src/jit/ssaconfig.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 // ==++==
   6 //
   7
   8 //
   9
  10 //
  11 // ==--==
  12
  13 /*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  14 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  15 XX                                                                           XX
  16 XX                                  SSA                                      XX
  17 XX                                                                           XX
  18 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  19 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  20 */
  21
  22 #pragma once
  23
  24 #ifdef DEBUG
  25 #define DBG_SSA_JITDUMP(...)                                                                                           \
  26     if (JitTls::GetCompiler()->verboseSsa)                                                                             \
  27     logf(__VA_ARGS__)
  28 #else
  29 #define DBG_SSA_JITDUMP(...)
  30 #endif
  31
  32 // DBG_SSA_JITDUMP prints only if DEBUG, DEBUG_SSA, and tlsCompiler->verbose are all set.
  33
  34 namespace SsaConfig
  35 {
  36 // FIRST ssa num is given to the first definition of a variable which can either be:
  37 // 1. A regular definition in the program.
  38 // 2. Or initialization by compInitMem.
  39 static const int FIRST_SSA_NUM = 2;
  40
  41 // UNINIT ssa num is given to variables whose definitions were never encountered:
  42 // 1. Neither by SsaBuilder
  43 // 2. Nor were they initialized using compInitMem.
  44 static const int UNINIT_SSA_NUM = 1;
  45
  46 // Sentinel value to indicate variable not touched by SSA.
  47 static const int RESERVED_SSA_NUM = 0;
  48
  49 } // end of namespace SsaConfig