Line data    Source code

       1              : // Copyright (C) 2026 Free Software Foundation, Inc.
       2              : 
       3              : // This file is part of GCC.
       4              : 
       5              : // GCC is free software; you can redistribute it and/or modify it under
       6              : // the terms of the GNU General Public License as published by the Free
       7              : // Software Foundation; either version 3, or (at your option) any later
       8              : // version.
       9              : 
      10              : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11              : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12              : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13              : // for more details.
      14              : 
      15              : // You should have received a copy of the GNU General Public License
      16              : // along with GCC; see the file COPYING3.  If not see
      17              : // <http://www.gnu.org/licenses/>.
      18              : 
      19              : #include "rust-compile-drop-builder.h"
      20              : #include "rust-compile-context.h"
      21              : #include "rust-bir-drop-analysis.h"
      22              : 
      23              : namespace Rust {
      24              : namespace Compile {
      25              : 
      26        65477 : DropBuilder::DropBuilder (Context &ctx) : ctx (ctx) {}
      27              : 
      28              : void
      29           63 : DropBuilder::note_simple_drop_candidate (HirId hirid, location_t locus)
      30              : {
      31           63 :   rust_assert (!ctx.block_drop_candidates.empty ());
      32           63 :   ctx.block_drop_candidates.back ().emplace_back (hirid, locus);
      33           63 : }
      34              : 
      35              : void
      36           55 : DropBuilder::maybe_create_drop_flag (HirId hirid, location_t locus,
      37              :                                      bool initialized)
      38              : {
      39           55 :   if (!BIR::DropAnalysis::get ().needs_drop_flag (hirid))
      40           54 :     return;
      41              : 
      42            1 :   Bvariable *existing = nullptr;
      43            1 :   if (ctx.lookup_drop_flag (hirid, &existing))
      44              :     return;
      45              : 
      46            1 :   tree declaration = nullptr;
      47            2 :   Bvariable *flag = Backend::temporary_variable (
      48            1 :     ctx.peek_fn ().fndecl, nullptr, boolean_type_node,
      49              :     Backend::boolean_constant_expression (initialized), false, locus,
      50              :     &declaration);
      51            1 :   ctx.add_statement (declaration);
      52            1 :   ctx.insert_drop_flag (hirid, flag);
      53              : }
      54              : 
      55              : tree
      56        11956 : DropBuilder::drop_flag_assignment (HirId hirid, bool value, location_t locus)
      57              : {
      58        11956 :   Bvariable *flag = nullptr;
      59        11956 :   if (!ctx.lookup_drop_flag (hirid, &flag))
      60              :     return nullptr;
      61              : 
      62            3 :   return Backend::assignment_statement (Backend::var_expression (flag, locus),
      63              :                                         Backend::boolean_constant_expression (
      64              :                                           value),
      65            3 :                                         locus);
      66              : }
      67              : 
      68              : std::vector<DropCandidate> &
      69        39244 : DropBuilder::peek_block_drop_candidates ()
      70              : {
      71        39244 :   rust_assert (!ctx.block_drop_candidates.empty ());
      72        39244 :   return ctx.block_drop_candidates.back ();
      73              : }
      74              : 
      75              : } // namespace Compile
      76              : } // namespace Rust