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Diffstat (limited to 'JavaScriptCore/jit/JITArithmetic.cpp')
| -rw-r--r-- | JavaScriptCore/jit/JITArithmetic.cpp | 1244 |
1 files changed, 0 insertions, 1244 deletions
diff --git a/JavaScriptCore/jit/JITArithmetic.cpp b/JavaScriptCore/jit/JITArithmetic.cpp deleted file mode 100644 index cd05f51..0000000 --- a/JavaScriptCore/jit/JITArithmetic.cpp +++ /dev/null @@ -1,1244 +0,0 @@ -/* - * Copyright (C) 2008 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" - -#if ENABLE(JIT) -#if USE(JSVALUE64) -#include "JIT.h" - -#include "CodeBlock.h" -#include "JITInlineMethods.h" -#include "JITStubCall.h" -#include "JITStubs.h" -#include "JSArray.h" -#include "JSFunction.h" -#include "Interpreter.h" -#include "ResultType.h" -#include "SamplingTool.h" - -#ifndef NDEBUG -#include <stdio.h> -#endif - -using namespace std; - -namespace JSC { - -void JIT::emit_op_lshift(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - emitGetVirtualRegisters(op1, regT0, op2, regT2); - // FIXME: would we be better using 'emitJumpSlowCaseIfNotImmediateIntegers'? - we *probably* ought to be consistent. - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT2); - emitFastArithImmToInt(regT0); - emitFastArithImmToInt(regT2); - lshift32(regT2, regT0); - emitFastArithReTagImmediate(regT0, regT0); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_lshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - UNUSED_PARAM(op1); - UNUSED_PARAM(op2); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_lshift); - stubCall.addArgument(regT0); - stubCall.addArgument(regT2); - stubCall.call(result); -} - -void JIT::emit_op_rshift(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - if (isOperandConstantImmediateInt(op2)) { - // isOperandConstantImmediateInt(op2) => 1 SlowCase - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - // Mask with 0x1f as per ecma-262 11.7.2 step 7. - rshift32(Imm32(getConstantOperandImmediateInt(op2) & 0x1f), regT0); - } else { - emitGetVirtualRegisters(op1, regT0, op2, regT2); - if (supportsFloatingPointTruncate()) { - Jump lhsIsInt = emitJumpIfImmediateInteger(regT0); - // supportsFloatingPoint() && USE(JSVALUE64) => 3 SlowCases - addSlowCase(emitJumpIfNotImmediateNumber(regT0)); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - addSlowCase(branchTruncateDoubleToInt32(fpRegT0, regT0)); - lhsIsInt.link(this); - emitJumpSlowCaseIfNotImmediateInteger(regT2); - } else { - // !supportsFloatingPoint() => 2 SlowCases - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT2); - } - emitFastArithImmToInt(regT2); - rshift32(regT2, regT0); - } - emitFastArithIntToImmNoCheck(regT0, regT0); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_rshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - JITStubCall stubCall(this, cti_op_rshift); - - if (isOperandConstantImmediateInt(op2)) { - linkSlowCase(iter); - stubCall.addArgument(regT0); - stubCall.addArgument(op2, regT2); - } else { - if (supportsFloatingPointTruncate()) { - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - // We're reloading op1 to regT0 as we can no longer guarantee that - // we have not munged the operand. It may have already been shifted - // correctly, but it still will not have been tagged. - stubCall.addArgument(op1, regT0); - stubCall.addArgument(regT2); - } else { - linkSlowCase(iter); - linkSlowCase(iter); - stubCall.addArgument(regT0); - stubCall.addArgument(regT2); - } - } - - stubCall.call(result); -} - -void JIT::emit_op_urshift(Instruction* currentInstruction) -{ - unsigned dst = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - // Slow case of urshift makes assumptions about what registers hold the - // shift arguments, so any changes must be updated there as well. - if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitFastArithImmToInt(regT0); - int shift = getConstantOperand(op2).asInt32(); - if (shift) - urshift32(Imm32(shift & 0x1f), regT0); - // unsigned shift < 0 or shift = k*2^32 may result in (essentially) - // a toUint conversion, which can result in a value we can represent - // as an immediate int. - if (shift < 0 || !(shift & 31)) - addSlowCase(branch32(LessThan, regT0, Imm32(0))); - emitFastArithReTagImmediate(regT0, regT0); - emitPutVirtualRegister(dst, regT0); - return; - } - emitGetVirtualRegisters(op1, regT0, op2, regT1); - if (!isOperandConstantImmediateInt(op1)) - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - emitFastArithImmToInt(regT0); - emitFastArithImmToInt(regT1); - urshift32(regT1, regT0); - addSlowCase(branch32(LessThan, regT0, Imm32(0))); - emitFastArithReTagImmediate(regT0, regT0); - emitPutVirtualRegister(dst, regT0); -} - -void JIT::emitSlow_op_urshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned dst = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - if (isOperandConstantImmediateInt(op2)) { - int shift = getConstantOperand(op2).asInt32(); - // op1 = regT0 - linkSlowCase(iter); // int32 check - if (supportsFloatingPointTruncate()) { - JumpList failures; - failures.append(emitJumpIfNotImmediateNumber(regT0)); // op1 is not a double - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0)); - if (shift) - urshift32(Imm32(shift & 0x1f), regT0); - if (shift < 0 || !(shift & 31)) - failures.append(branch32(LessThan, regT0, Imm32(0))); - emitFastArithReTagImmediate(regT0, regT0); - emitPutVirtualRegister(dst, regT0); - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift)); - failures.link(this); - } - if (shift < 0 || !(shift & 31)) - linkSlowCase(iter); // failed to box in hot path - } else { - // op1 = regT0 - // op2 = regT1 - if (!isOperandConstantImmediateInt(op1)) { - linkSlowCase(iter); // int32 check -- op1 is not an int - if (supportsFloatingPointTruncate()) { - JumpList failures; - failures.append(emitJumpIfNotImmediateNumber(regT0)); // op1 is not a double - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0)); - failures.append(emitJumpIfNotImmediateInteger(regT1)); // op2 is not an int - emitFastArithImmToInt(regT1); - urshift32(regT1, regT0); - failures.append(branch32(LessThan, regT0, Imm32(0))); - emitFastArithReTagImmediate(regT0, regT0); - emitPutVirtualRegister(dst, regT0); - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift)); - failures.link(this); - } - } - - linkSlowCase(iter); // int32 check - op2 is not an int - linkSlowCase(iter); // Can't represent unsigned result as an immediate - } - - JITStubCall stubCall(this, cti_op_urshift); - stubCall.addArgument(op1, regT0); - stubCall.addArgument(op2, regT1); - stubCall.call(dst); -} - -void JIT::emit_op_jnless(Instruction* currentInstruction) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the fast path: - // - int immediate to constant int immediate - // - constant int immediate to int immediate - // - int immediate to int immediate - - if (isOperandConstantImmediateChar(op1)) { - emitGetVirtualRegister(op2, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(LessThanOrEqual, regT0, Imm32(asString(getConstantOperand(op1))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateChar(op2)) { - emitGetVirtualRegister(op1, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(GreaterThanOrEqual, regT0, Imm32(asString(getConstantOperand(op2))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - int32_t op2imm = getConstantOperandImmediateInt(op2); - addJump(branch32(GreaterThanOrEqual, regT0, Imm32(op2imm)), target); - } else if (isOperandConstantImmediateInt(op1)) { - emitGetVirtualRegister(op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - int32_t op1imm = getConstantOperandImmediateInt(op1); - addJump(branch32(LessThanOrEqual, regT1, Imm32(op1imm)), target); - } else { - emitGetVirtualRegisters(op1, regT0, op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - - addJump(branch32(GreaterThanOrEqual, regT0, regT1), target); - } -} - -void JIT::emitSlow_op_jnless(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the slow path: - // - floating-point number to constant int immediate - // - constant int immediate to floating-point number - // - floating-point number to floating-point number. - if (isOperandConstantImmediateChar(op1) || isOperandConstantImmediateChar(op2)) { - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(op1, regT0); - stubCall.addArgument(op2, regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(Zero, regT0), target); - return; - } - - if (isOperandConstantImmediateInt(op2)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - - int32_t op2imm = getConstantOperand(op2).asInt32();; - - move(Imm32(op2imm), regT1); - convertInt32ToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(DoubleLessThanOrEqualOrUnordered, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(regT0); - stubCall.addArgument(op2, regT2); - stubCall.call(); - emitJumpSlowToHot(branchTest32(Zero, regT0), target); - - } else if (isOperandConstantImmediateInt(op1)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT1); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT1); - - int32_t op1imm = getConstantOperand(op1).asInt32();; - - move(Imm32(op1imm), regT0); - convertInt32ToDouble(regT0, fpRegT0); - - emitJumpSlowToHot(branchDouble(DoubleLessThanOrEqualOrUnordered, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(Zero, regT0), target); - - } else { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - Jump fail2 = emitJumpIfNotImmediateNumber(regT1); - Jump fail3 = emitJumpIfImmediateInteger(regT1); - addPtr(tagTypeNumberRegister, regT0); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT0, fpRegT0); - movePtrToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(DoubleLessThanOrEqualOrUnordered, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - fail2.link(this); - fail3.link(this); - } - - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(regT0); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(Zero, regT0), target); - } -} - -void JIT::emit_op_jless(Instruction* currentInstruction) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the fast path: - // - int immediate to constant int immediate - // - constant int immediate to int immediate - // - int immediate to int immediate - - if (isOperandConstantImmediateChar(op1)) { - emitGetVirtualRegister(op2, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(GreaterThan, regT0, Imm32(asString(getConstantOperand(op1))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateChar(op2)) { - emitGetVirtualRegister(op1, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(LessThan, regT0, Imm32(asString(getConstantOperand(op2))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - int32_t op2imm = getConstantOperandImmediateInt(op2); - addJump(branch32(LessThan, regT0, Imm32(op2imm)), target); - } else if (isOperandConstantImmediateInt(op1)) { - emitGetVirtualRegister(op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - int32_t op1imm = getConstantOperandImmediateInt(op1); - addJump(branch32(GreaterThan, regT1, Imm32(op1imm)), target); - } else { - emitGetVirtualRegisters(op1, regT0, op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - - addJump(branch32(LessThan, regT0, regT1), target); - } -} - -void JIT::emitSlow_op_jless(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the slow path: - // - floating-point number to constant int immediate - // - constant int immediate to floating-point number - // - floating-point number to floating-point number. - if (isOperandConstantImmediateChar(op1) || isOperandConstantImmediateChar(op2)) { - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(op1, regT0); - stubCall.addArgument(op2, regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(NonZero, regT0), target); - return; - } - - if (isOperandConstantImmediateInt(op2)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - - int32_t op2imm = getConstantOperand(op2).asInt32(); - - move(Imm32(op2imm), regT1); - convertInt32ToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(DoubleLessThan, fpRegT0, fpRegT1), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(regT0); - stubCall.addArgument(op2, regT2); - stubCall.call(); - emitJumpSlowToHot(branchTest32(NonZero, regT0), target); - - } else if (isOperandConstantImmediateInt(op1)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT1); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT1); - - int32_t op1imm = getConstantOperand(op1).asInt32(); - - move(Imm32(op1imm), regT0); - convertInt32ToDouble(regT0, fpRegT0); - - emitJumpSlowToHot(branchDouble(DoubleLessThan, fpRegT0, fpRegT1), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(NonZero, regT0), target); - - } else { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - Jump fail2 = emitJumpIfNotImmediateNumber(regT1); - Jump fail3 = emitJumpIfImmediateInteger(regT1); - addPtr(tagTypeNumberRegister, regT0); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT0, fpRegT0); - movePtrToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(DoubleLessThan, fpRegT0, fpRegT1), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnless)); - - fail1.link(this); - fail2.link(this); - fail3.link(this); - } - - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jless); - stubCall.addArgument(regT0); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(NonZero, regT0), target); - } -} - -void JIT::emit_op_jlesseq(Instruction* currentInstruction, bool invert) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the fast path: - // - int immediate to constant int immediate - // - constant int immediate to int immediate - // - int immediate to int immediate - - if (isOperandConstantImmediateChar(op1)) { - emitGetVirtualRegister(op2, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(invert ? LessThan : GreaterThanOrEqual, regT0, Imm32(asString(getConstantOperand(op1))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateChar(op2)) { - emitGetVirtualRegister(op1, regT0); - addSlowCase(emitJumpIfNotJSCell(regT0)); - JumpList failures; - emitLoadCharacterString(regT0, regT0, failures); - addSlowCase(failures); - addJump(branch32(invert ? GreaterThan : LessThanOrEqual, regT0, Imm32(asString(getConstantOperand(op2))->tryGetValue()[0])), target); - return; - } - if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - int32_t op2imm = getConstantOperandImmediateInt(op2); - addJump(branch32(invert ? GreaterThan : LessThanOrEqual, regT0, Imm32(op2imm)), target); - } else if (isOperandConstantImmediateInt(op1)) { - emitGetVirtualRegister(op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - int32_t op1imm = getConstantOperandImmediateInt(op1); - addJump(branch32(invert ? LessThan : GreaterThanOrEqual, regT1, Imm32(op1imm)), target); - } else { - emitGetVirtualRegisters(op1, regT0, op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - - addJump(branch32(invert ? GreaterThan : LessThanOrEqual, regT0, regT1), target); - } -} - -void JIT::emitSlow_op_jlesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter, bool invert) -{ - unsigned op1 = currentInstruction[1].u.operand; - unsigned op2 = currentInstruction[2].u.operand; - unsigned target = currentInstruction[3].u.operand; - - // We generate inline code for the following cases in the slow path: - // - floating-point number to constant int immediate - // - constant int immediate to floating-point number - // - floating-point number to floating-point number. - - if (isOperandConstantImmediateChar(op1) || isOperandConstantImmediateChar(op2)) { - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jlesseq); - stubCall.addArgument(op1, regT0); - stubCall.addArgument(op2, regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(invert ? Zero : NonZero, regT0), target); - return; - } - - if (isOperandConstantImmediateInt(op2)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - - int32_t op2imm = getConstantOperand(op2).asInt32();; - - move(Imm32(op2imm), regT1); - convertInt32ToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(invert ? DoubleLessThanOrUnordered : DoubleGreaterThanOrEqual, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnlesseq)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jlesseq); - stubCall.addArgument(regT0); - stubCall.addArgument(op2, regT2); - stubCall.call(); - emitJumpSlowToHot(branchTest32(invert ? Zero : NonZero, regT0), target); - - } else if (isOperandConstantImmediateInt(op1)) { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT1); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT1); - - int32_t op1imm = getConstantOperand(op1).asInt32();; - - move(Imm32(op1imm), regT0); - convertInt32ToDouble(regT0, fpRegT0); - - emitJumpSlowToHot(branchDouble(invert ? DoubleLessThanOrUnordered : DoubleGreaterThanOrEqual, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnlesseq)); - - fail1.link(this); - } - - JITStubCall stubCall(this, cti_op_jlesseq); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(invert ? Zero : NonZero, regT0), target); - - } else { - linkSlowCase(iter); - - if (supportsFloatingPoint()) { - Jump fail1 = emitJumpIfNotImmediateNumber(regT0); - Jump fail2 = emitJumpIfNotImmediateNumber(regT1); - Jump fail3 = emitJumpIfImmediateInteger(regT1); - addPtr(tagTypeNumberRegister, regT0); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT0, fpRegT0); - movePtrToDouble(regT1, fpRegT1); - - emitJumpSlowToHot(branchDouble(invert ? DoubleLessThanOrUnordered : DoubleGreaterThanOrEqual, fpRegT1, fpRegT0), target); - - emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_jnlesseq)); - - fail1.link(this); - fail2.link(this); - fail3.link(this); - } - - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_jlesseq); - stubCall.addArgument(regT0); - stubCall.addArgument(regT1); - stubCall.call(); - emitJumpSlowToHot(branchTest32(invert ? Zero : NonZero, regT0), target); - } -} - -void JIT::emit_op_jnlesseq(Instruction* currentInstruction) -{ - emit_op_jlesseq(currentInstruction, true); -} - -void JIT::emitSlow_op_jnlesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - emitSlow_op_jlesseq(currentInstruction, iter, true); -} - -void JIT::emit_op_bitand(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - if (isOperandConstantImmediateInt(op1)) { - emitGetVirtualRegister(op2, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - int32_t imm = getConstantOperandImmediateInt(op1); - andPtr(Imm32(imm), regT0); - if (imm >= 0) - emitFastArithIntToImmNoCheck(regT0, regT0); - } else if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - int32_t imm = getConstantOperandImmediateInt(op2); - andPtr(Imm32(imm), regT0); - if (imm >= 0) - emitFastArithIntToImmNoCheck(regT0, regT0); - } else { - emitGetVirtualRegisters(op1, regT0, op2, regT1); - andPtr(regT1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - } - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_bitand(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - linkSlowCase(iter); - if (isOperandConstantImmediateInt(op1)) { - JITStubCall stubCall(this, cti_op_bitand); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(regT0); - stubCall.call(result); - } else if (isOperandConstantImmediateInt(op2)) { - JITStubCall stubCall(this, cti_op_bitand); - stubCall.addArgument(regT0); - stubCall.addArgument(op2, regT2); - stubCall.call(result); - } else { - JITStubCall stubCall(this, cti_op_bitand); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(regT1); - stubCall.call(result); - } -} - -void JIT::emit_op_post_inc(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned srcDst = currentInstruction[2].u.operand; - - emitGetVirtualRegister(srcDst, regT0); - move(regT0, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchAdd32(Overflow, Imm32(1), regT1)); - emitFastArithIntToImmNoCheck(regT1, regT1); - emitPutVirtualRegister(srcDst, regT1); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_post_inc(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned srcDst = currentInstruction[2].u.operand; - - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_post_inc); - stubCall.addArgument(regT0); - stubCall.addArgument(Imm32(srcDst)); - stubCall.call(result); -} - -void JIT::emit_op_post_dec(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned srcDst = currentInstruction[2].u.operand; - - emitGetVirtualRegister(srcDst, regT0); - move(regT0, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchSub32(Zero, Imm32(1), regT1)); - emitFastArithIntToImmNoCheck(regT1, regT1); - emitPutVirtualRegister(srcDst, regT1); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_post_dec(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned srcDst = currentInstruction[2].u.operand; - - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_post_dec); - stubCall.addArgument(regT0); - stubCall.addArgument(Imm32(srcDst)); - stubCall.call(result); -} - -void JIT::emit_op_pre_inc(Instruction* currentInstruction) -{ - unsigned srcDst = currentInstruction[1].u.operand; - - emitGetVirtualRegister(srcDst, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchAdd32(Overflow, Imm32(1), regT0)); - emitFastArithIntToImmNoCheck(regT0, regT0); - emitPutVirtualRegister(srcDst); -} - -void JIT::emitSlow_op_pre_inc(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned srcDst = currentInstruction[1].u.operand; - - Jump notImm = getSlowCase(iter); - linkSlowCase(iter); - emitGetVirtualRegister(srcDst, regT0); - notImm.link(this); - JITStubCall stubCall(this, cti_op_pre_inc); - stubCall.addArgument(regT0); - stubCall.call(srcDst); -} - -void JIT::emit_op_pre_dec(Instruction* currentInstruction) -{ - unsigned srcDst = currentInstruction[1].u.operand; - - emitGetVirtualRegister(srcDst, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchSub32(Zero, Imm32(1), regT0)); - emitFastArithIntToImmNoCheck(regT0, regT0); - emitPutVirtualRegister(srcDst); -} - -void JIT::emitSlow_op_pre_dec(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned srcDst = currentInstruction[1].u.operand; - - Jump notImm = getSlowCase(iter); - linkSlowCase(iter); - emitGetVirtualRegister(srcDst, regT0); - notImm.link(this); - JITStubCall stubCall(this, cti_op_pre_dec); - stubCall.addArgument(regT0); - stubCall.call(srcDst); -} - -/* ------------------------------ BEGIN: OP_MOD ------------------------------ */ - -#if CPU(X86) || CPU(X86_64) || CPU(MIPS) - -void JIT::emit_op_mod(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - -#if CPU(X86) || CPU(X86_64) - // Make sure registers are correct for x86 IDIV instructions. - ASSERT(regT0 == X86Registers::eax); - ASSERT(regT1 == X86Registers::edx); - ASSERT(regT2 == X86Registers::ecx); -#endif - - emitGetVirtualRegisters(op1, regT0, op2, regT2); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT2); - - addSlowCase(branchPtr(Equal, regT2, ImmPtr(JSValue::encode(jsNumber(0))))); - m_assembler.cdq(); - m_assembler.idivl_r(regT2); - emitFastArithReTagImmediate(regT1, regT0); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_mod(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_mod); - stubCall.addArgument(regT0); - stubCall.addArgument(regT2); - stubCall.call(result); -} - -#else // CPU(X86) || CPU(X86_64) || CPU(MIPS) - -void JIT::emit_op_mod(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - - JITStubCall stubCall(this, cti_op_mod); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(op2, regT2); - stubCall.call(result); -} - -void JIT::emitSlow_op_mod(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ -#if ENABLE(JIT_USE_SOFT_MODULO) - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - linkSlowCase(iter); - linkSlowCase(iter); - linkSlowCase(iter); - JITStubCall stubCall(this, cti_op_mod); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(op2, regT2); - stubCall.call(result); -#else - ASSERT_NOT_REACHED(); -#endif -} - -#endif // CPU(X86) || CPU(X86_64) - -/* ------------------------------ END: OP_MOD ------------------------------ */ - -/* ------------------------------ BEGIN: USE(JSVALUE64) (OP_ADD, OP_SUB, OP_MUL) ------------------------------ */ - -void JIT::compileBinaryArithOp(OpcodeID opcodeID, unsigned, unsigned op1, unsigned op2, OperandTypes) -{ - emitGetVirtualRegisters(op1, regT0, op2, regT1); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT1); - if (opcodeID == op_add) - addSlowCase(branchAdd32(Overflow, regT1, regT0)); - else if (opcodeID == op_sub) - addSlowCase(branchSub32(Overflow, regT1, regT0)); - else { - ASSERT(opcodeID == op_mul); - addSlowCase(branchMul32(Overflow, regT1, regT0)); - addSlowCase(branchTest32(Zero, regT0)); - } - emitFastArithIntToImmNoCheck(regT0, regT0); -} - -void JIT::compileBinaryArithOpSlowCase(OpcodeID opcodeID, Vector<SlowCaseEntry>::iterator& iter, unsigned result, unsigned op1, unsigned op2, OperandTypes types, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase) -{ - // We assume that subtracting TagTypeNumber is equivalent to adding DoubleEncodeOffset. - COMPILE_ASSERT(((JSImmediate::TagTypeNumber + JSImmediate::DoubleEncodeOffset) == 0), TagTypeNumber_PLUS_DoubleEncodeOffset_EQUALS_0); - - Jump notImm1; - Jump notImm2; - if (op1HasImmediateIntFastCase) { - notImm2 = getSlowCase(iter); - } else if (op2HasImmediateIntFastCase) { - notImm1 = getSlowCase(iter); - } else { - notImm1 = getSlowCase(iter); - notImm2 = getSlowCase(iter); - } - - linkSlowCase(iter); // Integer overflow case - we could handle this in JIT code, but this is likely rare. - if (opcodeID == op_mul && !op1HasImmediateIntFastCase && !op2HasImmediateIntFastCase) // op_mul has an extra slow case to handle 0 * negative number. - linkSlowCase(iter); - emitGetVirtualRegister(op1, regT0); - - Label stubFunctionCall(this); - JITStubCall stubCall(this, opcodeID == op_add ? cti_op_add : opcodeID == op_sub ? cti_op_sub : cti_op_mul); - if (op1HasImmediateIntFastCase || op2HasImmediateIntFastCase) { - emitGetVirtualRegister(op1, regT0); - emitGetVirtualRegister(op2, regT1); - } - stubCall.addArgument(regT0); - stubCall.addArgument(regT1); - stubCall.call(result); - Jump end = jump(); - - if (op1HasImmediateIntFastCase) { - notImm2.link(this); - if (!types.second().definitelyIsNumber()) - emitJumpIfNotImmediateNumber(regT0).linkTo(stubFunctionCall, this); - emitGetVirtualRegister(op1, regT1); - convertInt32ToDouble(regT1, fpRegT1); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT2); - } else if (op2HasImmediateIntFastCase) { - notImm1.link(this); - if (!types.first().definitelyIsNumber()) - emitJumpIfNotImmediateNumber(regT0).linkTo(stubFunctionCall, this); - emitGetVirtualRegister(op2, regT1); - convertInt32ToDouble(regT1, fpRegT1); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT2); - } else { - // if we get here, eax is not an int32, edx not yet checked. - notImm1.link(this); - if (!types.first().definitelyIsNumber()) - emitJumpIfNotImmediateNumber(regT0).linkTo(stubFunctionCall, this); - if (!types.second().definitelyIsNumber()) - emitJumpIfNotImmediateNumber(regT1).linkTo(stubFunctionCall, this); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT1); - Jump op2isDouble = emitJumpIfNotImmediateInteger(regT1); - convertInt32ToDouble(regT1, fpRegT2); - Jump op2wasInteger = jump(); - - // if we get here, eax IS an int32, edx is not. - notImm2.link(this); - if (!types.second().definitelyIsNumber()) - emitJumpIfNotImmediateNumber(regT1).linkTo(stubFunctionCall, this); - convertInt32ToDouble(regT0, fpRegT1); - op2isDouble.link(this); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT2); - op2wasInteger.link(this); - } - - if (opcodeID == op_add) - addDouble(fpRegT2, fpRegT1); - else if (opcodeID == op_sub) - subDouble(fpRegT2, fpRegT1); - else if (opcodeID == op_mul) - mulDouble(fpRegT2, fpRegT1); - else { - ASSERT(opcodeID == op_div); - divDouble(fpRegT2, fpRegT1); - } - moveDoubleToPtr(fpRegT1, regT0); - subPtr(tagTypeNumberRegister, regT0); - emitPutVirtualRegister(result, regT0); - - end.link(this); -} - -void JIT::emit_op_add(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - if (!types.first().mightBeNumber() || !types.second().mightBeNumber()) { - JITStubCall stubCall(this, cti_op_add); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(op2, regT2); - stubCall.call(result); - return; - } - - if (isOperandConstantImmediateInt(op1)) { - emitGetVirtualRegister(op2, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchAdd32(Overflow, Imm32(getConstantOperandImmediateInt(op1)), regT0)); - emitFastArithIntToImmNoCheck(regT0, regT0); - } else if (isOperandConstantImmediateInt(op2)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchAdd32(Overflow, Imm32(getConstantOperandImmediateInt(op2)), regT0)); - emitFastArithIntToImmNoCheck(regT0, regT0); - } else - compileBinaryArithOp(op_add, result, op1, op2, types); - - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_add(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - if (!types.first().mightBeNumber() || !types.second().mightBeNumber()) - return; - - bool op1HasImmediateIntFastCase = isOperandConstantImmediateInt(op1); - bool op2HasImmediateIntFastCase = !op1HasImmediateIntFastCase && isOperandConstantImmediateInt(op2); - compileBinaryArithOpSlowCase(op_add, iter, result, op1, op2, OperandTypes::fromInt(currentInstruction[4].u.operand), op1HasImmediateIntFastCase, op2HasImmediateIntFastCase); -} - -void JIT::emit_op_mul(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - // For now, only plant a fast int case if the constant operand is greater than zero. - int32_t value; - if (isOperandConstantImmediateInt(op1) && ((value = getConstantOperandImmediateInt(op1)) > 0)) { - emitGetVirtualRegister(op2, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchMul32(Overflow, Imm32(value), regT0, regT0)); - emitFastArithReTagImmediate(regT0, regT0); - } else if (isOperandConstantImmediateInt(op2) && ((value = getConstantOperandImmediateInt(op2)) > 0)) { - emitGetVirtualRegister(op1, regT0); - emitJumpSlowCaseIfNotImmediateInteger(regT0); - addSlowCase(branchMul32(Overflow, Imm32(value), regT0, regT0)); - emitFastArithReTagImmediate(regT0, regT0); - } else - compileBinaryArithOp(op_mul, result, op1, op2, types); - - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_mul(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - bool op1HasImmediateIntFastCase = isOperandConstantImmediateInt(op1) && getConstantOperandImmediateInt(op1) > 0; - bool op2HasImmediateIntFastCase = !op1HasImmediateIntFastCase && isOperandConstantImmediateInt(op2) && getConstantOperandImmediateInt(op2) > 0; - compileBinaryArithOpSlowCase(op_mul, iter, result, op1, op2, OperandTypes::fromInt(currentInstruction[4].u.operand), op1HasImmediateIntFastCase, op2HasImmediateIntFastCase); -} - -void JIT::emit_op_div(Instruction* currentInstruction) -{ - unsigned dst = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - if (isOperandConstantImmediateDouble(op1)) { - emitGetVirtualRegister(op1, regT0); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - } else if (isOperandConstantImmediateInt(op1)) { - emitLoadInt32ToDouble(op1, fpRegT0); - } else { - emitGetVirtualRegister(op1, regT0); - if (!types.first().definitelyIsNumber()) - emitJumpSlowCaseIfNotImmediateNumber(regT0); - Jump notInt = emitJumpIfNotImmediateInteger(regT0); - convertInt32ToDouble(regT0, fpRegT0); - Jump skipDoubleLoad = jump(); - notInt.link(this); - addPtr(tagTypeNumberRegister, regT0); - movePtrToDouble(regT0, fpRegT0); - skipDoubleLoad.link(this); - } - - if (isOperandConstantImmediateDouble(op2)) { - emitGetVirtualRegister(op2, regT1); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT1); - } else if (isOperandConstantImmediateInt(op2)) { - emitLoadInt32ToDouble(op2, fpRegT1); - } else { - emitGetVirtualRegister(op2, regT1); - if (!types.second().definitelyIsNumber()) - emitJumpSlowCaseIfNotImmediateNumber(regT1); - Jump notInt = emitJumpIfNotImmediateInteger(regT1); - convertInt32ToDouble(regT1, fpRegT1); - Jump skipDoubleLoad = jump(); - notInt.link(this); - addPtr(tagTypeNumberRegister, regT1); - movePtrToDouble(regT1, fpRegT1); - skipDoubleLoad.link(this); - } - divDouble(fpRegT1, fpRegT0); - - // Double result. - moveDoubleToPtr(fpRegT0, regT0); - subPtr(tagTypeNumberRegister, regT0); - - emitPutVirtualRegister(dst, regT0); -} - -void JIT::emitSlow_op_div(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - if (types.first().definitelyIsNumber() && types.second().definitelyIsNumber()) { -#ifndef NDEBUG - breakpoint(); -#endif - return; - } - if (!isOperandConstantImmediateDouble(op1) && !isOperandConstantImmediateInt(op1)) { - if (!types.first().definitelyIsNumber()) - linkSlowCase(iter); - } - if (!isOperandConstantImmediateDouble(op2) && !isOperandConstantImmediateInt(op2)) { - if (!types.second().definitelyIsNumber()) - linkSlowCase(iter); - } - // There is an extra slow case for (op1 * -N) or (-N * op2), to check for 0 since this should produce a result of -0. - JITStubCall stubCall(this, cti_op_div); - stubCall.addArgument(op1, regT2); - stubCall.addArgument(op2, regT2); - stubCall.call(result); -} - -void JIT::emit_op_sub(Instruction* currentInstruction) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - compileBinaryArithOp(op_sub, result, op1, op2, types); - emitPutVirtualRegister(result); -} - -void JIT::emitSlow_op_sub(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) -{ - unsigned result = currentInstruction[1].u.operand; - unsigned op1 = currentInstruction[2].u.operand; - unsigned op2 = currentInstruction[3].u.operand; - OperandTypes types = OperandTypes::fromInt(currentInstruction[4].u.operand); - - compileBinaryArithOpSlowCase(op_sub, iter, result, op1, op2, types, false, false); -} - -/* ------------------------------ END: OP_ADD, OP_SUB, OP_MUL ------------------------------ */ - -} // namespace JSC - -#endif // USE(JSVALUE64) -#endif // ENABLE(JIT) |