107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
/* RTL hash functions.
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Copyright (C) 1987-2016 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "rtl.h"
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#include "rtlhash.h"
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namespace inchash
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{
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/* Iteratively hash rtx X into HSTATE. */
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void
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add_rtx (const_rtx x, hash &hstate)
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{
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enum rtx_code code;
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machine_mode mode;
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int i, j;
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const char *fmt;
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if (x == NULL_RTX)
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return;
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code = GET_CODE (x);
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hstate.add_object (code);
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mode = GET_MODE (x);
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hstate.add_object (mode);
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switch (code)
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{
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case REG:
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hstate.add_int (REGNO (x));
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return;
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case CONST_INT:
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hstate.add_object (INTVAL (x));
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return;
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case CONST_WIDE_INT:
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for (i = 0; i < CONST_WIDE_INT_NUNITS (x); i++)
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hstate.add_object (CONST_WIDE_INT_ELT (x, i));
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return;
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case SYMBOL_REF:
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if (XSTR (x, 0))
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hstate.add (XSTR (x, 0), strlen (XSTR (x, 0)) + 1);
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return;
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case LABEL_REF:
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case DEBUG_EXPR:
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case VALUE:
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case SCRATCH:
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case CONST_DOUBLE:
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case CONST_FIXED:
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case DEBUG_IMPLICIT_PTR:
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case DEBUG_PARAMETER_REF:
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return;
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default:
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break;
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}
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fmt = GET_RTX_FORMAT (code);
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for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
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switch (fmt[i])
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{
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case 'w':
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hstate.add_object (XWINT (x, i));
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break;
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case 'n':
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case 'i':
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hstate.add_object (XINT (x, i));
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break;
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case 'V':
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case 'E':
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j = XVECLEN (x, i);
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hstate.add_int (j);
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for (j = 0; j < XVECLEN (x, i); j++)
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inchash::add_rtx (XVECEXP (x, i, j), hstate);
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break;
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case 'e':
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inchash::add_rtx (XEXP (x, i), hstate);
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break;
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case 'S':
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case 's':
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if (XSTR (x, i))
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hstate.add (XSTR (x, 0), strlen (XSTR (x, 0)) + 1);
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break;
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default:
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break;
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}
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}
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}
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