src/jit/decomposelongs.h

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 /*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
   7 XX                                                                           XX
   8 XX                               DecomposeLongs                              XX
   9 XX                                                                           XX
  10 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  11 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  12 */
  13
  14 #ifndef _DECOMPOSELONGS_H_
  15 #define _DECOMPOSELONGS_H_
  16
  17 #include "compiler.h"
  18
  19 class DecomposeLongs
  20 {
  21 public:
  22     DecomposeLongs(Compiler* compiler) : m_compiler(compiler)
  23     {
  24     }
  25
  26     void PrepareForDecomposition();
  27     void DecomposeBlock(BasicBlock* block);
  28
  29     static void DecomposeRange(Compiler* compiler, unsigned blockWeight, LIR::Range& range);
  30
  31 private:
  32     inline LIR::Range& Range() const
  33     {
  34         return *m_range;
  35     }
  36
  37     // Driver functions
  38     void     DecomposeRangeHelper();
  39     GenTree* DecomposeNode(GenTree* tree);
  40
  41     // Per-node type decompose cases
  42     GenTree* DecomposeLclVar(LIR::Use& use);
  43     GenTree* DecomposeLclFld(LIR::Use& use);
  44     GenTree* DecomposeStoreLclVar(LIR::Use& use);
  45     GenTree* DecomposeStoreLclFld(LIR::Use& use);
  46     GenTree* DecomposeCast(LIR::Use& use);
  47     GenTree* DecomposeCnsLng(LIR::Use& use);
  48     GenTree* DecomposeFieldList(GenTreeFieldList* listNode, GenTreeOp* longNode);
  49     GenTree* DecomposeCall(LIR::Use& use);
  50     GenTree* DecomposeInd(LIR::Use& use);
  51     GenTree* DecomposeStoreInd(LIR::Use& use);
  52     GenTree* DecomposeNot(LIR::Use& use);
  53     GenTree* DecomposeNeg(LIR::Use& use);
  54     GenTree* DecomposeArith(LIR::Use& use);
  55     GenTree* DecomposeShift(LIR::Use& use);
  56     GenTree* DecomposeRotate(LIR::Use& use);
  57     GenTree* DecomposeMul(LIR::Use& use);
  58     GenTree* DecomposeUMod(LIR::Use& use);
  59     GenTree* DecomposeSimd(LIR::Use& use);
  60     GenTree* DecomposeSimdGetItem(LIR::Use& use);
  61
  62     // Helper functions
  63     GenTree* FinalizeDecomposition(LIR::Use& use, GenTree* loResult, GenTree* hiResult, GenTree* insertResultAfter);
  64     GenTree* RepresentOpAsLocalVar(GenTree* op, GenTree* user, GenTree** edge);
  65     GenTree* EnsureIntSized(GenTree* node, bool signExtend);
  66
  67     GenTree* StoreNodeToVar(LIR::Use& use);
  68     static genTreeOps GetHiOper(genTreeOps oper);
  69     static genTreeOps GetLoOper(genTreeOps oper);
  70
  71     // Data
  72     Compiler*   m_compiler;
  73     unsigned    m_blockWeight;
  74     LIR::Range* m_range;
  75 };
  76
  77 #endif // _DECOMPOSELONGS_H_