1 files changed, 0 insertions, 116 deletions
diff --git a/Source/JavaScriptCore/jit/JITDivGenerator.cpp b/Source/JavaScriptCore/jit/JITDivGenerator.cpp
deleted file mode 100644
index 6b2a7f286..000000000
--- a/Source/JavaScriptCore/jit/JITDivGenerator.cpp
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Copyright (C) 2015 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 "JITDivGenerator.h"
-
-#if ENABLE(JIT)
-
-#include "JSCJSValueInlines.h"
-
-namespace JSC {
-
-void JITDivGenerator::loadOperand(CCallHelpers& jit, SnippetOperand& opr, JSValueRegs oprRegs, FPRReg destFPR)
-{
-    if (opr.isConstInt32()) {
-        jit.move(CCallHelpers::Imm32(opr.asConstInt32()), m_scratchGPR);
-        jit.convertInt32ToDouble(m_scratchGPR, destFPR);
-#if USE(JSVALUE64)
-    } else if (opr.isConstDouble()) {
-        jit.move(CCallHelpers::Imm64(opr.asRawBits()), m_scratchGPR);
-        jit.move64ToDouble(m_scratchGPR, destFPR);
-#endif
-    } else {
-        if (!opr.definitelyIsNumber())
-            m_slowPathJumpList.append(jit.branchIfNotNumber(oprRegs, m_scratchGPR));
-        CCallHelpers::Jump notInt32 = jit.branchIfNotInt32(oprRegs);
-        jit.convertInt32ToDouble(oprRegs.payloadGPR(), destFPR);
-        CCallHelpers::Jump oprIsLoaded = jit.jump();
-        notInt32.link(&jit);
-        jit.unboxDoubleNonDestructive(oprRegs, destFPR, m_scratchGPR, m_scratchFPR);
-        oprIsLoaded.link(&jit);
-    }
-}
-
-void JITDivGenerator::generateFastPath(CCallHelpers& jit)
-{
-    ASSERT(m_scratchGPR != InvalidGPRReg);
-    ASSERT(m_scratchGPR != m_left.payloadGPR());
-    ASSERT(m_scratchGPR != m_right.payloadGPR());
-#if USE(JSVALUE32_64)
-    ASSERT(m_scratchGPR != m_left.tagGPR());
-    ASSERT(m_scratchGPR != m_right.tagGPR());
-    ASSERT(m_scratchFPR != InvalidFPRReg);
-#endif
-
-    ASSERT(!m_didEmitFastPath);
-    if (!jit.supportsFloatingPoint())
-        return;
-    if (!m_leftOperand.mightBeNumber() || !m_rightOperand.mightBeNumber())
-        return;
-
-    ASSERT(!m_leftOperand.isConstInt32() || !m_rightOperand.isConstInt32());
-    m_didEmitFastPath = true;
-    loadOperand(jit, m_leftOperand, m_left, m_leftFPR);
-    loadOperand(jit, m_rightOperand, m_right, m_rightFPR);
-
-    jit.divDouble(m_rightFPR, m_leftFPR);
-
-    // Is the result actually an integer? The DFG JIT would really like to know. If it's
-    // not an integer, we increment a count. If this together with the slow case counter
-    // are below threshold then the DFG JIT will compile this division with a speculation
-    // that the remainder is zero.
-
-    // As well, there are cases where a double result here would cause an important field
-    // in the heap to sometimes have doubles in it, resulting in double predictions getting
-    // propagated to a use site where it might cause damage (such as the index to an array
-    // access). So if we are DFG compiling anything in the program, we want this code to
-    // ensure that it produces integers whenever possible.
-    
-    CCallHelpers::JumpList notInt32;
-    jit.branchConvertDoubleToInt32(m_leftFPR, m_scratchGPR, notInt32, m_scratchFPR);
-
-    // If we've got an integer, we might as well make that the result of the division.
-    jit.boxInt32(m_scratchGPR, m_result);
-    m_endJumpList.append(jit.jump());
-
-    notInt32.link(&jit);
-#if USE(JSVALUE64)
-    jit.moveDoubleTo64(m_leftFPR, m_scratchGPR);
-    CCallHelpers::Jump notDoubleZero = jit.branchTest64(CCallHelpers::NonZero, m_scratchGPR);
-
-    jit.move(GPRInfo::tagTypeNumberRegister, m_result.payloadGPR());
-    m_endJumpList.append(jit.jump());
-
-    notDoubleZero.link(&jit);
-#endif
-    if (m_resultProfile)
-        jit.add32(CCallHelpers::TrustedImm32(1), CCallHelpers::AbsoluteAddress(m_resultProfile->addressOfSpecialFastPathCount()));
-    jit.boxDouble(m_leftFPR, m_result);
-}
-
-} // namespace JSC
-
-#endif // ENABLE(JIT)