dfg/DFGCommon.cpp

   1 /*
   2  * Copyright (C) 2013-2015 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 "DFGCommon.h"
  28
  29 #include "DFGNode.h"
  30 #include "JSCInlines.h"
  31 #include <wtf/PrintStream.h>
  32
  33 #if ENABLE(DFG_JIT)
  34
  35 namespace JSC { namespace DFG {
  36
  37 static StaticSpinLock crashLock;
  38
  39 void startCrashing()
  40 {
  41     crashLock.lock();
  42 }
  43
  44 bool isCrashing()
  45 {
  46     return crashLock.isLocked();
  47 }
  48
  49 bool stringLessThan(StringImpl& a, StringImpl& b)
  50 {
  51     unsigned minLength = std::min(a.length(), b.length());
  52     for (unsigned i = 0; i < minLength; ++i) {
  53         if (a[i] == b[i])
  54             continue;
  55         return a[i] < b[i];
  56     }
  57     return a.length() < b.length();
  58 }
  59
  60 } } // namespace JSC::DFG
  61
  62 namespace WTF {
  63
  64 using namespace JSC::DFG;
  65
  66 void printInternal(PrintStream& out, OptimizationFixpointState state)
  67 {
  68     switch (state) {
  69     case BeforeFixpoint:
  70         out.print("BeforeFixpoint");
  71         return;
  72     case FixpointNotConverged:
  73         out.print("FixpointNotConverged");
  74         return;
  75     case FixpointConverged:
  76         out.print("FixpointConverged");
  77         return;
  78     }
  79     RELEASE_ASSERT_NOT_REACHED();
  80 }
  81
  82 void printInternal(PrintStream& out, GraphForm form)
  83 {
  84     switch (form) {
  85     case LoadStore:
  86         out.print("LoadStore");
  87         return;
  88     case ThreadedCPS:
  89         out.print("ThreadedCPS");
  90         return;
  91     case SSA:
  92         out.print("SSA");
  93         return;
  94     }
  95     RELEASE_ASSERT_NOT_REACHED();
  96 }
  97
  98 void printInternal(PrintStream& out, UnificationState state)
  99 {
 100     switch (state) {
 101     case LocallyUnified:
 102         out.print("LocallyUnified");
 103         return;
 104     case GloballyUnified:
 105         out.print("GloballyUnified");
 106         return;
 107     }
 108     RELEASE_ASSERT_NOT_REACHED();
 109 }
 110
 111 void printInternal(PrintStream& out, RefCountState state)
 112 {
 113     switch (state) {
 114     case EverythingIsLive:
 115         out.print("EverythingIsLive");
 116         return;
 117     case ExactRefCount:
 118         out.print("ExactRefCount");
 119         return;
 120     }
 121     RELEASE_ASSERT_NOT_REACHED();
 122 }
 123
 124 void printInternal(PrintStream& out, ProofStatus status)
 125 {
 126     switch (status) {
 127     case IsProved:
 128         out.print("IsProved");
 129         return;
 130     case NeedsCheck:
 131         out.print("NeedsCheck");
 132         return;
 133     }
 134     RELEASE_ASSERT_NOT_REACHED();
 135 }
 136
 137 } // namespace WTF
 138
 139 #endif // ENABLE(DFG_JIT)
 140
 141 namespace WTF {
 142
 143 using namespace JSC::DFG;
 144
 145 void printInternal(PrintStream& out, CapabilityLevel capabilityLevel)
 146 {
 147     switch (capabilityLevel) {
 148     case CannotCompile:
 149         out.print("CannotCompile");
 150         return;
 151     case CanCompile:
 152         out.print("CanCompile");
 153         return;
 154     case CanCompileAndInline:
 155         out.print("CanCompileAndInline");
 156         return;
 157     case CapabilityLevelNotSet:
 158         out.print("CapabilityLevelNotSet");
 159         return;
 160     }
 161     RELEASE_ASSERT_NOT_REACHED();
 162 }
 163
 164 } // namespace WTF
 165