfunc ("__fixunsxfdi");
- fixunsxfti_libfunc = init_one_libfunc ("__fixunsxfti");
-
- fixunstfsi_libfunc = init_one_libfunc ("__fixunstfsi");
- fixunstfdi_libfunc = init_one_libfunc ("__fixunstfdi");
- fixunstfti_libfunc = init_one_libfunc ("__fixunstfti");
-
- /* For check-memory-usage. */
- chkr_check_addr_libfunc = init_one_libfunc ("chkr_check_addr");
- chkr_set_right_libfunc = init_one_libfunc ("chkr_set_right");
- chkr_copy_bitmap_libfunc = init_one_libfunc ("chkr_copy_bitmap");
- chkr_check_exec_libfunc = init_one_libfunc ("chkr_check_exec");
- chkr_check_str_libfunc = init_one_libfunc ("chkr_check_str");
-
/* For function entry/exit instrumentation. */
profile_function_entry_libfunc
= init_one_libfunc ("__cyg_profile_func_enter");
profile_function_exit_libfunc
= init_one_libfunc ("__cyg_profile_func_exit");
-#ifdef HAVE_conditional_trap
- init_traps ();
-#endif
+ gcov_flush_libfunc = init_one_libfunc ("__gcov_flush");
+ gcov_init_libfunc = init_one_libfunc ("__gcov_init");
-#ifdef INIT_TARGET_OPTABS
- /* Allow the target to add more libcalls or rename some, etc. */
- INIT_TARGET_OPTABS;
-#endif
+ if (HAVE_conditional_trap)
+ trap_rtx = gen_rtx_fmt_ee (EQ, VOIDmode, NULL_RTX, NULL_RTX);
- /* Add these GC roots. */
- ggc_add_root (optab_table, OTI_MAX, sizeof(optab), mark_optab);
- ggc_add_rtx_root (libfunc_table, LTI_MAX);
+ /* Allow the target to add more libcalls or rename some, etc. */
+ targetm.init_libfuncs ();
}
\f
-#ifdef HAVE_conditional_trap
-/* The insn generating function can not take an rtx_code argument.
- TRAP_RTX is used as an rtx argument. Its code is replaced with
- the code to be used in the trap insn and all other fields are
- ignored. */
-static rtx trap_rtx;
-
-static void
-init_traps ()
-{
- if (HAVE_conditional_trap)
- {
- trap_rtx = gen_rtx_fmt_ee (EQ, VOIDmode, NULL_RTX, NULL_RTX);
- ggc_add_rtx_root (&trap_rtx, 1);
- }
-}
-#endif
-
/* Generate insns to trap with code TCODE if OP1 and OP2 satisfy condition
CODE. Return 0 on failure. */
rtx
-gen_cond_trap (code, op1, op2, tcode)
- enum rtx_code code ATTRIBUTE_UNUSED;
- rtx op1, op2 ATTRIBUTE_UNUSED, tcode ATTRIBUTE_UNUSED;
+gen_cond_trap (enum rtx_code code ATTRIBUTE_UNUSED, rtx op1,
+ rtx op2 ATTRIBUTE_UNUSED, rtx tcode ATTRIBUTE_UNUSED)
{
enum machine_mode mode = GET_MODE (op1);
+ enum insn_code icode;
+ rtx insn;
+
+ if (!HAVE_conditional_trap)
+ return 0;
if (mode == VOIDmode)
return 0;
-#ifdef HAVE_conditional_trap
- if (HAVE_conditional_trap
- && cmp_optab->handlers[(int) mode].insn_code != CODE_FOR_nothing)
+ icode = cmp_optab->handlers[(int) mode].insn_code;
+ if (icode == CODE_FOR_nothing)
+ return 0;
+
+ start_sequence ();
+ op1 = prepare_operand (icode, op1, 0, mode, mode, 0);
+ op2 = prepare_operand (icode, op2, 1, mode, mode, 0);
+ if (!op1 || !op2)
{
- rtx insn;
- start_sequence();
- emit_insn (GEN_FCN (cmp_optab->handlers[(int) mode].insn_code) (op1, op2));
- PUT_CODE (trap_rtx, code);
- insn = gen_conditional_trap (trap_rtx, tcode);
- if (insn)
- {
- emit_insn (insn);
- insn = gen_sequence ();
- }
- end_sequence();
- return insn;
+ end_sequence ();
+ return 0;
}
-#endif
+ emit_insn (GEN_FCN (icode) (op1, op2));
- return 0;
+ PUT_CODE (trap_rtx, code);
+ insn = gen_conditional_trap (trap_rtx, tcode);
+ if (insn)
+ {
+ emit_insn (insn);
+ insn = get_insns ();
+ }
+ end_sequence ();
+
+ return insn;
}
+
+#include "gt-optabs.h"
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