diff options
Diffstat (limited to 'gcc/data-streamer-in.cc')
| -rw-r--r-- | gcc/data-streamer-in.cc | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/data-streamer-in.cc b/gcc/data-streamer-in.cc index 8ebcac43479..07728bef413 100644 --- a/gcc/data-streamer-in.cc +++ b/gcc/data-streamer-in.cc @@ -28,6 +28,8 @@ along with GCC; see the file COPYING3. If not see #include "gimple.h" #include "cgraph.h" #include "data-streamer.h" +#include "value-range.h" +#include "streamer-hooks.h" /* Read a string from the string table in DATA_IN using input block IB. Write the length to RLEN. */ @@ -206,6 +208,59 @@ streamer_read_gcov_count (class lto_input_block *ib) return ret; } +/* Read REAL_VALUE_TYPE from IB. */ + +void +streamer_read_real_value (class lto_input_block *ib, REAL_VALUE_TYPE *r) +{ + struct bitpack_d bp = streamer_read_bitpack (ib); + bp_unpack_real_value (&bp, r); +} + +void +streamer_read_value_range (class lto_input_block *ib, data_in *data_in, + Value_Range &vr) +{ + // Read the common fields to all vranges. + value_range_kind kind = streamer_read_enum (ib, value_range_kind, VR_LAST); + gcc_checking_assert (kind != VR_UNDEFINED); + tree type = stream_read_tree (ib, data_in); + + // Initialize the Value_Range to the correct type. + vr.set_type (type); + + if (is_a <irange> (vr)) + { + irange &r = as_a <irange> (vr); + r.set_undefined (); + unsigned HOST_WIDE_INT num_pairs = streamer_read_uhwi (ib); + for (unsigned i = 0; i < num_pairs; ++i) + { + wide_int lb = streamer_read_wide_int (ib); + wide_int ub = streamer_read_wide_int (ib); + int_range<2> tmp (type, lb, ub); + r.union_ (tmp); + } + wide_int nz = streamer_read_wide_int (ib); + r.set_nonzero_bits (nz); + return; + } + if (is_a <frange> (vr)) + { + frange &r = as_a <frange> (vr); + REAL_VALUE_TYPE lb, ub; + streamer_read_real_value (ib, &lb); + streamer_read_real_value (ib, &ub); + struct bitpack_d bp = streamer_read_bitpack (ib); + bool pos_nan = (bool) bp_unpack_value (&bp, 1); + bool neg_nan = (bool) bp_unpack_value (&bp, 1); + nan_state nan (pos_nan, neg_nan); + r.set (type, lb, ub, nan); + return; + } + gcc_unreachable (); +} + /* Read the physical representation of a wide_int val from input block IB. */ |