JavaScriptCore-1097.3.tar.gz

[apple/javascriptcore.git] / dfg / DFGDriver.cpp

diff --git a/dfg/DFGDriver.cpp b/dfg/DFGDriver.cpp
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+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "DFGDriver.h"
+
+#if ENABLE(DFG_JIT)
+
+#include "DFGByteCodeParser.h"
+#include "DFGCFAPhase.h"
+#include "DFGCSEPhase.h"
+#include "DFGFixupPhase.h"
+#include "DFGJITCompiler.h"
+#include "DFGPredictionPropagationPhase.h"
+#include "DFGRedundantPhiEliminationPhase.h"
+#include "DFGVirtualRegisterAllocationPhase.h"
+
+namespace JSC { namespace DFG {
+
+enum CompileMode { CompileFunction, CompileOther };
+inline bool compile(CompileMode compileMode, JSGlobalData& globalData, CodeBlock* codeBlock, JITCode& jitCode, MacroAssemblerCodePtr* jitCodeWithArityCheck)
+{
+    SamplingRegion samplingRegion("DFG Compilation (Driver)");
+    
+    ASSERT(codeBlock);
+    ASSERT(codeBlock->alternative());
+    ASSERT(codeBlock->alternative()->getJITType() == JITCode::BaselineJIT);
+
+#if DFG_ENABLE(DEBUG_VERBOSE)
+    dataLog("DFG compiling code block %p(%p), number of instructions = %u.\n", codeBlock, codeBlock->alternative(), codeBlock->instructionCount());
+#endif
+    
+    Graph dfg(globalData, codeBlock);
+    if (!parse(dfg))
+        return false;
+    
+    if (compileMode == CompileFunction)
+        dfg.predictArgumentTypes();
+
+    performRedundantPhiElimination(dfg);
+    performPredictionPropagation(dfg);
+    performFixup(dfg);
+    performCSE(dfg);
+    performVirtualRegisterAllocation(dfg);
+    performCFA(dfg);
+
+#if DFG_ENABLE(DEBUG_VERBOSE)
+    dataLog("Graph after optimization:\n");
+    dfg.dump();
+#endif
+    
+    JITCompiler dataFlowJIT(dfg);
+    bool result;
+    if (compileMode == CompileFunction) {
+        ASSERT(jitCodeWithArityCheck);
+        
+        result = dataFlowJIT.compileFunction(jitCode, *jitCodeWithArityCheck);
+    } else {
+        ASSERT(compileMode == CompileOther);
+        ASSERT(!jitCodeWithArityCheck);
+        
+        result = dataFlowJIT.compile(jitCode);
+    }
+    
+    return result;
+}
+
+bool tryCompile(JSGlobalData& globalData, CodeBlock* codeBlock, JITCode& jitCode)
+{
+    return compile(CompileOther, globalData, codeBlock, jitCode, 0);
+}
+
+bool tryCompileFunction(JSGlobalData& globalData, CodeBlock* codeBlock, JITCode& jitCode, MacroAssemblerCodePtr& jitCodeWithArityCheck)
+{
+    return compile(CompileFunction, globalData, codeBlock, jitCode, &jitCodeWithArityCheck);
+}
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+