Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * vim: set ts=8 sts=4 et sw=4 tw=99:
       3             :  *
       4             :  * Copyright 2016 Mozilla Foundation
       5             :  *
       6             :  * Licensed under the Apache License, Version 2.0 (the "License");
       7             :  * you may not use this file except in compliance with the License.
       8             :  * You may obtain a copy of the License at
       9             :  *
      10             :  *     http://www.apache.org/licenses/LICENSE-2.0
      11             :  *
      12             :  * Unless required by applicable law or agreed to in writing, software
      13             :  * distributed under the License is distributed on an "AS IS" BASIS,
      14             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      15             :  * See the License for the specific language governing permissions and
      16             :  * limitations under the License.
      17             :  */
      18             : 
      19             : #ifndef asmjs_wasm_baseline_compile_h
      20             : #define asmjs_wasm_baseline_compile_h
      21             : 
      22             : #include "wasm/WasmGenerator.h"
      23             : #include "wasm/WasmTypes.h"
      24             : 
      25             : namespace js {
      26             : namespace wasm {
      27             : 
      28             : class CompileTask;
      29             : class FuncCompileUnit;
      30             : 
      31             : // Return whether BaselineCompileFunction can generate code on the current device.
      32             : // Note: asm.js is also currently not supported due to Atomics and SIMD.
      33             : bool
      34             : BaselineCanCompile();
      35             : 
      36             : // Generate adequate code quickly.
      37             : bool
      38             : BaselineCompileFunction(CompileTask* task, FuncCompileUnit* unit, UniqueChars* error);
      39             : 
      40             : class BaseLocalIter
      41             : {
      42             :   private:
      43             :     using ConstValTypeRange = mozilla::Range<const ValType>;
      44             : 
      45             :     const ValTypeVector&               locals_;
      46             :     size_t                             argsLength_;
      47             :     ConstValTypeRange                  argsRange_; // range struct cache for ABIArgIter
      48             :     jit::ABIArgIter<ConstValTypeRange> argsIter_;
      49             :     size_t                             index_;
      50             :     int32_t                            localSize_;
      51             :     int32_t                            reservedSize_;
      52             :     int32_t                            frameOffset_;
      53             :     jit::MIRType                       mirType_;
      54             :     bool                               done_;
      55             : 
      56             :     void settle();
      57             :     int32_t pushLocal(size_t nbytes);
      58             : 
      59             :   public:
      60             :     BaseLocalIter(const ValTypeVector& locals, size_t argsLength, bool debugEnabled);
      61             :     void operator++(int);
      62           0 :     bool done() const { return done_; }
      63             : 
      64           0 :     jit::MIRType mirType() const { MOZ_ASSERT(!done_); return mirType_; }
      65           0 :     int32_t frameOffset() const { MOZ_ASSERT(!done_); return frameOffset_; }
      66           0 :     size_t index() const { MOZ_ASSERT(!done_); return index_; }
      67           0 :     int32_t currentLocalSize() const { return localSize_; }
      68           0 :     int32_t reservedSize() const { return reservedSize_; }
      69             : 
      70             : #ifdef DEBUG
      71           0 :     bool isArg() const { MOZ_ASSERT(!done_); return !argsIter_.done(); }
      72             : #endif
      73             : };
      74             : 
      75             : } // namespace wasm
      76             : } // namespace js
      77             : 
      78             : #endif // asmjs_wasm_baseline_compile_h