dfg/DFGNodeFlags.cpp

   1 /*
   2  * Copyright (C) 2012 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "DFGNodeFlags.h"
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include <wtf/BoundsCheckedPointer.h>
  32
  33 namespace JSC { namespace DFG {
  34
  35 const char* nodeFlagsAsString(NodeFlags flags)
  36 {
  37     if (!flags)
  38         return "<empty>";
  39
  40     static const int size = 128;
  41     static char description[size];
  42     BoundsCheckedPointer<char> ptr(description, size);
  43
  44     bool hasPrinted = false;
  45
  46     if (flags & NodeResultMask) {
  47         switch (flags & NodeResultMask) {
  48         case NodeResultJS:
  49             ptr.strcat("ResultJS");
  50             break;
  51         case NodeResultNumber:
  52             ptr.strcat("ResultNumber");
  53             break;
  54         case NodeResultInt32:
  55             ptr.strcat("ResultInt32");
  56             break;
  57         case NodeResultBoolean:
  58             ptr.strcat("ResultBoolean");
  59             break;
  60         case NodeResultStorage:
  61             ptr.strcat("ResultStorage");
  62             break;
  63         default:
  64             ASSERT_NOT_REACHED();
  65             break;
  66         }
  67         hasPrinted = true;
  68     }
  69
  70     if (flags & NodeMustGenerate) {
  71         if (hasPrinted)
  72             ptr.strcat("|");
  73         ptr.strcat("MustGenerate");
  74         hasPrinted = true;
  75     }
  76
  77     if (flags & NodeHasVarArgs) {
  78         if (hasPrinted)
  79             ptr.strcat("|");
  80         ptr.strcat("HasVarArgs");
  81         hasPrinted = true;
  82     }
  83
  84     if (flags & NodeClobbersWorld) {
  85         if (hasPrinted)
  86             ptr.strcat("|");
  87         ptr.strcat("ClobbersWorld");
  88         hasPrinted = true;
  89     }
  90
  91     if (flags & NodeMightClobber) {
  92         if (hasPrinted)
  93             ptr.strcat("|");
  94         ptr.strcat("MightClobber");
  95         hasPrinted = true;
  96     }
  97
  98     if (flags & NodeUsedAsNumber) {
  99         if (hasPrinted)
 100             ptr.strcat("|");
 101         ptr.strcat("UsedAsNum");
 102         hasPrinted = true;
 103     }
 104
 105     if (flags & NodeNeedsNegZero) {
 106         if (hasPrinted)
 107             ptr.strcat("|");
 108         ptr.strcat("NeedsNegZero");
 109         hasPrinted = true;
 110     }
 111
 112     if (flags & NodeMayOverflow) {
 113         if (hasPrinted)
 114             ptr.strcat("|");
 115         ptr.strcat("MayOverflow");
 116         hasPrinted = true;
 117     }
 118
 119     if (flags & NodeMayNegZero) {
 120         if (hasPrinted)
 121             ptr.strcat("|");
 122         ptr.strcat("MayNegZero");
 123         hasPrinted = true;
 124     }
 125
 126     if (flags & NodeUsedAsInt) {
 127         if (hasPrinted)
 128             ptr.strcat("|");
 129         ptr.strcat("UsedAsInt");
 130         hasPrinted = true;
 131     }
 132
 133     *ptr++ = 0;
 134
 135     return description;
 136 }
 137
 138
 139 } } // namespace JSC::DFG
 140
 141 #endif // ENABLE(DFG_JIT)
 142