Removed dead code: GenericUnaryOpStub is not used anymore, as a consequence, NegativeZeroHandling...

src/arm/code-stubs-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 3184 matching lines @@
       return Runtime::kAbort;
   }
 }
 
 
 void StackCheckStub::Generate(MacroAssembler* masm) {
   __ TailCallRuntime(Runtime::kStackGuard, 0, 1);
 }
 
 
-void GenericUnaryOpStub::Generate(MacroAssembler* masm) {
-  Label slow, done;
-
-  Register heap_number_map = r6;
-  __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex);
-
-  if (op_ == Token::SUB) {
-    if (include_smi_code_) {
-      // Check whether the value is a smi.
-      Label try_float;
-      __ tst(r0, Operand(kSmiTagMask));
-      __ b(ne, &try_float);
-
-      // Go slow case if the value of the expression is zero
-      // to make sure that we switch between 0 and -0.
-      if (negative_zero_ == kStrictNegativeZero) {
-        // If we have to check for zero, then we can check for the max negative
-        // smi while we are at it.
-        __ bic(ip, r0, Operand(0x80000000), SetCC);
-        __ b(eq, &slow);
-        __ rsb(r0, r0, Operand(0, RelocInfo::NONE));
-        __ Ret();
-      } else {
-        // The value of the expression is a smi and 0 is OK for -0.  Try
-        // optimistic subtraction '0 - value'.
-        __ rsb(r0, r0, Operand(0, RelocInfo::NONE), SetCC);
-        __ Ret(vc);
-        // We don't have to reverse the optimistic neg since the only case
-        // where we fall through is the minimum negative Smi, which is the case
-        // where the neg leaves the register unchanged.
-        __ jmp(&slow);  // Go slow on max negative Smi.
-      }
-      __ bind(&try_float);
-    } else if (FLAG_debug_code) {
-      __ tst(r0, Operand(kSmiTagMask));
-      __ Assert(ne, "Unexpected smi operand.");
-    }
-
-    __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
-    __ AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex);
-    __ cmp(r1, heap_number_map);
-    __ b(ne, &slow);
-    // r0 is a heap number.  Get a new heap number in r1.
-    if (overwrite_ == UNARY_OVERWRITE) {
-      __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
-      __ eor(r2, r2, Operand(HeapNumber::kSignMask));  // Flip sign.
-      __ str(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
-    } else {
-      __ AllocateHeapNumber(r1, r2, r3, r6, &slow);
-      __ ldr(r3, FieldMemOperand(r0, HeapNumber::kMantissaOffset));
-      __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
-      __ str(r3, FieldMemOperand(r1, HeapNumber::kMantissaOffset));
-      __ eor(r2, r2, Operand(HeapNumber::kSignMask));  // Flip sign.
-      __ str(r2, FieldMemOperand(r1, HeapNumber::kExponentOffset));
-      __ mov(r0, Operand(r1));
-    }
-  } else if (op_ == Token::BIT_NOT) {
-    if (include_smi_code_) {
-      Label non_smi;
-      __ JumpIfNotSmi(r0, &non_smi);
-      __ mvn(r0, Operand(r0));
-      // Bit-clear inverted smi-tag.
-      __ bic(r0, r0, Operand(kSmiTagMask));
-      __ Ret();
-      __ bind(&non_smi);
-    } else if (FLAG_debug_code) {
-      __ tst(r0, Operand(kSmiTagMask));
-      __ Assert(ne, "Unexpected smi operand.");
-    }
-
-    // Check if the operand is a heap number.
-    __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
-    __ AssertRegisterIsRoot(heap_number_map, Heap::kHeapNumberMapRootIndex);
-    __ cmp(r1, heap_number_map);
-    __ b(ne, &slow);
-
-    // Convert the heap number is r0 to an untagged integer in r1.
-    __ ConvertToInt32(r0, r1, r2, r3, d0, &slow);
-
-    // Do the bitwise operation (move negated) and check if the result
-    // fits in a smi.
-    Label try_float;
-    __ mvn(r1, Operand(r1));
-    __ add(r2, r1, Operand(0x40000000), SetCC);
-    __ b(mi, &try_float);
-    __ mov(r0, Operand(r1, LSL, kSmiTagSize));
-    __ b(&done);
-
-    __ bind(&try_float);
-    if (!overwrite_ == UNARY_OVERWRITE) {
-      // Allocate a fresh heap number, but don't overwrite r0 until
-      // we're sure we can do it without going through the slow case
-      // that needs the value in r0.
-      __ AllocateHeapNumber(r2, r3, r4, r6, &slow);
-      __ mov(r0, Operand(r2));
-    }
-
-    if (CpuFeatures::IsSupported(VFP3)) {
-      // Convert the int32 in r1 to the heap number in r0. r2 is corrupted.
-      CpuFeatures::Scope scope(VFP3);
-      __ vmov(s0, r1);
-      __ vcvt_f64_s32(d0, s0);
-      __ sub(r2, r0, Operand(kHeapObjectTag));
-      __ vstr(d0, r2, HeapNumber::kValueOffset);
-    } else {
-      // WriteInt32ToHeapNumberStub does not trigger GC, so we do not
-      // have to set up a frame.
-      WriteInt32ToHeapNumberStub stub(r1, r0, r2);
-      __ push(lr);
-      __ Call(stub.GetCode(), RelocInfo::CODE_TARGET);
-      __ pop(lr);
-    }
-  } else {
-    UNIMPLEMENTED();
-  }
-
-  __ bind(&done);
-  __ Ret();
-
-  // Handle the slow case by jumping to the JavaScript builtin.
-  __ bind(&slow);
-  __ push(r0);
-  switch (op_) {
-    case Token::SUB:
-      __ InvokeBuiltin(Builtins::UNARY_MINUS, JUMP_JS);
-      break;
-    case Token::BIT_NOT:
-      __ InvokeBuiltin(Builtins::BIT_NOT, JUMP_JS);
-      break;
-    default:
-      UNREACHABLE();
-  }
-}
-
-
 void MathPowStub::Generate(MacroAssembler* masm) {
   Label call_runtime;
 
   if (CpuFeatures::IsSupported(VFP3)) {
     CpuFeatures::Scope scope(VFP3);
 
     Label base_not_smi;
     Label exponent_not_smi;
     Label convert_exponent;
 
@@ skipping 2758 matching lines @@
   __ str(pc, MemOperand(sp, 0));
   __ Jump(target);  // Call the C++ function.
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM