/* Xstormy16 target functions.
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
#include "regs.h"
#include "hard-reg-set.h"
#include "tree.h"
#include "expr.h"
#include "optabs.h"
-#include "output.h"
#include "except.h"
#include "function.h"
#include "target.h"
#include "target-def.h"
#include "tm_p.h"
+#include "langhooks.h"
+#include "tree-gimple.h"
+
+static rtx emit_addhi3_postreload (rtx, rtx, rtx);
+static void xstormy16_asm_out_constructor (rtx, int);
+static void xstormy16_asm_out_destructor (rtx, int);
+static void xstormy16_asm_output_mi_thunk (FILE *, tree, HOST_WIDE_INT,
+ HOST_WIDE_INT, tree);
-static rtx emit_addhi3_postreload PARAMS ((rtx, rtx, rtx));
-static void xstormy16_asm_out_constructor PARAMS ((rtx, int));
-static void xstormy16_asm_out_destructor PARAMS ((rtx, int));
+static void xstormy16_init_builtins (void);
+static rtx xstormy16_expand_builtin (tree, rtx, rtx, enum machine_mode, int);
+static bool xstormy16_rtx_costs (rtx, int, int, int *);
+static int xstormy16_address_cost (rtx);
+static bool xstormy16_return_in_memory (tree, tree);
/* Define the information needed to generate branch and scc insns. This is
stored from the compare operation. */
struct rtx_def * xstormy16_compare_op0;
struct rtx_def * xstormy16_compare_op1;
-/* Return 1 if this is a LT, GE, LTU, or GEU operator. */
+/* Compute a (partial) cost for rtx X. Return true if the complete
+ cost has been computed, and false if subexpressions should be
+ scanned. In either case, *TOTAL contains the cost result. */
-int
-xstormy16_ineqsi_operator (op, mode)
- register rtx op;
- enum machine_mode mode;
+static bool
+xstormy16_rtx_costs (rtx x, int code, int outer_code ATTRIBUTE_UNUSED,
+ int *total)
{
- enum rtx_code code = GET_CODE (op);
-
- return ((mode == VOIDmode || GET_MODE (op) == mode)
- && (code == LT || code == GE || code == LTU || code == GEU));
-}
-
-/* Return 1 if this is an EQ or NE operator. */
+ switch (code)
+ {
+ case CONST_INT:
+ if (INTVAL (x) < 16 && INTVAL (x) >= 0)
+ *total = COSTS_N_INSNS (1) / 2;
+ else if (INTVAL (x) < 256 && INTVAL (x) >= 0)
+ *total = COSTS_N_INSNS (1);
+ else
+ *total = COSTS_N_INSNS (2);
+ return true;
+
+ case CONST_DOUBLE:
+ case CONST:
+ case SYMBOL_REF:
+ case LABEL_REF:
+ *total = COSTS_N_INSNS(2);
+ return true;
+
+ case MULT:
+ *total = COSTS_N_INSNS (35 + 6);
+ return true;
+ case DIV:
+ *total = COSTS_N_INSNS (51 - 6);
+ return true;
-int
-equality_operator (op, mode)
- register rtx op;
- enum machine_mode mode;
-{
- return ((mode == VOIDmode || GET_MODE (op) == mode)
- && (GET_CODE (op) == EQ || GET_CODE (op) == NE));
+ default:
+ return false;
+ }
}
-/* Return 1 if this is a comparison operator but not an EQ or NE operator. */
-
-int
-inequality_operator (op, mode)
- register rtx op;
- enum machine_mode mode;
+static int
+xstormy16_address_cost (rtx x)
{
- return comparison_operator (op, mode) && ! equality_operator (op, mode);
+ return (GET_CODE (x) == CONST_INT ? 2
+ : GET_CODE (x) == PLUS ? 7
+ : 5);
}
/* Branches are handled as follows:
/* Emit a branch of kind CODE to location LOC. */
void
-xstormy16_emit_cbranch (code, loc)
- enum rtx_code code;
- rtx loc;
+xstormy16_emit_cbranch (enum rtx_code code, rtx loc)
{
rtx op0 = xstormy16_compare_op0;
rtx op1 = xstormy16_compare_op1;
enum machine_mode mode;
mode = GET_MODE (op0);
- if (mode != HImode && mode != SImode)
- abort ();
+ gcc_assert (mode == HImode || mode == SImode);
if (mode == SImode
&& (code == GT || code == LE || code == GTU || code == LEU))
{
int unsigned_p = (code == GTU || code == LEU);
int gt_p = (code == GT || code == GTU);
- rtx lab;
+ rtx lab = NULL_RTX;
if (gt_p)
lab = gen_label_rtx ();
&& (code == NE || code == EQ)
&& op1 != const0_rtx)
{
- rtx lab;
+ rtx lab = NULL_RTX;
int num_words = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
int i;
op0 = tmp;
}
- condition_rtx = gen_rtx (code, mode, op0, op1);
+ condition_rtx = gen_rtx_fmt_ee (code, mode, op0, op1);
loc_ref = gen_rtx_LABEL_REF (VOIDmode, loc);
branch = gen_rtx_SET (VOIDmode, pc_rtx,
gen_rtx_IF_THEN_ELSE (VOIDmode, condition_rtx,
xstormy16_expand_arith. */
void
-xstormy16_split_cbranch (mode, label, comparison, dest, carry)
- enum machine_mode mode;
- rtx label;
- rtx comparison;
- rtx dest;
- rtx carry;
+xstormy16_split_cbranch (enum machine_mode mode, rtx label, rtx comparison,
+ rtx dest, rtx carry)
{
rtx op0 = XEXP (comparison, 0);
rtx op1 = XEXP (comparison, 1);
- rtx seq;
+ rtx seq, last_insn;
rtx compare;
start_sequence ();
xstormy16_expand_arith (mode, COMPARE, dest, op0, op1, carry);
- seq = gen_sequence ();
+ seq = get_insns ();
end_sequence ();
- compare = SET_SRC (XVECEXP (PATTERN (XVECEXP (seq, 0, XVECLEN (seq, 0) - 1)),
- 0, 0));
+
+ gcc_assert (INSN_P (seq));
+
+ last_insn = seq;
+ while (NEXT_INSN (last_insn) != NULL_RTX)
+ last_insn = NEXT_INSN (last_insn);
+
+ compare = SET_SRC (XVECEXP (PATTERN (last_insn), 0, 0));
PUT_CODE (XEXP (compare, 0), GET_CODE (comparison));
XEXP (compare, 1) = gen_rtx_LABEL_REF (VOIDmode, label);
emit_insn (seq);
OP is the conditional expression, or NULL for branch-always.
- REVERSED is non-zero if we should reverse the sense of the comparison.
+ REVERSED is nonzero if we should reverse the sense of the comparison.
INSN is the insn. */
char *
-xstormy16_output_cbranch_hi (op, label, reversed, insn)
- rtx op;
- const char * label;
- int reversed;
- rtx insn;
+xstormy16_output_cbranch_hi (rtx op, const char *label, int reversed, rtx insn)
{
static char string[64];
int need_longbranch = (op != NULL_RTX
case LEU: ccode = "ls"; break;
default:
- abort ();
+ gcc_unreachable ();
}
if (need_longbranch)
OP is the conditional expression (OP is never NULL_RTX).
- REVERSED is non-zero if we should reverse the sense of the comparison.
+ REVERSED is nonzero if we should reverse the sense of the comparison.
INSN is the insn. */
char *
-xstormy16_output_cbranch_si (op, label, reversed, insn)
- rtx op;
- const char * label;
- int reversed;
- rtx insn;
+xstormy16_output_cbranch_si (rtx op, const char *label, int reversed, rtx insn)
{
static char string[64];
int need_longbranch = get_attr_length (insn) >= 8;
/* The missing codes above should never be generated. */
default:
- abort ();
+ gcc_unreachable ();
}
switch (code)
{
int regnum;
- if (GET_CODE (XEXP (op, 0)) != REG)
- abort ();
+ gcc_assert (GET_CODE (XEXP (op, 0)) == REG);
regnum = REGNO (XEXP (op, 0));
sprintf (prevop, "or %s,%s", reg_names[regnum], reg_names[regnum+1]);
break;
default:
- abort ();
+ gcc_unreachable ();
}
if (need_longbranch)
registers, but not memory. Some machines allow copying all registers to and
from memory, but require a scratch register for stores to some memory
locations (e.g., those with symbolic address on the RT, and those with
- certain symbolic address on the Sparc when compiling PIC). In some cases,
+ certain symbolic address on the SPARC when compiling PIC). In some cases,
both an intermediate and a scratch register are required.
You should define these macros to indicate to the reload phase that it may
registers can only be copied to memory and not to another class of
registers. In that case, secondary reload registers are not needed and
would not be helpful. Instead, a stack location must be used to perform the
- copy and the `movM' pattern should use memory as a intermediate storage.
+ copy and the `movM' pattern should use memory as an intermediate storage.
This case often occurs between floating-point and general registers. */
enum reg_class
-xstormy16_secondary_reload_class (class, mode, x)
- enum reg_class class;
- enum machine_mode mode;
- rtx x;
+xstormy16_secondary_reload_class (enum reg_class class,
+ enum machine_mode mode,
+ rtx x)
{
/* This chip has the interesting property that only the first eight
registers can be moved to/from memory. */
return NO_REGS;
}
-/* Recognise a PLUS that needs the carry register. */
+/* Recognize a PLUS that needs the carry register. */
int
-xstormy16_carry_plus_operand (x, mode)
- rtx x;
- enum machine_mode mode ATTRIBUTE_UNUSED;
+xstormy16_carry_plus_operand (rtx x, enum machine_mode mode ATTRIBUTE_UNUSED)
{
return (GET_CODE (x) == PLUS
&& GET_CODE (XEXP (x, 1)) == CONST_INT
&& (INTVAL (XEXP (x, 1)) < -4 || INTVAL (XEXP (x, 1)) > 4));
}
+/* Detect and error out on out-of-range constants for movhi. */
+int
+xs_hi_general_operand (rtx x, enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+ if ((GET_CODE (x) == CONST_INT)
+ && ((INTVAL (x) >= 32768) || (INTVAL (x) < -32768)))
+ error ("constant halfword load operand out of range");
+ return general_operand (x, mode);
+}
+
+/* Detect and error out on out-of-range constants for addhi and subhi. */
+int
+xs_hi_nonmemory_operand (rtx x, enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+ if ((GET_CODE (x) == CONST_INT)
+ && ((INTVAL (x) >= 32768) || (INTVAL (x) < -32768)))
+ error ("constant arithmetic operand out of range");
+ return nonmemory_operand (x, mode);
+}
enum reg_class
-xstormy16_preferred_reload_class (x, class)
- enum reg_class class;
- rtx x;
+xstormy16_preferred_reload_class (rtx x, enum reg_class class)
{
if (class == GENERAL_REGS
&& GET_CODE (x) == MEM)
return class;
}
+/* Predicate for symbols and addresses that reflect special 8-bit
+ addressing. */
+int
+xstormy16_below100_symbol (rtx x,
+ enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+ if (GET_CODE (x) == CONST)
+ x = XEXP (x, 0);
+ if (GET_CODE (x) == PLUS
+ && GET_CODE (XEXP (x, 1)) == CONST_INT)
+ x = XEXP (x, 0);
+
+ if (GET_CODE (x) == SYMBOL_REF)
+ return (SYMBOL_REF_FLAGS (x) & SYMBOL_FLAG_XSTORMY16_BELOW100) != 0;
+
+ if (GET_CODE (x) == CONST_INT)
+ {
+ HOST_WIDE_INT i = INTVAL (x);
+ if ((i >= 0x0000 && i <= 0x00ff)
+ || (i >= 0x7f00 && i <= 0x7fff))
+ return 1;
+ }
+ return 0;
+}
+
+/* Likewise, but only for non-volatile MEMs, for patterns where the
+ MEM will get split into smaller sized accesses. */
+int
+xstormy16_splittable_below100_operand (rtx x, enum machine_mode mode)
+{
+ if (GET_CODE (x) == MEM && MEM_VOLATILE_P (x))
+ return 0;
+ return xstormy16_below100_operand (x, mode);
+}
+
+/* Expand an 8-bit IOR. This either detects the one case we can
+ actually do, or uses a 16-bit IOR. */
+void
+xstormy16_expand_iorqi3 (rtx *operands)
+{
+ rtx in, out, outsub, val;
+
+ out = operands[0];
+ in = operands[1];
+ val = operands[2];
+
+ if (xstormy16_onebit_set_operand (val, QImode))
+ {
+ if (!xstormy16_below100_or_register (in, QImode))
+ in = copy_to_mode_reg (QImode, in);
+ if (!xstormy16_below100_or_register (out, QImode))
+ out = gen_reg_rtx (QImode);
+ emit_insn (gen_iorqi3_internal (out, in, val));
+ if (out != operands[0])
+ emit_move_insn (operands[0], out);
+ return;
+ }
+
+ if (GET_CODE (in) != REG)
+ in = copy_to_mode_reg (QImode, in);
+ if (GET_CODE (val) != REG
+ && GET_CODE (val) != CONST_INT)
+ val = copy_to_mode_reg (QImode, val);
+ if (GET_CODE (out) != REG)
+ out = gen_reg_rtx (QImode);
+
+ in = simplify_gen_subreg (HImode, in, QImode, 0);
+ outsub = simplify_gen_subreg (HImode, out, QImode, 0);
+ if (GET_CODE (val) != CONST_INT)
+ val = simplify_gen_subreg (HImode, val, QImode, 0);
+
+ emit_insn (gen_iorhi3 (outsub, in, val));
+
+ if (out != operands[0])
+ emit_move_insn (operands[0], out);
+}
+
+/* Likewise, for AND. */
+void
+xstormy16_expand_andqi3 (rtx *operands)
+{
+ rtx in, out, outsub, val;
+
+ out = operands[0];
+ in = operands[1];
+ val = operands[2];
+
+ if (xstormy16_onebit_clr_operand (val, QImode))
+ {
+ if (!xstormy16_below100_or_register (in, QImode))
+ in = copy_to_mode_reg (QImode, in);
+ if (!xstormy16_below100_or_register (out, QImode))
+ out = gen_reg_rtx (QImode);
+ emit_insn (gen_andqi3_internal (out, in, val));
+ if (out != operands[0])
+ emit_move_insn (operands[0], out);
+ return;
+ }
+
+ if (GET_CODE (in) != REG)
+ in = copy_to_mode_reg (QImode, in);
+ if (GET_CODE (val) != REG
+ && GET_CODE (val) != CONST_INT)
+ val = copy_to_mode_reg (QImode, val);
+ if (GET_CODE (out) != REG)
+ out = gen_reg_rtx (QImode);
+
+ in = simplify_gen_subreg (HImode, in, QImode, 0);
+ outsub = simplify_gen_subreg (HImode, out, QImode, 0);
+ if (GET_CODE (val) != CONST_INT)
+ val = simplify_gen_subreg (HImode, val, QImode, 0);
+
+ emit_insn (gen_andhi3 (outsub, in, val));
+
+ if (out != operands[0])
+ emit_move_insn (operands[0], out);
+}
+
#define LEGITIMATE_ADDRESS_INTEGER_P(X, OFFSET) \
(GET_CODE (X) == CONST_INT \
&& (unsigned HOST_WIDE_INT) (INTVAL (X) + (OFFSET) + 2048) < 4096)
&& (INTVAL (X) + (OFFSET) < 0x100 || INTVAL (X) + (OFFSET) >= 0x7F00))
int
-xstormy16_legitimate_address_p (mode, x, strict)
- enum machine_mode mode ATTRIBUTE_UNUSED;
- rtx x;
- int strict;
+xstormy16_legitimate_address_p (enum machine_mode mode ATTRIBUTE_UNUSED,
+ rtx x, int strict)
{
if (LEGITIMATE_ADDRESS_CONST_INT_P (x, 0))
return 1;
&& LEGITIMATE_ADDRESS_INTEGER_P (XEXP (x, 1), 0))
x = XEXP (x, 0);
- if (GET_CODE (x) == POST_INC
+ if ((GET_CODE (x) == PRE_MODIFY
+ && GET_CODE (XEXP (XEXP (x, 1), 1)) == CONST_INT)
+ || GET_CODE (x) == POST_INC
|| GET_CODE (x) == PRE_DEC)
x = XEXP (x, 0);
if (GET_CODE (x) == REG && REGNO_OK_FOR_BASE_P (REGNO (x))
&& (! strict || REGNO (x) < FIRST_PSEUDO_REGISTER))
return 1;
+
+ if (xstormy16_below100_symbol(x, mode))
+ return 1;
return 0;
}
address for DImode or DFmode, or if the address is a post-increment
or pre-decrement address. */
int
-xstormy16_mode_dependent_address_p (x)
- rtx x;
+xstormy16_mode_dependent_address_p (rtx x)
{
if (LEGITIMATE_ADDRESS_CONST_INT_P (x, 0)
&& ! LEGITIMATE_ADDRESS_CONST_INT_P (x, 6))
represented by the constraint letter C. If C is not defined as an extra
constraint, the value returned should be 0 regardless of VALUE. */
int
-xstormy16_extra_constraint_p (x, c)
- rtx x;
- int c;
+xstormy16_extra_constraint_p (rtx x, int c)
{
switch (c)
{
return (GET_CODE (x) == CONST_INT
&& (INTVAL (x) < 2 || INTVAL (x) > 15));
+ /* 'Z' is for CONST_INT value zero. This is for adding zero to
+ a register in addhi3, which would otherwise require a carry. */
+ case 'Z':
+ return (GET_CODE (x) == CONST_INT
+ && (INTVAL (x) == 0));
+
+ case 'W':
+ return xstormy16_below100_operand(x, GET_MODE(x));
+
default:
return 0;
}
}
int
-short_memory_operand (x, mode)
- rtx x;
- enum machine_mode mode;
+short_memory_operand (rtx x, enum machine_mode mode)
{
if (! memory_operand (x, mode))
return 0;
return (GET_CODE (XEXP (x, 0)) != PLUS);
}
-/* Splitter for the 'move' patterns, for modes not directly implemeted
+/* Splitter for the 'move' patterns, for modes not directly implemented
by hardware. Emit insns to copy a value of mode MODE from SRC to
DEST.
*/
void
-xstormy16_split_move (mode, dest, src)
- enum machine_mode mode;
- rtx dest;
- rtx src;
+xstormy16_split_move (enum machine_mode mode, rtx dest, rtx src)
{
int num_words = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
int direction, end, i;
rtx auto_inc_reg_rtx = NULL_RTX;
/* Check initial conditions. */
- if (! reload_completed
- || mode == QImode || mode == HImode
- || ! nonimmediate_operand (dest, mode)
- || ! general_operand (src, mode))
- abort ();
+ gcc_assert (reload_completed
+ && mode != QImode && mode != HImode
+ && nonimmediate_operand (dest, mode)
+ && general_operand (src, mode));
/* This case is not supported below, and shouldn't be generated. */
- if (GET_CODE (dest) == MEM
- && GET_CODE (src) == MEM)
- abort ();
+ gcc_assert (GET_CODE (dest) != MEM || GET_CODE (src) != MEM);
/* This case is very very bad after reload, so trap it now. */
- if (GET_CODE (dest) == SUBREG
- || GET_CODE (src) == SUBREG)
- abort ();
+ gcc_assert (GET_CODE (dest) != SUBREG && GET_CODE (src) != SUBREG);
/* The general idea is to copy by words, offsetting the source and
destination. Normally the least-significant word will be copied
&& reg_overlap_mentioned_p (dest, src))
{
int regno;
- if (GET_CODE (dest) != REG)
- abort ();
+
+ gcc_assert (GET_CODE (dest) == REG);
regno = REGNO (dest);
- if (! refers_to_regno_p (regno, regno + num_words, mem_operand, 0))
- abort ();
+ gcc_assert (refers_to_regno_p (regno, regno + num_words,
+ mem_operand, 0));
if (refers_to_regno_p (regno, regno + 1, mem_operand, 0))
direction = -1;
(set (reg:DI r0) (mem:DI (reg:HI r1)))
which we'd need to support by doing the set of the second word
last. */
- abort ();
+ gcc_unreachable ();
}
end = direction < 0 ? -1 : num_words;
MEM_VOLATILE_P (w_dest) = 1;
/* The simplify_subreg calls must always be able to simplify. */
- if (GET_CODE (w_src) == SUBREG
- || GET_CODE (w_dest) == SUBREG)
- abort ();
+ gcc_assert (GET_CODE (w_src) != SUBREG
+ && GET_CODE (w_dest) != SUBREG);
insn = emit_insn (gen_rtx_SET (VOIDmode, w_dest, w_src));
if (auto_inc_reg_rtx)
mode MODE from SRC to DEST. */
void
-xstormy16_expand_move (mode, dest, src)
- enum machine_mode mode;
- rtx dest;
- rtx src;
+xstormy16_expand_move (enum machine_mode mode, rtx dest, rtx src)
{
+ if ((GET_CODE (dest) == MEM) && (GET_CODE (XEXP (dest, 0)) == PRE_MODIFY))
+ {
+ rtx pmv = XEXP (dest, 0);
+ rtx dest_reg = XEXP (pmv, 0);
+ rtx dest_mod = XEXP (pmv, 1);
+ rtx set = gen_rtx_SET (Pmode, dest_reg, dest_mod);
+ rtx clobber = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (BImode, 16));
+
+ dest = gen_rtx_MEM (mode, dest_reg);
+ emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, set, clobber)));
+ }
+ else if ((GET_CODE (src) == MEM) && (GET_CODE (XEXP (src, 0)) == PRE_MODIFY))
+ {
+ rtx pmv = XEXP (src, 0);
+ rtx src_reg = XEXP (pmv, 0);
+ rtx src_mod = XEXP (pmv, 1);
+ rtx set = gen_rtx_SET (Pmode, src_reg, src_mod);
+ rtx clobber = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (BImode, 16));
+
+ src = gen_rtx_MEM (mode, src_reg);
+ emit_insn (gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, set, clobber)));
+ }
+
/* There are only limited immediate-to-memory move instructions. */
if (! reload_in_progress
&& ! reload_completed
&& GET_CODE (dest) == MEM
&& (GET_CODE (XEXP (dest, 0)) != CONST_INT
|| ! xstormy16_legitimate_address_p (mode, XEXP (dest, 0), 0))
+ && ! xstormy16_below100_operand (dest, mode)
&& GET_CODE (src) != REG
&& GET_CODE (src) != SUBREG)
src = copy_to_mode_reg (mode, src);
#define REG_NEEDS_SAVE(REGNUM, IFUN) \
((regs_ever_live[REGNUM] && ! call_used_regs[REGNUM]) \
|| (IFUN && ! fixed_regs[REGNUM] && call_used_regs[REGNUM] \
+ && (REGNO_REG_CLASS (REGNUM) != CARRY_REGS) \
&& (regs_ever_live[REGNUM] || ! current_function_is_leaf)))
/* Compute the stack layout. */
struct xstormy16_stack_layout
-xstormy16_compute_stack_layout ()
+xstormy16_compute_stack_layout (void)
{
struct xstormy16_stack_layout layout;
int regno;
if (REG_NEEDS_SAVE (regno, ifun))
layout.register_save_size += UNITS_PER_WORD;
- if (current_function_varargs || current_function_stdarg)
+ if (current_function_stdarg)
layout.stdarg_save_size = NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD;
else
layout.stdarg_save_size = 0;
/* Determine how all the special registers get eliminated. */
int
-xstormy16_initial_elimination_offset (from, to)
- int from, to;
+xstormy16_initial_elimination_offset (int from, int to)
{
struct xstormy16_stack_layout layout;
int result;
else if (from == ARG_POINTER_REGNUM && to == STACK_POINTER_REGNUM)
result = -(layout.sp_minus_fp + layout.fp_minus_ap);
else
- abort ();
+ gcc_unreachable ();
return result;
}
static rtx
-emit_addhi3_postreload (dest, src0, src1)
- rtx dest;
- rtx src0;
- rtx src1;
+emit_addhi3_postreload (rtx dest, rtx src0, rtx src1)
{
rtx set, clobber, insn;
Also any insns generated here should have RTX_FRAME_RELATED_P(insn) = 1
so that the debug info generation code can handle them properly. */
void
-xstormy16_expand_prologue ()
+xstormy16_expand_prologue (void)
{
struct xstormy16_stack_layout layout;
int regno;
rtx insn;
rtx mem_push_rtx;
- rtx mem_fake_push_rtx;
const int ifun = xstormy16_interrupt_function_p ();
mem_push_rtx = gen_rtx_POST_INC (Pmode, stack_pointer_rtx);
mem_push_rtx = gen_rtx_MEM (HImode, mem_push_rtx);
- mem_fake_push_rtx = gen_rtx_PRE_INC (Pmode, stack_pointer_rtx);
- mem_fake_push_rtx = gen_rtx_MEM (HImode, mem_fake_push_rtx);
layout = xstormy16_compute_stack_layout ();
+ if (layout.locals_size >= 32768)
+ error ("local variable memory requirements exceed capacity");
+
/* Save the argument registers if necessary. */
if (layout.stdarg_save_size)
for (regno = FIRST_ARGUMENT_REGISTER;
regno < FIRST_ARGUMENT_REGISTER + NUM_ARGUMENT_REGISTERS;
regno++)
{
+ rtx dwarf;
rtx reg = gen_rtx_REG (HImode, regno);
+
insn = emit_move_insn (mem_push_rtx, reg);
RTX_FRAME_RELATED_P (insn) = 1;
+
+ dwarf = gen_rtx_SEQUENCE (VOIDmode, rtvec_alloc (2));
+
+ XVECEXP (dwarf, 0, 0) = gen_rtx_SET (VOIDmode,
+ gen_rtx_MEM (Pmode, stack_pointer_rtx),
+ reg);
+ XVECEXP (dwarf, 0, 1) = gen_rtx_SET (Pmode, stack_pointer_rtx,
+ plus_constant (stack_pointer_rtx,
+ GET_MODE_SIZE (Pmode)));
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
- gen_rtx_SET (VOIDmode,
- mem_fake_push_rtx,
- reg),
+ dwarf,
REG_NOTES (insn));
+ RTX_FRAME_RELATED_P (XVECEXP (dwarf, 0, 0)) = 1;
+ RTX_FRAME_RELATED_P (XVECEXP (dwarf, 0, 1)) = 1;
}
/* Push each of the registers to save. */
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (REG_NEEDS_SAVE (regno, ifun))
{
+ rtx dwarf;
rtx reg = gen_rtx_REG (HImode, regno);
+
insn = emit_move_insn (mem_push_rtx, reg);
RTX_FRAME_RELATED_P (insn) = 1;
+
+ dwarf = gen_rtx_SEQUENCE (VOIDmode, rtvec_alloc (2));
+
+ XVECEXP (dwarf, 0, 0) = gen_rtx_SET (VOIDmode,
+ gen_rtx_MEM (Pmode, stack_pointer_rtx),
+ reg);
+ XVECEXP (dwarf, 0, 1) = gen_rtx_SET (Pmode, stack_pointer_rtx,
+ plus_constant (stack_pointer_rtx,
+ GET_MODE_SIZE (Pmode)));
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
- gen_rtx_SET (VOIDmode,
- mem_fake_push_rtx,
- reg),
+ dwarf,
REG_NOTES (insn));
+ RTX_FRAME_RELATED_P (XVECEXP (dwarf, 0, 0)) = 1;
+ RTX_FRAME_RELATED_P (XVECEXP (dwarf, 0, 1)) = 1;
}
/* It's just possible that the SP here might be what we need for
- the new FP... */
+ the new FP... */
if (frame_pointer_needed && layout.sp_minus_fp == layout.locals_size)
- {
- insn = emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx);
- RTX_FRAME_RELATED_P (insn) = 1;
- }
+ emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx);
/* Allocate space for local variables. */
if (layout.locals_size)
if (frame_pointer_needed && layout.sp_minus_fp != layout.locals_size)
{
insn = emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx);
- RTX_FRAME_RELATED_P (insn) = 1;
+
if (layout.sp_minus_fp)
- {
- insn = emit_addhi3_postreload (hard_frame_pointer_rtx,
- hard_frame_pointer_rtx,
- GEN_INT (-layout.sp_minus_fp));
- RTX_FRAME_RELATED_P (insn) = 1;
- }
+ emit_addhi3_postreload (hard_frame_pointer_rtx,
+ hard_frame_pointer_rtx,
+ GEN_INT (-layout.sp_minus_fp));
}
}
/* Do we need an epilogue at all? */
int
-direct_return ()
+direct_return (void)
{
return (reload_completed
&& xstormy16_compute_stack_layout ().frame_size == 0);
}
/* Called after register allocation to add any instructions needed for
- the epilogue. Using a epilogue insn is favored compared to putting
+ the epilogue. Using an epilogue insn is favored compared to putting
all of the instructions in the TARGET_ASM_FUNCTION_PROLOGUE macro,
since it allows the scheduler to intermix instructions with the
saves of the caller saved registers. In some cases, it might be
such scheduling. */
void
-xstormy16_expand_epilogue ()
+xstormy16_expand_epilogue (void)
{
struct xstormy16_stack_layout layout;
- rtx mem_pop_rtx;
+ rtx mem_pop_rtx, insn;
int regno;
const int ifun = xstormy16_interrupt_function_p ();
if (frame_pointer_needed && layout.sp_minus_fp == layout.locals_size)
emit_move_insn (stack_pointer_rtx, hard_frame_pointer_rtx);
else
- emit_addhi3_postreload (stack_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- layout.locals_size));
+ {
+ insn = emit_addhi3_postreload (stack_pointer_rtx, stack_pointer_rtx,
+ GEN_INT (- layout.locals_size));
+ RTX_FRAME_RELATED_P (insn) = 1;
+ }
}
/* Restore any call-saved registers. */
for (regno = FIRST_PSEUDO_REGISTER - 1; regno >= 0; regno--)
if (REG_NEEDS_SAVE (regno, ifun))
- emit_move_insn (gen_rtx_REG (HImode, regno), mem_pop_rtx);
+ {
+ rtx dwarf;
+
+ insn = emit_move_insn (gen_rtx_REG (HImode, regno), mem_pop_rtx);
+ RTX_FRAME_RELATED_P (insn) = 1;
+ dwarf = gen_rtx_SET (Pmode, stack_pointer_rtx,
+ plus_constant (stack_pointer_rtx,
+ -GET_MODE_SIZE (Pmode)));
+ REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
+ dwarf,
+ REG_NOTES (insn));
+ }
/* Pop the stack for the stdarg save area. */
if (layout.stdarg_save_size)
- emit_addhi3_postreload (stack_pointer_rtx, stack_pointer_rtx,
- GEN_INT (- layout.stdarg_save_size));
+ {
+ insn = emit_addhi3_postreload (stack_pointer_rtx, stack_pointer_rtx,
+ GEN_INT (- layout.stdarg_save_size));
+ RTX_FRAME_RELATED_P (insn) = 1;
+ }
/* Return. */
if (ifun)
}
int
-xstormy16_epilogue_uses (regno)
- int regno;
+xstormy16_epilogue_uses (int regno)
{
if (reload_completed && call_used_regs[regno])
{
}
return 0;
}
+
+void
+xstormy16_function_profiler (void)
+{
+ sorry ("function_profiler support");
+}
+
\f
/* Return an updated summarizer variable CUM to advance past an
argument in the argument list. The values MODE, TYPE and NAMED
it makes life easier for xstormy16_build_va_list if it does update
the word count. */
CUMULATIVE_ARGS
-xstormy16_function_arg_advance (cum, mode, type, named)
- CUMULATIVE_ARGS cum;
- enum machine_mode mode;
- tree type;
- int named ATTRIBUTE_UNUSED;
+xstormy16_function_arg_advance (CUMULATIVE_ARGS cum, enum machine_mode mode,
+ tree type, int named ATTRIBUTE_UNUSED)
{
/* If an argument would otherwise be passed partially in registers,
and partially on the stack, the whole of it is passed on the
return cum;
}
-/* Do any needed setup for a variadic function. CUM has not been updated
- for the last named argument which has type TYPE and mode MODE. */
-void
-xstormy16_setup_incoming_varargs (cum, int_mode, type, pretend_size)
- CUMULATIVE_ARGS cum ATTRIBUTE_UNUSED;
- int int_mode ATTRIBUTE_UNUSED;
- tree type ATTRIBUTE_UNUSED;
- int * pretend_size ATTRIBUTE_UNUSED;
+rtx
+xstormy16_function_arg (CUMULATIVE_ARGS cum, enum machine_mode mode,
+ tree type, int named ATTRIBUTE_UNUSED)
{
+ if (mode == VOIDmode)
+ return const0_rtx;
+ if (targetm.calls.must_pass_in_stack (mode, type)
+ || cum + XSTORMY16_WORD_SIZE (type, mode) > NUM_ARGUMENT_REGISTERS)
+ return 0;
+ return gen_rtx_REG (mode, cum + 2);
}
/* Build the va_list type.
for arguments that have not been passed in registers.
To keep the layout nice, the pointer is first in the structure. */
-tree
-xstormy16_build_va_list ()
+static tree
+xstormy16_build_builtin_va_list (void)
{
tree f_1, f_2, record, type_decl;
- record = make_lang_type (RECORD_TYPE);
+ record = (*lang_hooks.types.make_type) (RECORD_TYPE);
type_decl = build_decl (TYPE_DECL, get_identifier ("__va_list_tag"), record);
f_1 = build_decl (FIELD_DECL, get_identifier ("base"),
return record;
}
-/* Implement the stdarg/varargs va_start macro. STDARG_P is non-zero if this
+/* Implement the stdarg/varargs va_start macro. STDARG_P is nonzero if this
is stdarg.h instead of varargs.h. VALIST is the tree of the va_list
variable to initialize. NEXTARG is the machine independent notion of the
'next' argument after the variable arguments. */
void
-xstormy16_expand_builtin_va_start (stdarg_p, valist, nextarg)
- int stdarg_p ATTRIBUTE_UNUSED;
- tree valist;
- rtx nextarg ATTRIBUTE_UNUSED;
+xstormy16_expand_builtin_va_start (tree valist, rtx nextarg ATTRIBUTE_UNUSED)
{
tree f_base, f_count;
tree base, count;
f_base = TYPE_FIELDS (va_list_type_node);
f_count = TREE_CHAIN (f_base);
- base = build (COMPONENT_REF, TREE_TYPE (f_base), valist, f_base);
- count = build (COMPONENT_REF, TREE_TYPE (f_count), valist, f_count);
+ base = build3 (COMPONENT_REF, TREE_TYPE (f_base), valist, f_base, NULL_TREE);
+ count = build3 (COMPONENT_REF, TREE_TYPE (f_count), valist, f_count,
+ NULL_TREE);
t = make_tree (TREE_TYPE (base), virtual_incoming_args_rtx);
- t = build (PLUS_EXPR, TREE_TYPE (base), t,
- build_int_2 (INCOMING_FRAME_SP_OFFSET, 0));
- t = build (MODIFY_EXPR, TREE_TYPE (base), base, t);
+ t = build2 (PLUS_EXPR, TREE_TYPE (base), t,
+ build_int_cst (NULL_TREE, INCOMING_FRAME_SP_OFFSET));
+ t = build2 (MODIFY_EXPR, TREE_TYPE (base), base, t);
TREE_SIDE_EFFECTS (t) = 1;
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
- t = build (MODIFY_EXPR, TREE_TYPE (count), count,
- build_int_2 (current_function_args_info * UNITS_PER_WORD, 0));
+ t = build2 (MODIFY_EXPR, TREE_TYPE (count), count,
+ build_int_cst (NULL_TREE,
+ current_function_args_info * UNITS_PER_WORD));
TREE_SIDE_EFFECTS (t) = 1;
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
}
of type va_list as a tree, TYPE is the type passed to va_arg.
Note: This algorithm is documented in stormy-abi. */
-rtx
-xstormy16_expand_builtin_va_arg (valist, type)
- tree valist;
- tree type;
+static tree
+xstormy16_expand_builtin_va_arg (tree valist, tree type, tree *pre_p,
+ tree *post_p ATTRIBUTE_UNUSED)
{
tree f_base, f_count;
tree base, count;
- rtx count_rtx, addr_rtx, r;
- rtx lab_gotaddr, lab_fromstack;
- tree t;
- int size, size_of_reg_args;
- tree size_tree, count_plus_size;
- rtx count_plus_size_rtx;
-
+ tree count_tmp, addr, t;
+ tree lab_gotaddr, lab_fromstack;
+ int size, size_of_reg_args, must_stack;
+ tree size_tree;
+
f_base = TYPE_FIELDS (va_list_type_node);
f_count = TREE_CHAIN (f_base);
- base = build (COMPONENT_REF, TREE_TYPE (f_base), valist, f_base);
- count = build (COMPONENT_REF, TREE_TYPE (f_count), valist, f_count);
+ base = build3 (COMPONENT_REF, TREE_TYPE (f_base), valist, f_base, NULL_TREE);
+ count = build3 (COMPONENT_REF, TREE_TYPE (f_count), valist, f_count,
+ NULL_TREE);
- size = PUSH_ROUNDING (int_size_in_bytes (type));
+ must_stack = targetm.calls.must_pass_in_stack (TYPE_MODE (type), type);
size_tree = round_up (size_in_bytes (type), UNITS_PER_WORD);
+ gimplify_expr (&size_tree, pre_p, NULL, is_gimple_val, fb_rvalue);
size_of_reg_args = NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD;
- count_rtx = expand_expr (count, NULL_RTX, HImode, EXPAND_NORMAL);
- lab_gotaddr = gen_label_rtx ();
- lab_fromstack = gen_label_rtx ();
- addr_rtx = gen_reg_rtx (Pmode);
+ count_tmp = get_initialized_tmp_var (count, pre_p, NULL);
+ lab_gotaddr = create_artificial_label ();
+ lab_fromstack = create_artificial_label ();
+ addr = create_tmp_var (ptr_type_node, NULL);
- count_plus_size = build (PLUS_EXPR, TREE_TYPE (count), count, size_tree);
- count_plus_size_rtx = expand_expr (count_plus_size, NULL_RTX, HImode, EXPAND_NORMAL);
- emit_cmp_and_jump_insns (count_plus_size_rtx, GEN_INT (size_of_reg_args),
- GTU, const1_rtx, HImode, 1, 1, lab_fromstack);
+ if (!must_stack)
+ {
+ tree r;
+
+ t = fold_convert (TREE_TYPE (count), size_tree);
+ t = build2 (PLUS_EXPR, TREE_TYPE (count), count_tmp, t);
+ r = fold_convert (TREE_TYPE (count), size_int (size_of_reg_args));
+ t = build2 (GT_EXPR, boolean_type_node, t, r);
+ t = build3 (COND_EXPR, void_type_node, t,
+ build1 (GOTO_EXPR, void_type_node, lab_fromstack),
+ NULL_TREE);
+ gimplify_and_add (t, pre_p);
- t = build (PLUS_EXPR, ptr_type_node, base, count);
- r = expand_expr (t, addr_rtx, Pmode, EXPAND_NORMAL);
- if (r != addr_rtx)
- emit_move_insn (addr_rtx, r);
-
- emit_jump_insn (gen_jump (lab_gotaddr));
- emit_barrier ();
- emit_label (lab_fromstack);
+ t = fold_convert (ptr_type_node, count_tmp);
+ t = build2 (PLUS_EXPR, ptr_type_node, base, t);
+ t = build2 (MODIFY_EXPR, void_type_node, addr, t);
+ gimplify_and_add (t, pre_p);
+
+ t = build1 (GOTO_EXPR, void_type_node, lab_gotaddr);
+ gimplify_and_add (t, pre_p);
+
+ t = build1 (LABEL_EXPR, void_type_node, lab_fromstack);
+ gimplify_and_add (t, pre_p);
+ }
/* Arguments larger than a word might need to skip over some
registers, since arguments are either passed entirely in
registers or entirely on the stack. */
- if (size > 2 || size < 0)
+ size = PUSH_ROUNDING (int_size_in_bytes (type));
+ if (size > 2 || size < 0 || must_stack)
{
- rtx lab_notransition = gen_label_rtx ();
- emit_cmp_and_jump_insns (count_rtx, GEN_INT (NUM_ARGUMENT_REGISTERS
- * UNITS_PER_WORD),
- GEU, const1_rtx, HImode, 1, 1,
- lab_notransition);
-
- t = build (MODIFY_EXPR, TREE_TYPE (count), count,
- build_int_2 (NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD, 0));
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
-
- emit_label (lab_notransition);
- }
+ tree r, u;
- t = build (PLUS_EXPR, sizetype, size_tree,
- build_int_2 ((- NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD
- + INCOMING_FRAME_SP_OFFSET),
- -1));
- t = build (PLUS_EXPR, TREE_TYPE (count), count, fold (t));
- t = build (MINUS_EXPR, TREE_TYPE (base), base, t);
- r = expand_expr (t, addr_rtx, Pmode, EXPAND_NORMAL);
- if (r != addr_rtx)
- emit_move_insn (addr_rtx, r);
-
- emit_label (lab_gotaddr);
-
- count_plus_size = build (PLUS_EXPR, TREE_TYPE (count), count, size_tree);
- t = build (MODIFY_EXPR, TREE_TYPE (count), count, count_plus_size);
- TREE_SIDE_EFFECTS (t) = 1;
- expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
+ r = size_int (NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD);
+ u = build2 (MODIFY_EXPR, void_type_node, count_tmp, r);
- return addr_rtx;
+ t = fold_convert (TREE_TYPE (count), r);
+ t = build2 (GE_EXPR, boolean_type_node, count_tmp, t);
+ t = build3 (COND_EXPR, void_type_node, t, NULL_TREE, u);
+ gimplify_and_add (t, pre_p);
+ }
+
+ t = size_int (NUM_ARGUMENT_REGISTERS * UNITS_PER_WORD
+ - INCOMING_FRAME_SP_OFFSET);
+ t = fold_convert (TREE_TYPE (count), t);
+ t = build2 (MINUS_EXPR, TREE_TYPE (count), count_tmp, t);
+ t = build2 (PLUS_EXPR, TREE_TYPE (count), t,
+ fold_convert (TREE_TYPE (count), size_tree));
+ t = fold_convert (TREE_TYPE (base), fold (t));
+ t = build2 (MINUS_EXPR, TREE_TYPE (base), base, t);
+ t = build2 (MODIFY_EXPR, void_type_node, addr, t);
+ gimplify_and_add (t, pre_p);
+
+ t = build1 (LABEL_EXPR, void_type_node, lab_gotaddr);
+ gimplify_and_add (t, pre_p);
+
+ t = fold_convert (TREE_TYPE (count), size_tree);
+ t = build2 (PLUS_EXPR, TREE_TYPE (count), count_tmp, t);
+ t = build2 (MODIFY_EXPR, TREE_TYPE (count), count, t);
+ gimplify_and_add (t, pre_p);
+
+ addr = fold_convert (build_pointer_type (type), addr);
+ return build_va_arg_indirect_ref (addr);
}
/* Initialize the variable parts of a trampoline. ADDR is an RTX for
the nested function; STATIC_CHAIN is an RTX for the static chain
value that should be passed to the function when it is called. */
void
-xstormy16_initialize_trampoline (addr, fnaddr, static_chain)
- rtx addr;
- rtx fnaddr;
- rtx static_chain;
+xstormy16_initialize_trampoline (rtx addr, rtx fnaddr, rtx static_chain)
{
rtx reg_addr = gen_reg_rtx (Pmode);
rtx temp = gen_reg_rtx (HImode);
emit_move_insn (reg_addr_mem, reg_fnaddr);
}
-/* Create an RTX representing the place where a function returns a
- value of data type VALTYPE. VALTYPE is a tree node representing a
- data type. Write `TYPE_MODE (VALTYPE)' to get the machine mode
- used to represent that type. On many machines, only the mode is
- relevant. (Actually, on most machines, scalar values are returned
- in the same place regardless of mode).
-
- If `PROMOTE_FUNCTION_RETURN' is defined, you must apply the same promotion
- rules specified in `PROMOTE_MODE' if VALTYPE is a scalar type.
-
- If the precise function being called is known, FUNC is a tree node
- (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This makes it
- possible to use a different value-returning convention for specific
- functions when all their calls are known.
+/* Worker function for FUNCTION_VALUE. */
- `FUNCTION_VALUE' is not used for return vales with aggregate data types,
- because these are returned in another way. See `STRUCT_VALUE_REGNUM' and
- related macros. */
rtx
-xstormy16_function_value (valtype, func)
- tree valtype;
- tree func ATTRIBUTE_UNUSED;
+xstormy16_function_value (tree valtype, tree func ATTRIBUTE_UNUSED)
{
enum machine_mode mode;
mode = TYPE_MODE (valtype);
extracted from it.) It might possibly be useful on some targets, but
probably not. */
-void
-xstormy16_asm_output_mi_thunk (file, thunk_fndecl, delta, function)
- FILE *file;
- tree thunk_fndecl ATTRIBUTE_UNUSED;
- int delta;
- tree function;
+static void
+xstormy16_asm_output_mi_thunk (FILE *file,
+ tree thunk_fndecl ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT delta,
+ HOST_WIDE_INT vcall_offset ATTRIBUTE_UNUSED,
+ tree function)
{
int regnum = FIRST_ARGUMENT_REGISTER;
/* There might be a hidden first argument for a returned structure. */
- if (aggregate_value_p (TREE_TYPE (TREE_TYPE (function))))
+ if (aggregate_value_p (TREE_TYPE (TREE_TYPE (function)), function))
regnum += 1;
- fprintf (file, "\tadd %s,#0x%x\n", reg_names[regnum], (delta) & 0xFFFF);
+ fprintf (file, "\tadd %s,#0x%x\n", reg_names[regnum], (int) delta & 0xFFFF);
fputs ("\tjmpf ", file);
assemble_name (file, XSTR (XEXP (DECL_RTL (function), 0), 0));
putc ('\n', file);
}
-/* Mark functions with SYMBOL_REF_FLAG. */
-
+/* The purpose of this function is to override the default behavior of
+ BSS objects. Normally, they go into .bss or .sbss via ".common"
+ directives, but we need to override that and put them in
+ .bss_below100. We can't just use a section override (like we do
+ for .data_below100), because that makes them initialized rather
+ than uninitialized. */
void
-xstormy16_encode_section_info (decl)
- tree decl;
+xstormy16_asm_output_aligned_common (FILE *stream,
+ tree decl,
+ const char *name,
+ int size,
+ int align,
+ int global)
+{
+ rtx mem = DECL_RTL (decl);
+ rtx symbol;
+
+ if (mem != NULL_RTX
+ && GET_CODE (mem) == MEM
+ && GET_CODE (symbol = XEXP (mem, 0)) == SYMBOL_REF
+ && SYMBOL_REF_FLAGS (symbol) & SYMBOL_FLAG_XSTORMY16_BELOW100)
+ {
+ const char *name2;
+ int p2align = 0;
+
+ bss100_section ();
+
+ while (align > 8)
+ {
+ align /= 2;
+ p2align ++;
+ }
+
+ name2 = default_strip_name_encoding (name);
+ if (global)
+ fprintf (stream, "\t.globl\t%s\n", name2);
+ if (p2align)
+ fprintf (stream, "\t.p2align %d\n", p2align);
+ fprintf (stream, "\t.type\t%s, @object\n", name2);
+ fprintf (stream, "\t.size\t%s, %d\n", name2, size);
+ fprintf (stream, "%s:\n\t.space\t%d\n", name2, size);
+ return;
+ }
+
+ if (!global)
+ {
+ fprintf (stream, "\t.local\t");
+ assemble_name (stream, name);
+ fprintf (stream, "\n");
+ }
+ fprintf (stream, "\t.comm\t");
+ assemble_name (stream, name);
+ fprintf (stream, ",%u,%u\n", size, align / BITS_PER_UNIT);
+}
+
+/* Mark symbols with the "below100" attribute so that we can use the
+ special addressing modes for them. */
+
+static void
+xstormy16_encode_section_info (tree decl, rtx r, int first)
{
- if (TREE_CODE (decl) == FUNCTION_DECL)
- SYMBOL_REF_FLAG (XEXP (DECL_RTL (decl), 0)) = 1;
+ default_encode_section_info (decl, r, first);
+
+ if (TREE_CODE (decl) == VAR_DECL
+ && (lookup_attribute ("below100", DECL_ATTRIBUTES (decl))
+ || lookup_attribute ("BELOW100", DECL_ATTRIBUTES (decl))))
+ {
+ rtx symbol = XEXP (r, 0);
+
+ gcc_assert (GET_CODE (symbol) == SYMBOL_REF);
+ SYMBOL_REF_FLAGS (symbol) |= SYMBOL_FLAG_XSTORMY16_BELOW100;
+ }
}
/* Output constructors and destructors. Just like
default_named_section_asm_out_* but don't set the sections writable. */
-#undef TARGET_ASM_CONSTRUCTOR
+#undef TARGET_ASM_CONSTRUCTOR
#define TARGET_ASM_CONSTRUCTOR xstormy16_asm_out_constructor
-#undef TARGET_ASM_DESTRUCTOR
+#undef TARGET_ASM_DESTRUCTOR
#define TARGET_ASM_DESTRUCTOR xstormy16_asm_out_destructor
static void
-xstormy16_asm_out_destructor (symbol, priority)
- rtx symbol;
- int priority;
+xstormy16_asm_out_destructor (rtx symbol, int priority)
{
const char *section = ".dtors";
char buf[16];
- /* ??? This only works reliably with the GNU linker. */
+ /* ??? This only works reliably with the GNU linker. */
if (priority != DEFAULT_INIT_PRIORITY)
{
sprintf (buf, ".dtors.%.5u",
}
static void
-xstormy16_asm_out_constructor (symbol, priority)
- rtx symbol;
- int priority;
+xstormy16_asm_out_constructor (rtx symbol, int priority)
{
const char *section = ".ctors";
char buf[16];
- /* ??? This only works reliably with the GNU linker. */
+ /* ??? This only works reliably with the GNU linker. */
if (priority != DEFAULT_INIT_PRIORITY)
{
sprintf (buf, ".ctors.%.5u",
\f
/* Print a memory address as an operand to reference that memory location. */
void
-xstormy16_print_operand_address (file, address)
- FILE * file;
- rtx address;
+xstormy16_print_operand_address (FILE *file, rtx address)
{
HOST_WIDE_INT offset;
int pre_dec, post_inc;
if (GET_CODE (address) == PLUS)
{
- if (GET_CODE (XEXP (address, 1)) != CONST_INT)
- abort ();
+ gcc_assert (GET_CODE (XEXP (address, 1)) == CONST_INT);
offset = INTVAL (XEXP (address, 1));
address = XEXP (address, 0);
}
if (pre_dec || post_inc)
address = XEXP (address, 0);
- if (GET_CODE (address) != REG)
- abort ();
+ gcc_assert (GET_CODE (address) == REG);
fputc ('(', file);
if (pre_dec)
if (post_inc)
fputs ("++", file);
if (offset != 0)
- {
- fputc (',', file);
- fprintf (file, HOST_WIDE_INT_PRINT_DEC, offset);
- }
+ fprintf (file, "," HOST_WIDE_INT_PRINT_DEC, offset);
fputc (')', file);
}
-/* Print an operand to a assembler instruction. */
+/* Print an operand to an assembler instruction. */
void
-xstormy16_print_operand (file, x, code)
- FILE * file;
- rtx x;
- int code;
+xstormy16_print_operand (FILE *file, rtx x, int code)
{
switch (code)
{
/* There is either one bit set, or one bit clear, in X.
Print it preceded by '#'. */
{
+ static int bits_set[8] = { 0, 1, 1, 2, 1, 2, 2, 3 };
HOST_WIDE_INT xx = 1;
HOST_WIDE_INT l;
if (GET_CODE (x) == CONST_INT)
xx = INTVAL (x);
else
- output_operand_lossage ("`B' operand is not constant");
+ output_operand_lossage ("'B' operand is not constant");
- l = exact_log2 (xx);
- if (l == -1)
- l = exact_log2 (~xx);
+ /* GCC sign-extends masks with the MSB set, so we have to
+ detect all the cases that differ only in sign extension
+ beyond the bits we care about. Normally, the predicates
+ and constraints ensure that we have the right values. This
+ works correctly for valid masks. */
+ if (bits_set[xx & 7] <= 1)
+ {
+ /* Remove sign extension bits. */
+ if ((~xx & ~(HOST_WIDE_INT)0xff) == 0)
+ xx &= 0xff;
+ else if ((~xx & ~(HOST_WIDE_INT)0xffff) == 0)
+ xx &= 0xffff;
+ l = exact_log2 (xx);
+ }
+ else
+ {
+ /* Add sign extension bits. */
+ if ((xx & ~(HOST_WIDE_INT)0xff) == 0)
+ xx |= ~(HOST_WIDE_INT)0xff;
+ else if ((xx & ~(HOST_WIDE_INT)0xffff) == 0)
+ xx |= ~(HOST_WIDE_INT)0xffff;
+ l = exact_log2 (~xx);
+ }
+
if (l == -1)
- output_operand_lossage ("`B' operand has multiple bits set");
+ output_operand_lossage ("'B' operand has multiple bits set");
- fputs (IMMEDIATE_PREFIX, file);
- fprintf (file, HOST_WIDE_INT_PRINT_DEC, l);
+ fprintf (file, IMMEDIATE_PREFIX HOST_WIDE_INT_PRINT_DEC, l);
return;
}
/* Print the symbol without a surrounding @fptr(). */
if (GET_CODE (x) == SYMBOL_REF)
assemble_name (file, XSTR (x, 0));
+ else if (GET_CODE (x) == LABEL_REF)
+ output_asm_label (x);
else
xstormy16_print_operand_address (file, x);
return;
if (GET_CODE (x) == CONST_INT)
xx = INTVAL (x);
else
- output_operand_lossage ("`o' operand is not constant");
+ output_operand_lossage ("'o' operand is not constant");
if (code == 'O')
xx = -xx;
+ fprintf (file, IMMEDIATE_PREFIX HOST_WIDE_INT_PRINT_DEC, xx - 1);
+ return;
+ }
+
+ case 'b':
+ /* Print the shift mask for bp/bn. */
+ {
+ HOST_WIDE_INT xx = 1;
+ HOST_WIDE_INT l;
+
+ if (GET_CODE (x) == CONST_INT)
+ xx = INTVAL (x);
+ else
+ output_operand_lossage ("'B' operand is not constant");
+
+ l = 7 - xx;
+
fputs (IMMEDIATE_PREFIX, file);
- fprintf (file, HOST_WIDE_INT_PRINT_DEC, xx - 1);
+ fprintf (file, HOST_WIDE_INT_PRINT_DEC, l);
return;
}
*/
void
-xstormy16_expand_casesi (index, lower_bound, range, table, default_label)
- rtx index;
- rtx lower_bound;
- rtx range;
- rtx table;
- rtx default_label;
+xstormy16_expand_casesi (rtx index, rtx lower_bound, rtx range,
+ rtx table, rtx default_label)
{
HOST_WIDE_INT range_i = INTVAL (range);
rtx int_index;
index = expand_binop (SImode, sub_optab, index, lower_bound, NULL_RTX, 0,
OPTAB_LIB_WIDEN);
emit_cmp_and_jump_insns (index, range, GTU, NULL_RTX, SImode, 1,
- 0, default_label);
+ default_label);
int_index = gen_lowpart_common (HImode, index);
- emit_insn (gen_ashlhi3 (int_index, int_index, GEN_INT (2)));
+ emit_insn (gen_ashlhi3 (int_index, int_index, const2_rtx));
emit_jump_insn (gen_tablejump_pcrel (int_index, table));
}
all reach. */
void
-xstormy16_output_addr_vec (file, label, table)
- FILE *file;
- rtx label ATTRIBUTE_UNUSED;
- rtx table;
+xstormy16_output_addr_vec (FILE *file, rtx label ATTRIBUTE_UNUSED, rtx table)
{
int vlen, idx;
- function_section (current_function_decl);
+ current_function_section (current_function_decl);
vlen = XVECLEN (table, 0);
for (idx = 0; idx < vlen; idx++)
{
fputs ("\tjmpf ", file);
- xstormy16_print_operand_address (file,
- XEXP (XVECEXP (table, 0, idx), 0));
+ output_asm_label (XEXP (XVECEXP (table, 0, idx), 0));
fputc ('\n', file);
}
}
*/
void
-xstormy16_expand_call (retval, dest, counter)
- rtx retval;
- rtx dest;
- rtx counter;
+xstormy16_expand_call (rtx retval, rtx dest, rtx counter)
{
rtx call, temp;
enum machine_mode mode;
- if (GET_CODE (dest) != MEM)
- abort ();
+ gcc_assert (GET_CODE (dest) == MEM);
dest = XEXP (dest, 0);
if (! CONSTANT_P (dest)
xstormy16_split_cbranch). */
void
-xstormy16_expand_arith (mode, code, dest, src0, src1, carry)
- enum machine_mode mode;
- enum rtx_code code;
- rtx dest;
- rtx src0;
- rtx src1;
- rtx carry;
+xstormy16_expand_arith (enum machine_mode mode, enum rtx_code code,
+ rtx dest, rtx src0, rtx src1, rtx carry)
{
int num_words = GET_MODE_BITSIZE (mode) / BITS_PER_WORD;
int i;
int firstloop = 1;
if (code == NEG)
- {
- rtx zero_reg = gen_reg_rtx (word_mode);
- emit_move_insn (zero_reg, src0);
- src0 = zero_reg;
- }
+ emit_move_insn (src0, const0_rtx);
for (i = 0; i < num_words; i++)
{
rtx w_src0, w_src1, w_dest;
rtx insn;
- if (code == NEG)
- w_src0 = src0;
- else
- w_src0 = simplify_gen_subreg (word_mode, src0, mode,
- i * UNITS_PER_WORD);
+ w_src0 = simplify_gen_subreg (word_mode, src0, mode,
+ i * UNITS_PER_WORD);
w_src1 = simplify_gen_subreg (word_mode, src1, mode, i * UNITS_PER_WORD);
w_dest = simplify_gen_subreg (word_mode, dest, mode, i * UNITS_PER_WORD);
&& INTVAL (w_src1) == -(code == AND))
continue;
- insn = gen_rtx_SET (VOIDmode, w_dest, gen_rtx (code, mode,
- w_src0, w_src1));
+ insn = gen_rtx_SET (VOIDmode, w_dest, gen_rtx_fmt_ee (code, mode,
+ w_src0, w_src1));
break;
case NOT:
break;
default:
- abort ();
+ gcc_unreachable ();
}
firstloop = 0;
emit (insn);
}
-}
-
-/* Return 1 if OP is a shift operator. */
-
-int
-shift_operator (op, mode)
- register rtx op;
- enum machine_mode mode ATTRIBUTE_UNUSED;
-{
- enum rtx_code code = GET_CODE (op);
- return (code == ASHIFT
- || code == ASHIFTRT
- || code == LSHIFTRT);
+ /* If we emit nothing, try_split() will think we failed. So emit
+ something that does nothing and can be optimized away. */
+ if (firstloop)
+ emit (gen_nop ());
}
/* The shift operations are split at output time for constant values;
SIZE_R will be a CONST_INT, X will be a hard register. */
const char *
-xstormy16_output_shift (mode, code, x, size_r, temp)
- enum machine_mode mode;
- enum rtx_code code;
- rtx x;
- rtx size_r;
- rtx temp;
+xstormy16_output_shift (enum machine_mode mode, enum rtx_code code,
+ rtx x, rtx size_r, rtx temp)
{
HOST_WIDE_INT size;
const char *r0, *r1, *rt;
static char r[64];
- if (GET_CODE (size_r) != CONST_INT
- || GET_CODE (x) != REG
- || mode != SImode)
- abort ();
+ gcc_assert (GET_CODE (size_r) == CONST_INT
+ && GET_CODE (x) == REG && mode == SImode);
size = INTVAL (size_r) & (GET_MODE_BITSIZE (mode) - 1);
if (size == 0)
sprintf (r, "shr %s,#1 | rrc %s,#1", r1, r0);
break;
default:
- abort ();
+ gcc_unreachable ();
}
return r;
}
sprintf (r, "mov %s,%s | mov %s,#0", r0, r1, r1);
break;
default:
- abort ();
+ gcc_unreachable ();
}
return r;
}
r0, r1, r1, r0, (int) size - 16);
break;
default:
- abort ();
+ gcc_unreachable ();
}
return r;
}
case ASHIFT:
sprintf (r,
"mov %s,%s | shl %s,#%d | shl %s,#%d | shr %s,#%d | or %s,%s",
- rt, r0, r0, (int) size, r1, (int) size, rt, (int) 16-size,
+ rt, r0, r0, (int) size, r1, (int) size, rt, (int) (16-size),
r1, rt);
break;
case ASHIFTRT:
sprintf (r,
"mov %s,%s | asr %s,#%d | shr %s,#%d | shl %s,#%d | or %s,%s",
- rt, r1, r1, (int) size, r0, (int) size, rt, (int) 16-size,
+ rt, r1, r1, (int) size, r0, (int) size, rt, (int) (16-size),
r0, rt);
break;
case LSHIFTRT:
sprintf (r,
"mov %s,%s | shr %s,#%d | shr %s,#%d | shl %s,#%d | or %s,%s",
- rt, r1, r1, (int) size, r0, (int) size, rt, (int) 16-size,
+ rt, r1, r1, (int) size, r0, (int) size, rt, (int) (16-size),
r0, rt);
break;
default:
- abort ();
+ gcc_unreachable ();
}
return r;
}
/* Return nonzero if the function is an interrupt function. */
int
-xstormy16_interrupt_function_p ()
+xstormy16_interrupt_function_p (void)
{
tree attributes;
#undef TARGET_ATTRIBUTE_TABLE
#define TARGET_ATTRIBUTE_TABLE xstormy16_attribute_table
-static tree xstormy16_handle_interrupt_attribute PARAMS ((tree *, tree, tree, int, bool *));
+static tree xstormy16_handle_interrupt_attribute
+ (tree *, tree, tree, int, bool *);
+static tree xstormy16_handle_below100_attribute
+ (tree *, tree, tree, int, bool *);
+
static const struct attribute_spec xstormy16_attribute_table[] =
{
/* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
{ "interrupt", 0, 0, false, true, true, xstormy16_handle_interrupt_attribute },
+ { "BELOW100", 0, 0, false, false, false, xstormy16_handle_below100_attribute },
+ { "below100", 0, 0, false, false, false, xstormy16_handle_below100_attribute },
{ NULL, 0, 0, false, false, false, NULL }
};
/* Handle an "interrupt" attribute;
arguments as in struct attribute_spec.handler. */
static tree
-xstormy16_handle_interrupt_attribute (node, name, args, flags, no_add_attrs)
- tree *node;
- tree name;
- tree args ATTRIBUTE_UNUSED;
- int flags ATTRIBUTE_UNUSED;
- bool *no_add_attrs;
+xstormy16_handle_interrupt_attribute (tree *node, tree name,
+ tree args ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED,
+ bool *no_add_attrs)
{
if (TREE_CODE (*node) != FUNCTION_TYPE)
{
- warning ("`%s' attribute only applies to functions",
+ warning (OPT_Wattributes, "%qs attribute only applies to functions",
IDENTIFIER_POINTER (name));
*no_add_attrs = true;
}
return NULL_TREE;
}
+
+/* Handle an "below" attribute;
+ arguments as in struct attribute_spec.handler. */
+static tree
+xstormy16_handle_below100_attribute (tree *node,
+ tree name ATTRIBUTE_UNUSED,
+ tree args ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED,
+ bool *no_add_attrs)
+{
+ if (TREE_CODE (*node) != VAR_DECL
+ && TREE_CODE (*node) != POINTER_TYPE
+ && TREE_CODE (*node) != TYPE_DECL)
+ {
+ warning (OPT_Wattributes,
+ "%<__BELOW100__%> attribute only applies to variables");
+ *no_add_attrs = true;
+ }
+ else if (args == NULL_TREE && TREE_CODE (*node) == VAR_DECL)
+ {
+ if (! (TREE_PUBLIC (*node) || TREE_STATIC (*node)))
+ {
+ warning (OPT_Wattributes, "__BELOW100__ attribute not allowed "
+ "with auto storage class");
+ *no_add_attrs = true;
+ }
+ }
+
+ return NULL_TREE;
+}
+\f
+#undef TARGET_INIT_BUILTINS
+#define TARGET_INIT_BUILTINS xstormy16_init_builtins
+#undef TARGET_EXPAND_BUILTIN
+#define TARGET_EXPAND_BUILTIN xstormy16_expand_builtin
+
+static struct {
+ const char *name;
+ int md_code;
+ const char *arg_ops; /* 0..9, t for temp register, r for return value */
+ const char *arg_types; /* s=short,l=long, upper case for unsigned */
+} s16builtins[] = {
+ { "__sdivlh", CODE_FOR_sdivlh, "rt01", "sls" },
+ { "__smodlh", CODE_FOR_sdivlh, "tr01", "sls" },
+ { "__udivlh", CODE_FOR_udivlh, "rt01", "SLS" },
+ { "__umodlh", CODE_FOR_udivlh, "tr01", "SLS" },
+ { 0, 0, 0, 0 }
+};
+
+static void
+xstormy16_init_builtins (void)
+{
+ tree args, ret_type, arg;
+ int i, a;
+
+ ret_type = void_type_node;
+
+ for (i=0; s16builtins[i].name; i++)
+ {
+ args = void_list_node;
+ for (a=strlen (s16builtins[i].arg_types)-1; a>=0; a--)
+ {
+ switch (s16builtins[i].arg_types[a])
+ {
+ case 's': arg = short_integer_type_node; break;
+ case 'S': arg = short_unsigned_type_node; break;
+ case 'l': arg = long_integer_type_node; break;
+ case 'L': arg = long_unsigned_type_node; break;
+ default: gcc_unreachable ();
+ }
+ if (a == 0)
+ ret_type = arg;
+ else
+ args = tree_cons (NULL_TREE, arg, args);
+ }
+ lang_hooks.builtin_function (s16builtins[i].name,
+ build_function_type (ret_type, args),
+ i, BUILT_IN_MD, NULL, NULL);
+ }
+}
+
+static rtx
+xstormy16_expand_builtin(tree exp, rtx target,
+ rtx subtarget ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED,
+ int ignore ATTRIBUTE_UNUSED)
+{
+ rtx op[10], args[10], pat, copyto[10], retval = 0;
+ tree fndecl, argtree;
+ int i, a, o, code;
+
+ fndecl = TREE_OPERAND (TREE_OPERAND (exp, 0), 0);
+ argtree = TREE_OPERAND (exp, 1);
+ i = DECL_FUNCTION_CODE (fndecl);
+ code = s16builtins[i].md_code;
+
+ for (a = 0; a < 10 && argtree; a++)
+ {
+ args[a] = expand_expr (TREE_VALUE (argtree), NULL_RTX, VOIDmode, 0);
+ argtree = TREE_CHAIN (argtree);
+ }
+
+ for (o = 0; s16builtins[i].arg_ops[o]; o++)
+ {
+ char ao = s16builtins[i].arg_ops[o];
+ char c = insn_data[code].operand[o].constraint[0];
+ int omode;
+
+ copyto[o] = 0;
+
+ omode = insn_data[code].operand[o].mode;
+ if (ao == 'r')
+ op[o] = target ? target : gen_reg_rtx (omode);
+ else if (ao == 't')
+ op[o] = gen_reg_rtx (omode);
+ else
+ op[o] = args[(int) hex_value (ao)];
+
+ if (! (*insn_data[code].operand[o].predicate) (op[o], GET_MODE (op[o])))
+ {
+ if (c == '+' || c == '=')
+ {
+ copyto[o] = op[o];
+ op[o] = gen_reg_rtx (omode);
+ }
+ else
+ op[o] = copy_to_mode_reg (omode, op[o]);
+ }
+
+ if (ao == 'r')
+ retval = op[o];
+ }
+
+ pat = GEN_FCN (code) (op[0], op[1], op[2], op[3], op[4],
+ op[5], op[6], op[7], op[8], op[9]);
+ emit_insn (pat);
+
+ for (o = 0; s16builtins[i].arg_ops[o]; o++)
+ if (copyto[o])
+ {
+ emit_move_insn (copyto[o], op[o]);
+ if (op[o] == retval)
+ retval = copyto[o];
+ }
+
+ return retval;
+}
+\f
+
+/* Look for combinations of insns that can be converted to BN or BP
+ opcodes. This is, unfortunately, too complex to do with MD
+ patterns. */
+static void
+combine_bnp (rtx insn)
+{
+ int insn_code, regno, need_extend;
+ unsigned int mask;
+ rtx cond, reg, and, load, qireg, mem;
+ enum machine_mode load_mode = QImode;
+ enum machine_mode and_mode = QImode;
+ rtx shift = NULL_RTX;
+
+ insn_code = recog_memoized (insn);
+ if (insn_code != CODE_FOR_cbranchhi
+ && insn_code != CODE_FOR_cbranchhi_neg)
+ return;
+
+ cond = XVECEXP (PATTERN (insn), 0, 0); /* set */
+ cond = XEXP (cond, 1); /* if */
+ cond = XEXP (cond, 0); /* cond */
+ switch (GET_CODE (cond))
+ {
+ case NE:
+ case EQ:
+ need_extend = 0;
+ break;
+ case LT:
+ case GE:
+ need_extend = 1;
+ break;
+ default:
+ return;
+ }
+
+ reg = XEXP (cond, 0);
+ if (GET_CODE (reg) != REG)
+ return;
+ regno = REGNO (reg);
+ if (XEXP (cond, 1) != const0_rtx)
+ return;
+ if (! find_regno_note (insn, REG_DEAD, regno))
+ return;
+ qireg = gen_rtx_REG (QImode, regno);
+
+ if (need_extend)
+ {
+ /* LT and GE conditionals should have a sign extend before
+ them. */
+ for (and = prev_real_insn (insn); and; and = prev_real_insn (and))
+ {
+ int and_code = recog_memoized (and);
+
+ if (and_code == CODE_FOR_extendqihi2
+ && rtx_equal_p (SET_DEST (PATTERN (and)), reg)
+ && rtx_equal_p (XEXP (SET_SRC (PATTERN (and)), 0), qireg))
+ break;
+
+ if (and_code == CODE_FOR_movhi_internal
+ && rtx_equal_p (SET_DEST (PATTERN (and)), reg))
+ {
+ /* This is for testing bit 15. */
+ and = insn;
+ break;
+ }
+
+ if (reg_mentioned_p (reg, and))
+ return;
+
+ if (GET_CODE (and) != NOTE
+ && GET_CODE (and) != INSN)
+ return;
+ }
+ }
+ else
+ {
+ /* EQ and NE conditionals have an AND before them. */
+ for (and = prev_real_insn (insn); and; and = prev_real_insn (and))
+ {
+ if (recog_memoized (and) == CODE_FOR_andhi3
+ && rtx_equal_p (SET_DEST (PATTERN (and)), reg)
+ && rtx_equal_p (XEXP (SET_SRC (PATTERN (and)), 0), reg))
+ break;
+
+ if (reg_mentioned_p (reg, and))
+ return;
+
+ if (GET_CODE (and) != NOTE
+ && GET_CODE (and) != INSN)
+ return;
+ }
+
+ if (and)
+ {
+ /* Some mis-optimizations by GCC can generate a RIGHT-SHIFT
+ followed by an AND like this:
+
+ (parallel [(set (reg:HI r7) (lshiftrt:HI (reg:HI r7) (const_int 3)))
+ (clobber (reg:BI carry))]
+
+ (set (reg:HI r7) (and:HI (reg:HI r7) (const_int 1)))
+
+ Attempt to detect this here. */
+ for (shift = prev_real_insn (and); shift; shift = prev_real_insn (shift))
+ {
+ if (recog_memoized (shift) == CODE_FOR_lshrhi3
+ && rtx_equal_p (SET_DEST (XVECEXP (PATTERN (shift), 0, 0)), reg)
+ && rtx_equal_p (XEXP (SET_SRC (XVECEXP (PATTERN (shift), 0, 0)), 0), reg))
+ break;
+
+ if (reg_mentioned_p (reg, shift)
+ || (GET_CODE (shift) != NOTE
+ && GET_CODE (shift) != INSN))
+ {
+ shift = NULL_RTX;
+ break;
+ }
+ }
+ }
+ }
+ if (!and)
+ return;
+
+ for (load = shift ? prev_real_insn (shift) : prev_real_insn (and);
+ load;
+ load = prev_real_insn (load))
+ {
+ int load_code = recog_memoized (load);
+
+ if (load_code == CODE_FOR_movhi_internal
+ && rtx_equal_p (SET_DEST (PATTERN (load)), reg)
+ && xstormy16_below100_operand (SET_SRC (PATTERN (load)), HImode)
+ && ! MEM_VOLATILE_P (SET_SRC (PATTERN (load))))
+ {
+ load_mode = HImode;
+ break;
+ }
+
+ if (load_code == CODE_FOR_movqi_internal
+ && rtx_equal_p (SET_DEST (PATTERN (load)), qireg)
+ && xstormy16_below100_operand (SET_SRC (PATTERN (load)), QImode))
+ {
+ load_mode = QImode;
+ break;
+ }
+
+ if (load_code == CODE_FOR_zero_extendqihi2
+ && rtx_equal_p (SET_DEST (PATTERN (load)), reg)
+ && xstormy16_below100_operand (XEXP (SET_SRC (PATTERN (load)), 0), QImode))
+ {
+ load_mode = QImode;
+ and_mode = HImode;
+ break;
+ }
+
+ if (reg_mentioned_p (reg, load))
+ return;
+
+ if (GET_CODE (load) != NOTE
+ && GET_CODE (load) != INSN)
+ return;
+ }
+ if (!load)
+ return;
+
+ mem = SET_SRC (PATTERN (load));
+
+ if (need_extend)
+ {
+ mask = (load_mode == HImode) ? 0x8000 : 0x80;
+
+ /* If the mem includes a zero-extend operation and we are
+ going to generate a sign-extend operation then move the
+ mem inside the zero-extend. */
+ if (GET_CODE (mem) == ZERO_EXTEND)
+ mem = XEXP (mem, 0);
+ }
+ else
+ {
+ if (!xstormy16_onebit_set_operand (XEXP (SET_SRC (PATTERN (and)), 1), load_mode))
+ return;
+
+ mask = (int) INTVAL (XEXP (SET_SRC (PATTERN (and)), 1));
+
+ if (shift)
+ mask <<= INTVAL (XEXP (SET_SRC (XVECEXP (PATTERN (shift), 0, 0)), 1));
+ }
+
+ if (load_mode == HImode)
+ {
+ rtx addr = XEXP (mem, 0);
+
+ if (! (mask & 0xff))
+ {
+ addr = plus_constant (addr, 1);
+ mask >>= 8;
+ }
+ mem = gen_rtx_MEM (QImode, addr);
+ }
+
+ if (need_extend)
+ XEXP (cond, 0) = gen_rtx_SIGN_EXTEND (HImode, mem);
+ else
+ XEXP (cond, 0) = gen_rtx_AND (and_mode, mem, GEN_INT (mask));
+
+ INSN_CODE (insn) = -1;
+ delete_insn (load);
+
+ if (and != insn)
+ delete_insn (and);
+
+ if (shift != NULL_RTX)
+ delete_insn (shift);
+}
+
+static void
+xstormy16_reorg (void)
+{
+ rtx insn;
+
+ for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
+ {
+ if (! JUMP_P (insn))
+ continue;
+ combine_bnp (insn);
+ }
+}
+
\f
+/* Worker function for TARGET_RETURN_IN_MEMORY. */
+
+static bool
+xstormy16_return_in_memory (tree type, tree fntype ATTRIBUTE_UNUSED)
+{
+ HOST_WIDE_INT size = int_size_in_bytes (type);
+ return (size == -1 || size > UNITS_PER_WORD * NUM_ARGUMENT_REGISTERS);
+}
+\f
+#undef TARGET_ASM_ALIGNED_HI_OP
+#define TARGET_ASM_ALIGNED_HI_OP "\t.hword\t"
+#undef TARGET_ASM_ALIGNED_SI_OP
+#define TARGET_ASM_ALIGNED_SI_OP "\t.word\t"
+#undef TARGET_ENCODE_SECTION_INFO
+#define TARGET_ENCODE_SECTION_INFO xstormy16_encode_section_info
+
+#undef TARGET_ASM_OUTPUT_MI_THUNK
+#define TARGET_ASM_OUTPUT_MI_THUNK xstormy16_asm_output_mi_thunk
+#undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
+#define TARGET_ASM_CAN_OUTPUT_MI_THUNK default_can_output_mi_thunk_no_vcall
+
+#undef TARGET_RTX_COSTS
+#define TARGET_RTX_COSTS xstormy16_rtx_costs
+#undef TARGET_ADDRESS_COST
+#define TARGET_ADDRESS_COST xstormy16_address_cost
+
+#undef TARGET_BUILD_BUILTIN_VA_LIST
+#define TARGET_BUILD_BUILTIN_VA_LIST xstormy16_build_builtin_va_list
+#undef TARGET_GIMPLIFY_VA_ARG_EXPR
+#define TARGET_GIMPLIFY_VA_ARG_EXPR xstormy16_expand_builtin_va_arg
+
+#undef TARGET_PROMOTE_FUNCTION_ARGS
+#define TARGET_PROMOTE_FUNCTION_ARGS hook_bool_tree_true
+#undef TARGET_PROMOTE_FUNCTION_RETURN
+#define TARGET_PROMOTE_FUNCTION_RETURN hook_bool_tree_true
+#undef TARGET_PROMOTE_PROTOTYPES
+#define TARGET_PROMOTE_PROTOTYPES hook_bool_tree_true
+
+#undef TARGET_RETURN_IN_MEMORY
+#define TARGET_RETURN_IN_MEMORY xstormy16_return_in_memory
+
+#undef TARGET_MACHINE_DEPENDENT_REORG
+#define TARGET_MACHINE_DEPENDENT_REORG xstormy16_reorg
+
struct gcc_target targetm = TARGET_INITIALIZER;
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