Remove the special MathFloor / MathAbs call handlers.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 25a833eebfd71ec05e49241b8cc29a55419816f2..2cd083be7dafbe50318e8020e8288d8d946c7f2c 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -2035,203 +2035,6 @@ Handle<Code> CallStubCompiler::CompileStringFromCharCodeCall(
 }
 
 
-Handle<Code> CallStubCompiler::CompileMathFloorCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  if (!CpuFeatures::IsSupported(SSE2)) {
-    return Handle<Code>::null();
-  }
-
-  CpuFeatureScope use_sse2(masm(), SSE2);
-
-  const int argc = arguments().immediate();
-
-  // If the object is not a JSObject or we got an unexpected number of
-  // arguments, bail out to the regular call.
-  if (!object->IsJSObject() || argc != 1) {
-    return Handle<Code>::null();
-  }
-
-  Label miss;
-
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-  if (!cell.is_null()) {
-    ASSERT(cell->value() == *function);
-    GenerateLoadFunctionFromCell(cell, function, &miss);
-  }
-
-  // Load the (only) argument into eax.
-  __ mov(eax, Operand(esp, 1 * kPointerSize));
-
-  // Check if the argument is a smi.
-  Label smi;
-  STATIC_ASSERT(kSmiTag == 0);
-  __ JumpIfSmi(eax, &smi);
-
-  // Check if the argument is a heap number and load its value into xmm0.
-  Label slow;
-  __ CheckMap(eax, factory()->heap_number_map(), &slow, DONT_DO_SMI_CHECK);
-  __ movsd(xmm0, FieldOperand(eax, HeapNumber::kValueOffset));
-
-  // Check if the argument is strictly positive. Note this also
-  // discards NaN.
-  __ xorpd(xmm1, xmm1);
-  __ ucomisd(xmm0, xmm1);
-  __ j(below_equal, &slow);
-
-  // Do a truncating conversion.
-  __ cvttsd2si(eax, Operand(xmm0));
-
-  // Check if the result fits into a smi. Note this also checks for
-  // 0x80000000 which signals a failed conversion.
-  Label wont_fit_into_smi;
-  __ test(eax, Immediate(0xc0000000));
-  __ j(not_zero, &wont_fit_into_smi);
-
-  // Smi tag and return.
-  __ SmiTag(eax);
-  __ bind(&smi);
-  __ ret(2 * kPointerSize);
-
-  // Check if the argument is < 2^kMantissaBits.
-  Label already_round;
-  __ bind(&wont_fit_into_smi);
-  __ LoadPowerOf2(xmm1, ebx, HeapNumber::kMantissaBits);
-  __ ucomisd(xmm0, xmm1);
-  __ j(above_equal, &already_round);
-
-  // Save a copy of the argument.
-  __ movaps(xmm2, xmm0);
-
-  // Compute (argument + 2^kMantissaBits) - 2^kMantissaBits.
-  __ addsd(xmm0, xmm1);
-  __ subsd(xmm0, xmm1);
-
-  // Compare the argument and the tentative result to get the right mask:
-  //   if xmm2 < xmm0:
-  //     xmm2 = 1...1
-  //   else:
-  //     xmm2 = 0...0
-  __ cmpltsd(xmm2, xmm0);
-
-  // Subtract 1 if the argument was less than the tentative result.
-  __ LoadPowerOf2(xmm1, ebx, 0);
-  __ andpd(xmm1, xmm2);
-  __ subsd(xmm0, xmm1);
-
-  // Return a new heap number.
-  __ AllocateHeapNumber(eax, ebx, edx, &slow);
-  __ movsd(FieldOperand(eax, HeapNumber::kValueOffset), xmm0);
-  __ ret(2 * kPointerSize);
-
-  // Return the argument (when it's an already round heap number).
-  __ bind(&already_round);
-  __ mov(eax, Operand(esp, 1 * kPointerSize));
-  __ ret(2 * kPointerSize);
-
-  __ bind(&slow);
-  // We do not have to patch the receiver because the function makes no use of
-  // it.
-  GenerateJumpFunctionIgnoreReceiver(function);
-
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
-Handle<Code> CallStubCompiler::CompileMathAbsCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  const int argc = arguments().immediate();
-
-  // If the object is not a JSObject or we got an unexpected number of
-  // arguments, bail out to the regular call.
-  if (!object->IsJSObject() || argc != 1) {
-    return Handle<Code>::null();
-  }
-
-  Label miss;
-
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-  if (!cell.is_null()) {
-    ASSERT(cell->value() == *function);
-    GenerateLoadFunctionFromCell(cell, function, &miss);
-  }
-
-  // Load the (only) argument into eax.
-  __ mov(eax, Operand(esp, 1 * kPointerSize));
-
-  // Check if the argument is a smi.
-  Label not_smi;
-  STATIC_ASSERT(kSmiTag == 0);
-  __ JumpIfNotSmi(eax, &not_smi);
-
-  // Branchless abs implementation, refer to below:
-  // http://graphics.stanford.edu/~seander/bithacks.html#IntegerAbs
-  // Set ebx to 1...1 (== -1) if the argument is negative, or to 0...0
-  // otherwise.
-  __ mov(ebx, eax);
-  __ sar(ebx, kBitsPerInt - 1);
-
-  // Do bitwise not or do nothing depending on ebx.
-  __ xor_(eax, ebx);
-
-  // Add 1 or do nothing depending on ebx.
-  __ sub(eax, ebx);
-
-  // If the result is still negative, go to the slow case.
-  // This only happens for the most negative smi.
-  Label slow;
-  __ j(negative, &slow);
-
-  // Smi case done.
-  __ ret(2 * kPointerSize);
-
-  // Check if the argument is a heap number and load its exponent and
-  // sign into ebx.
-  __ bind(&not_smi);
-  __ CheckMap(eax, factory()->heap_number_map(), &slow, DONT_DO_SMI_CHECK);
-  __ mov(ebx, FieldOperand(eax, HeapNumber::kExponentOffset));
-
-  // Check the sign of the argument. If the argument is positive,
-  // just return it.
-  Label negative_sign;
-  __ test(ebx, Immediate(HeapNumber::kSignMask));
-  __ j(not_zero, &negative_sign);
-  __ ret(2 * kPointerSize);
-
-  // If the argument is negative, clear the sign, and return a new
-  // number.
-  __ bind(&negative_sign);
-  __ and_(ebx, ~HeapNumber::kSignMask);
-  __ mov(ecx, FieldOperand(eax, HeapNumber::kMantissaOffset));
-  __ AllocateHeapNumber(eax, edi, edx, &slow);
-  __ mov(FieldOperand(eax, HeapNumber::kExponentOffset), ebx);
-  __ mov(FieldOperand(eax, HeapNumber::kMantissaOffset), ecx);
-  __ ret(2 * kPointerSize);
-
-  __ bind(&slow);
-  // We do not have to patch the receiver because the function makes no use of
-  // it.
-  GenerateJumpFunctionIgnoreReceiver(function);
-
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
 Handle<Code> CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Handle<Object> object,