1 files changed, 103 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/b3/air/AirLogRegisterPressure.cpp b/Source/JavaScriptCore/b3/air/AirLogRegisterPressure.cpp
new file mode 100644
index 000000000..dbbb257c1
--- /dev/null
+++ b/Source/JavaScriptCore/b3/air/AirLogRegisterPressure.cpp
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2016 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 "AirLogRegisterPressure.h"
+
+#if ENABLE(B3_JIT)
+
+#include "AirArgInlines.h"
+#include "AirCode.h"
+#include "AirInstInlines.h"
+#include "AirLiveness.h"
+
+namespace JSC { namespace B3 { namespace Air {
+
+void logRegisterPressure(Code& code)
+{
+    const unsigned totalColumns = 200;
+    const unsigned registerColumns = 100;
+    
+    RegLiveness liveness(code);
+
+    for (BasicBlock* block : code) {
+        RegLiveness::LocalCalc localCalc(liveness, block);
+
+        block->dumpHeader(WTF::dataFile());
+
+        Vector<CString> instDumps;
+        for (unsigned instIndex = block->size(); instIndex--;) {
+            Inst& inst = block->at(instIndex);
+            Inst* prevInst = block->get(instIndex - 1);
+
+            localCalc.execute(instIndex);
+
+            RegisterSet set;
+            set.setAll(localCalc.live());
+            Inst::forEachDefWithExtraClobberedRegs<Reg>(
+                prevInst, &inst,
+                [&] (Reg reg, Arg::Role, Arg::Type, Arg::Width) {
+                    set.set(reg);
+                });
+
+            StringPrintStream instOut;
+            StringPrintStream lineOut;
+            lineOut.print("   ");
+            if (set.numberOfSetRegisters()) {
+                set.forEach(
+                    [&] (Reg reg) {
+                        CString text = toCString(" ", reg);
+                        if (text.length() + lineOut.length() > totalColumns) {
+                            instOut.print(lineOut.toCString(), "\n");
+                            lineOut.reset();
+                            lineOut.print("       ");
+                        }
+                        lineOut.print(text);
+                    });
+                lineOut.print(":");
+            }
+            if (lineOut.length() > registerColumns) {
+                instOut.print(lineOut.toCString(), "\n");
+                lineOut.reset();
+            }
+            while (lineOut.length() < registerColumns)
+                lineOut.print(" ");
+            lineOut.print(" ");
+            lineOut.print(inst);
+            instOut.print(lineOut.toCString(), "\n");
+            instDumps.append(instOut.toCString());
+        }
+
+        for (unsigned i = instDumps.size(); i--;)
+            dataLog(instDumps[i]);
+        
+        block->dumpFooter(WTF::dataFile());
+    }
+}
+
+} } } // namespace JSC::B3::Air
+
+#endif // ENABLE(B3_JIT)
+