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Diffstat (limited to 'lib/gcc/arm-none-eabi/13.2.1/plugin/include/data-streamer.h')
| -rw-r--r-- | lib/gcc/arm-none-eabi/13.2.1/plugin/include/data-streamer.h | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/lib/gcc/arm-none-eabi/13.2.1/plugin/include/data-streamer.h b/lib/gcc/arm-none-eabi/13.2.1/plugin/include/data-streamer.h new file mode 100644 index 0000000..d8c7e21 --- /dev/null +++ b/lib/gcc/arm-none-eabi/13.2.1/plugin/include/data-streamer.h @@ -0,0 +1,349 @@ +/* Generic streaming support for various data types. + + Copyright (C) 2011-2023 Free Software Foundation, Inc. + Contributed by Diego Novillo <dnovillo@google.com> + +This file is part of GCC. + +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 3, or (at your option) any later +version. + +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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_DATA_STREAMER_H +#define GCC_DATA_STREAMER_H + +#include "lto-streamer.h" + +/* Data structures used to pack values and bitflags into a vector of + words. Used to stream values of a fixed number of bits in a space + efficient way. */ +static unsigned const BITS_PER_BITPACK_WORD = HOST_BITS_PER_WIDE_INT; + +typedef unsigned HOST_WIDE_INT bitpack_word_t; + +struct bitpack_d +{ + /* The position of the first unused or unconsumed bit in the word. */ + unsigned pos; + + /* The current word we are (un)packing. */ + bitpack_word_t word; + + /* The lto_output_stream or the lto_input_block we are streaming to/from. */ + void *stream; +}; + +/* In data-streamer.cc */ +void bp_pack_var_len_unsigned (struct bitpack_d *, unsigned HOST_WIDE_INT); +void bp_pack_var_len_int (struct bitpack_d *, HOST_WIDE_INT); +unsigned HOST_WIDE_INT bp_unpack_var_len_unsigned (struct bitpack_d *); +HOST_WIDE_INT bp_unpack_var_len_int (struct bitpack_d *); + +/* In data-streamer-out.cc */ +void streamer_write_zero (struct output_block *); +void streamer_write_uhwi (struct output_block *, unsigned HOST_WIDE_INT); +void streamer_write_hwi (struct output_block *, HOST_WIDE_INT); +void streamer_write_poly_uint64 (struct output_block *, poly_uint64); +void streamer_write_poly_int64 (struct output_block *, poly_int64); +void streamer_write_gcov_count (struct output_block *, gcov_type); +void streamer_write_string (struct output_block *, struct lto_output_stream *, + const char *, bool); +void streamer_write_string_with_length (struct output_block *, + struct lto_output_stream *, + const char *, unsigned int, bool); +void bp_pack_string_with_length (struct output_block *, struct bitpack_d *, + const char *, unsigned int, bool); +void bp_pack_string (struct output_block *, struct bitpack_d *, + const char *, bool); +void streamer_write_uhwi_stream (struct lto_output_stream *, + unsigned HOST_WIDE_INT); +void streamer_write_hwi_stream (struct lto_output_stream *, HOST_WIDE_INT); +void streamer_write_gcov_count_stream (struct lto_output_stream *, gcov_type); +void streamer_write_data_stream (struct lto_output_stream *, const void *, + size_t); +void streamer_write_wide_int (struct output_block *, const wide_int &); +void streamer_write_widest_int (struct output_block *, const widest_int &); + +/* In data-streamer-in.cc */ +const char *streamer_read_string (class data_in *, class lto_input_block *); +const char *streamer_read_indexed_string (class data_in *, + class lto_input_block *, + unsigned int *); +const char *bp_unpack_indexed_string (class data_in *, struct bitpack_d *, + unsigned int *); +const char *bp_unpack_string (class data_in *, struct bitpack_d *); +unsigned HOST_WIDE_INT streamer_read_uhwi (class lto_input_block *); +HOST_WIDE_INT streamer_read_hwi (class lto_input_block *); +poly_uint64 streamer_read_poly_uint64 (class lto_input_block *); +poly_int64 streamer_read_poly_int64 (class lto_input_block *); +gcov_type streamer_read_gcov_count (class lto_input_block *); +wide_int streamer_read_wide_int (class lto_input_block *); +widest_int streamer_read_widest_int (class lto_input_block *); + +/* Returns a new bit-packing context for bit-packing into S. */ +inline struct bitpack_d +bitpack_create (struct lto_output_stream *s) +{ + struct bitpack_d bp; + bp.pos = 0; + bp.word = 0; + bp.stream = (void *)s; + return bp; +} + +/* Pack the NBITS bit sized value VAL into the bit-packing context BP. */ +inline void +bp_pack_value (struct bitpack_d *bp, bitpack_word_t val, unsigned nbits) +{ + bitpack_word_t word = bp->word; + int pos = bp->pos; + + /* Verify that VAL fits in the NBITS. */ + gcc_checking_assert (nbits == BITS_PER_BITPACK_WORD + || !(val & ~(((bitpack_word_t)1<<nbits)-1))); + + /* If val does not fit into the current bitpack word switch to the + next one. */ + if (pos + nbits > BITS_PER_BITPACK_WORD) + { + streamer_write_uhwi_stream ((struct lto_output_stream *) bp->stream, + word); + word = val; + pos = nbits; + } + else + { + word |= val << pos; + pos += nbits; + } + bp->word = word; + bp->pos = pos; +} + +/* Pack VAL into the bit-packing context BP, using NBITS for each + coefficient. */ +inline void +bp_pack_poly_value (struct bitpack_d *bp, + const poly_int<NUM_POLY_INT_COEFFS, bitpack_word_t> &val, + unsigned nbits) +{ + for (int i = 0; i < NUM_POLY_INT_COEFFS; ++i) + bp_pack_value (bp, val.coeffs[i], nbits); +} + +/* Finishes bit-packing of BP. */ +inline void +streamer_write_bitpack (struct bitpack_d *bp) +{ + streamer_write_uhwi_stream ((struct lto_output_stream *) bp->stream, + bp->word); + bp->word = 0; + bp->pos = 0; +} + +/* Returns a new bit-packing context for bit-unpacking from IB. */ +inline struct bitpack_d +streamer_read_bitpack (class lto_input_block *ib) +{ + struct bitpack_d bp; + bp.word = streamer_read_uhwi (ib); + bp.pos = 0; + bp.stream = (void *)ib; + return bp; +} + +/* Unpacks NBITS bits from the bit-packing context BP and returns them. */ +inline bitpack_word_t +bp_unpack_value (struct bitpack_d *bp, unsigned nbits) +{ + bitpack_word_t mask, val; + int pos = bp->pos; + + mask = (nbits == BITS_PER_BITPACK_WORD + ? (bitpack_word_t) -1 + : ((bitpack_word_t) 1 << nbits) - 1); + + /* If there are not continuous nbits in the current bitpack word + switch to the next one. */ + if (pos + nbits > BITS_PER_BITPACK_WORD) + { + bp->word = val + = streamer_read_uhwi ((class lto_input_block *)bp->stream); + bp->pos = nbits; + return val & mask; + } + val = bp->word; + val >>= pos; + bp->pos = pos + nbits; + + return val & mask; +} + +/* Unpacks a polynomial value from the bit-packing context BP in which each + coefficient has NBITS bits. */ +inline poly_int<NUM_POLY_INT_COEFFS, bitpack_word_t> +bp_unpack_poly_value (struct bitpack_d *bp, unsigned nbits) +{ + poly_int_pod<NUM_POLY_INT_COEFFS, bitpack_word_t> x; + for (int i = 0; i < NUM_POLY_INT_COEFFS; ++i) + x.coeffs[i] = bp_unpack_value (bp, nbits); + return x; +} + + +/* Write a character to the output block. */ + +inline void +streamer_write_char_stream (struct lto_output_stream *obs, char c) +{ + /* No space left. */ + if (obs->left_in_block == 0) + lto_append_block (obs); + + /* Write the actual character. */ + char *current_pointer = obs->current_pointer; + *(current_pointer++) = c; + obs->current_pointer = current_pointer; + obs->total_size++; + obs->left_in_block--; +} + + +/* Read byte from the input block. */ + +inline unsigned char +streamer_read_uchar (class lto_input_block *ib) +{ + if (ib->p >= ib->len) + lto_section_overrun (ib); + return (ib->data[ib->p++]); +} + +/* Output VAL into OBS and verify it is in range MIN...MAX that is supposed + to be compile time constant. + Be host independent, limit range to 31bits. */ + +inline void +streamer_write_hwi_in_range (struct lto_output_stream *obs, + HOST_WIDE_INT min, + HOST_WIDE_INT max, + HOST_WIDE_INT val) +{ + HOST_WIDE_INT range = max - min; + + gcc_checking_assert (val >= min && val <= max && range > 0 + && range < 0x7fffffff); + + val -= min; + streamer_write_uhwi_stream (obs, (unsigned HOST_WIDE_INT) val); +} + +/* Input VAL into OBS and verify it is in range MIN...MAX that is supposed + to be compile time constant. PURPOSE is used for error reporting. */ + +inline HOST_WIDE_INT +streamer_read_hwi_in_range (class lto_input_block *ib, + const char *purpose, + HOST_WIDE_INT min, + HOST_WIDE_INT max) +{ + HOST_WIDE_INT range = max - min; + unsigned HOST_WIDE_INT uval = streamer_read_uhwi (ib); + + gcc_checking_assert (range > 0 && range < 0x7fffffff); + + HOST_WIDE_INT val = (HOST_WIDE_INT) (uval + (unsigned HOST_WIDE_INT) min); + if (val < min || val > max) + lto_value_range_error (purpose, val, min, max); + return val; +} + +/* Output VAL into BP and verify it is in range MIN...MAX that is supposed + to be compile time constant. + Be host independent, limit range to 31bits. */ + +inline void +bp_pack_int_in_range (struct bitpack_d *bp, + HOST_WIDE_INT min, + HOST_WIDE_INT max, + HOST_WIDE_INT val) +{ + HOST_WIDE_INT range = max - min; + int nbits = floor_log2 (range) + 1; + + gcc_checking_assert (val >= min && val <= max && range > 0 + && range < 0x7fffffff); + + val -= min; + bp_pack_value (bp, val, nbits); +} + +/* Input VAL into BP and verify it is in range MIN...MAX that is supposed + to be compile time constant. PURPOSE is used for error reporting. */ + +inline HOST_WIDE_INT +bp_unpack_int_in_range (struct bitpack_d *bp, + const char *purpose, + HOST_WIDE_INT min, + HOST_WIDE_INT max) +{ + HOST_WIDE_INT range = max - min; + int nbits = floor_log2 (range) + 1; + HOST_WIDE_INT val = bp_unpack_value (bp, nbits); + + gcc_checking_assert (range > 0 && range < 0x7fffffff); + + if (val < min || val > max) + lto_value_range_error (purpose, val, min, max); + return val; +} + +/* Output VAL of type "enum enum_name" into OBS. + Assume range 0...ENUM_LAST - 1. */ +#define streamer_write_enum(obs,enum_name,enum_last,val) \ + streamer_write_hwi_in_range ((obs), 0, (int)(enum_last) - 1, (int)(val)) + +/* Input enum of type "enum enum_name" from IB. + Assume range 0...ENUM_LAST - 1. */ +#define streamer_read_enum(ib,enum_name,enum_last) \ + (enum enum_name)streamer_read_hwi_in_range ((ib), #enum_name, 0, \ + (int)(enum_last) - 1) + +/* Output VAL of type "enum enum_name" into BP. + Assume range 0...ENUM_LAST - 1. */ +#define bp_pack_enum(bp,enum_name,enum_last,val) \ + bp_pack_int_in_range ((bp), 0, (int)(enum_last) - 1, (int)(val)) + +/* Input enum of type "enum enum_name" from BP. + Assume range 0...ENUM_LAST - 1. */ +#define bp_unpack_enum(bp,enum_name,enum_last) \ + (enum enum_name)bp_unpack_int_in_range ((bp), #enum_name, 0, \ + (int)(enum_last) - 1) + +/* Output the start of a record with TAG to output block OB. */ + +inline void +streamer_write_record_start (struct output_block *ob, enum LTO_tags tag) +{ + streamer_write_enum (ob->main_stream, LTO_tags, LTO_NUM_TAGS, tag); +} + +/* Return the next tag in the input block IB. */ + +inline enum LTO_tags +streamer_read_record_start (class lto_input_block *ib) +{ + return streamer_read_enum (ib, LTO_tags, LTO_NUM_TAGS); +} + +#endif /* GCC_DATA_STREAMER_H */ |