Line data    Source code

       1              : /* Generic streaming support for basic data types.
       2              : 
       3              :    Copyright (C) 2011-2026 Free Software Foundation, Inc.
       4              :    Contributed by Diego Novillo <dnovillo@google.com>
       5              : 
       6              : This file is part of GCC.
       7              : 
       8              : GCC is free software; you can redistribute it and/or modify it under
       9              : the terms of the GNU General Public License as published by the Free
      10              : Software Foundation; either version 3, or (at your option) any later
      11              : version.
      12              : 
      13              : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      14              : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      15              : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      16              : for more details.
      17              : 
      18              : You should have received a copy of the GNU General Public License
      19              : along with GCC; see the file COPYING3.  If not see
      20              : <http://www.gnu.org/licenses/>.  */
      21              : 
      22              : #include "config.h"
      23              : #include "system.h"
      24              : #include "coretypes.h"
      25              : #include "backend.h"
      26              : #include "tree.h"
      27              : #include "gimple.h"
      28              : #include "cgraph.h"
      29              : #include "data-streamer.h"
      30              : 
      31              : /* For offloading -- While streaming-out, host NUM_POLY_INT_COEFFS is
      32              :    stored at beginning of mode_table.  While streaming-in, the value is read
      33              :    in host_num_poly_int_coeffs.  */
      34              : 
      35              : #ifdef ACCEL_COMPILER
      36              : unsigned host_num_poly_int_coeffs = 0;
      37              : #endif
      38              : 
      39              : /* Pack WORK into BP in a variant of uleb format.  */
      40              : 
      41              : void
      42     14734805 : bp_pack_var_len_unsigned (struct bitpack_d *bp, unsigned HOST_WIDE_INT work)
      43              : {
      44     29745973 :   do
      45              :     {
      46     29745973 :       unsigned int half_byte = (work & 0x7);
      47     29745973 :       work >>= 3;
      48     29745973 :       if (work != 0)
      49              :         /* More half_bytes to follow.  */
      50     15011168 :         half_byte |= 0x8;
      51              : 
      52     29745973 :       bp_pack_value (bp, half_byte, 4);
      53              :     }
      54     29745973 :   while (work != 0);
      55     14734805 : }
      56              : 
      57              : 
      58              : /* Pack WORK into BP in a variant of sleb format.  */
      59              : 
      60              : void
      61     16784840 : bp_pack_var_len_int (struct bitpack_d *bp, HOST_WIDE_INT work)
      62              : {
      63     18765167 :   int more, half_byte;
      64              : 
      65     18765167 :   do
      66              :     {
      67     18765167 :       half_byte = (work & 0x7);
      68              :       /* arithmetic shift */
      69     18765167 :       work >>= 3;
      70     18765167 :       more = !((work == 0 && (half_byte & 0x4) == 0)
      71       316411 :                || (work == -1 && (half_byte & 0x4) != 0));
      72              :       if (more)
      73      1980327 :         half_byte |= 0x8;
      74              : 
      75     18765167 :       bp_pack_value (bp, half_byte, 4);
      76              :     }
      77     18765167 :   while (more);
      78     16784840 : }
      79              : 
      80              : 
      81              : /* Unpack VAL from BP in a variant of uleb format.  */
      82              : 
      83              : unsigned HOST_WIDE_INT
      84     11390170 : bp_unpack_var_len_unsigned (struct bitpack_d *bp)
      85              : {
      86     11390170 :   unsigned HOST_WIDE_INT result = 0;
      87     11390170 :   int shift = 0;
      88     23117334 :   unsigned HOST_WIDE_INT half_byte;
      89              : 
      90     23117334 :   while (true)
      91              :     {
      92     23117334 :       half_byte = bp_unpack_value (bp, 4);
      93     23117334 :       result |= (half_byte & 0x7) << shift;
      94     23117334 :       shift += 3;
      95     23117334 :       if ((half_byte & 0x8) == 0)
      96     11390170 :         return result;
      97              :     }
      98              : }
      99              : 
     100              : 
     101              : /* Unpack VAL from BP in a variant of sleb format.  */
     102              : 
     103              : HOST_WIDE_INT
     104     11703880 : bp_unpack_var_len_int (struct bitpack_d *bp)
     105              : {
     106     11703880 :   HOST_WIDE_INT result = 0;
     107     11703880 :   int shift = 0;
     108     13090959 :   unsigned HOST_WIDE_INT half_byte;
     109              : 
     110     13090959 :   while (true)
     111              :     {
     112     13090959 :       half_byte = bp_unpack_value (bp, 4);
     113     13090959 :       result |= (half_byte & 0x7) << shift;
     114     13090959 :       shift += 3;
     115     13090959 :       if ((half_byte & 0x8) == 0)
     116              :         {
     117     11703880 :           if ((shift < HOST_BITS_PER_WIDE_INT) && (half_byte & 0x4))
     118       220592 :             result |= - (HOST_WIDE_INT_1U << shift);
     119              : 
     120     11703880 :           return result;
     121              :         }
     122              :     }
     123              : }
     124              : 
     125              : /* Pack REAL_VALUE_TYPE R into BP.  */
     126              : 
     127              : void
     128       114294 : bp_pack_real_value (struct bitpack_d *bp, const REAL_VALUE_TYPE *r)
     129              : {
     130       114294 :   bp_pack_value (bp, r->cl, 2);
     131       114294 :   bp_pack_value (bp, r->decimal, 1);
     132       114294 :   bp_pack_value (bp, r->sign, 1);
     133       114294 :   bp_pack_value (bp, r->signalling, 1);
     134       114294 :   bp_pack_value (bp, r->canonical, 1);
     135       114294 :   bp_pack_value (bp, r->uexp, EXP_BITS);
     136       457176 :   for (unsigned i = 0; i < SIGSZ; i++)
     137       342882 :     bp_pack_value (bp, r->sig[i], HOST_BITS_PER_LONG);
     138       114294 : }
     139              : 
     140              : /* Unpack REAL_VALUE_TYPE R from BP.  */
     141              : 
     142              : void
     143       104420 : bp_unpack_real_value (struct bitpack_d *bp, REAL_VALUE_TYPE *r)
     144              : {
     145              :   /* Clear all bits of the real value type so that we can later do
     146              :      bitwise comparisons to see if two values are the same.  */
     147       104420 :   memset (r, 0, sizeof (*r));
     148       104420 :   r->cl = (unsigned) bp_unpack_value (bp, 2);
     149       104420 :   r->decimal = (unsigned) bp_unpack_value (bp, 1);
     150       104420 :   r->sign = (unsigned) bp_unpack_value (bp, 1);
     151       104420 :   r->signalling = (unsigned) bp_unpack_value (bp, 1);
     152       104420 :   r->canonical = (unsigned) bp_unpack_value (bp, 1);
     153       104420 :   r->uexp = (unsigned) bp_unpack_value (bp, EXP_BITS);
     154       417680 :   for (unsigned i = 0; i < SIGSZ; i++)
     155       313260 :     r->sig[i] = (unsigned long) bp_unpack_value (bp, HOST_BITS_PER_LONG);
     156       104420 : }