VM: Re-format to use at most one newline between functions

runtime/vm/locations.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/locations.h"
 
 #include "vm/assembler.h"
 #include "vm/il_printer.h"
 #include "vm/log.h"
 #include "vm/stack_frame.h"
 
 namespace dart {
 
 intptr_t RegisterSet::RegisterCount(intptr_t registers) {
   // Brian Kernighan's algorithm for counting the bits set.
   intptr_t count = 0;
   while (registers != 0) {
     ++count;
     registers &= (registers - 1);  // Clear the least significant bit set.
   }
   return count;
 }
 
-
 LocationSummary::LocationSummary(Zone* zone,
                                  intptr_t input_count,
                                  intptr_t temp_count,
                                  LocationSummary::ContainsCall contains_call)
     : num_inputs_(input_count),
       num_temps_(temp_count),
       stack_bitmap_(NULL),
       contains_call_(contains_call),
       live_registers_() {
 #if defined(DEBUG)
   writable_inputs_ = 0;
 #endif
   input_locations_ = zone->Alloc<Location>(num_inputs_);
   temp_locations_ = zone->Alloc<Location>(num_temps_);
 }
 
-
 LocationSummary* LocationSummary::Make(
     Zone* zone,
     intptr_t input_count,
     Location out,
     LocationSummary::ContainsCall contains_call) {
   LocationSummary* summary =
       new (zone) LocationSummary(zone, input_count, 0, contains_call);
   for (intptr_t i = 0; i < input_count; i++) {
     summary->set_in(i, Location::RequiresRegister());
   }
   summary->set_out(0, out);
   return summary;
 }
 
-
 Location Location::Pair(Location first, Location second) {
   PairLocation* pair_location = new PairLocation();
   ASSERT((reinterpret_cast<intptr_t>(pair_location) & kLocationTagMask) == 0);
   pair_location->SetAt(0, first);
   pair_location->SetAt(1, second);
   Location loc(reinterpret_cast<uword>(pair_location) | kPairLocationTag);
   return loc;
 }
 
-
 PairLocation* Location::AsPairLocation() const {
   ASSERT(IsPairLocation());
   return reinterpret_cast<PairLocation*>(value_ & ~kLocationTagMask);
 }
 
-
 Location Location::RegisterOrConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafe(constant->value()))
              ? Location::Constant(constant)
              : Location::RequiresRegister();
 }
 
-
 Location Location::RegisterOrSmiConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafeSmi(constant->value()))
              ? Location::Constant(constant)
              : Location::RequiresRegister();
 }
 
-
 Location Location::WritableRegisterOrSmiConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafeSmi(constant->value()))
              ? Location::Constant(constant)
              : Location::WritableRegister();
 }
 
-
 Location Location::FixedRegisterOrConstant(Value* value, Register reg) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafe(constant->value()))
              ? Location::Constant(constant)
              : Location::RegisterLocation(reg);
 }
 
-
 Location Location::FixedRegisterOrSmiConstant(Value* value, Register reg) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafeSmi(constant->value()))
              ? Location::Constant(constant)
              : Location::RegisterLocation(reg);
 }
 
-
 Location Location::AnyOrConstant(Value* value) {
   ConstantInstr* constant = value->definition()->AsConstant();
   return ((constant != NULL) && Assembler::IsSafe(constant->value()))
              ? Location::Constant(constant)
              : Location::Any();
 }
 
-
 // DBC does not have an notion of 'address' in its instruction set.
 #if !defined(TARGET_ARCH_DBC)
 Address Location::ToStackSlotAddress() const {
   const intptr_t index = stack_index();
   const Register base = base_reg();
   if (base == FPREG) {
     if (index < 0) {
       const intptr_t offset = (kParamEndSlotFromFp - index) * kWordSize;
       return Address(base, offset);
     } else {
@@ skipping 16 matching lines @@
     } else {
       const intptr_t offset = (kFirstLocalSlotFromFp - index) * kWordSize;
       return offset;
     }
   } else {
     ASSERT(base_reg() == SPREG);
     return index * kWordSize;
   }
 }
 
-
 const Object& Location::constant() const {
   return constant_instruction()->value();
 }
 
-
 const char* Location::Name() const {
   switch (kind()) {
     case kInvalid:
       return "?";
     case kRegister:
       return Assembler::RegisterName(reg());
     case kFpuRegister:
       return Assembler::FpuRegisterName(fpu_reg());
     case kStackSlot:
       return "S";
@@ skipping 21 matching lines @@
       if (IsConstant()) {
         return "C";
       } else {
         ASSERT(IsPairLocation());
         return "2P";
       }
   }
   return "?";
 }
 
-
 void Location::PrintTo(BufferFormatter* f) const {
   if (!FLAG_support_il_printer) {
     return;
   }
   if (kind() == kStackSlot) {
     f->Print("S%+" Pd "", stack_index());
   } else if (kind() == kDoubleStackSlot) {
     f->Print("DS%+" Pd "", stack_index());
   } else if (kind() == kQuadStackSlot) {
     f->Print("QS%+" Pd "", stack_index());
   } else if (IsPairLocation()) {
     f->Print("(");
     AsPairLocation()->At(0).PrintTo(f);
     f->Print(", ");
     AsPairLocation()->At(1).PrintTo(f);
     f->Print(")");
   } else {
     f->Print("%s", Name());
   }
 }
 
-
 const char* Location::ToCString() const {
   char buffer[1024];
   BufferFormatter bf(buffer, 1024);
   PrintTo(&bf);
   return Thread::Current()->zone()->MakeCopyOfString(buffer);
 }
 
-
 void Location::Print() const {
   if (kind() == kStackSlot) {
     THR_Print("S%+" Pd "", stack_index());
   } else {
     THR_Print("%s", Name());
   }
 }
 
-
 Location Location::Copy() const {
   if (IsPairLocation()) {
     PairLocation* pair = AsPairLocation();
     ASSERT(!pair->At(0).IsPairLocation());
     ASSERT(!pair->At(1).IsPairLocation());
     return Location::Pair(pair->At(0).Copy(), pair->At(1).Copy());
   } else {
     // Copy by value.
     return *this;
   }
 }
 
-
 Location Location::RemapForSlowPath(Definition* def,
                                     intptr_t* cpu_reg_slots,
                                     intptr_t* fpu_reg_slots) const {
   if (IsRegister()) {
     intptr_t index = cpu_reg_slots[reg()];
     ASSERT(index >= 0);
     return Location::StackSlot(index);
   } else if (IsFpuRegister()) {
     intptr_t index = fpu_reg_slots[fpu_reg()];
     ASSERT(index >= 0);
@@ skipping 32 matching lines @@
     return Location::Pair(Location::StackSlot(index_lo),
                           Location::StackSlot(index_hi));
   } else if (IsInvalid() && def->IsMaterializeObject()) {
     def->AsMaterializeObject()->RemapRegisters(cpu_reg_slots, fpu_reg_slots);
     return *this;
   }
 
   return *this;
 }
 
-
 void LocationSummary::PrintTo(BufferFormatter* f) const {
   if (!FLAG_support_il_printer) {
     return;
   }
   if (input_count() > 0) {
     f->Print(" (");
     for (intptr_t i = 0; i < input_count(); i++) {
       if (i != 0) f->Print(", ");
       in(i).PrintTo(f);
     }
@@ skipping 10 matching lines @@
   }
 
   if (!out(0).IsInvalid()) {
     f->Print(" => ");
     out(0).PrintTo(f);
   }
 
   if (always_calls()) f->Print(" C");
 }
 
-
 #if defined(DEBUG)
 void LocationSummary::DiscoverWritableInputs() {
   if (!HasCallOnSlowPath()) {
     return;
   }
 
   for (intptr_t i = 0; i < input_count(); i++) {
     if (in(i).IsUnallocated() &&
         (in(i).policy() == Location::kWritableRegister)) {
       writable_inputs_ |= 1 << i;
     }
   }
 }
 
-
 void LocationSummary::CheckWritableInputs() {
   ASSERT(HasCallOnSlowPath());
   for (intptr_t i = 0; i < input_count(); i++) {
     if ((writable_inputs_ & (1 << i)) != 0) {
       // Writable registers have to be manually preserved because
       // with the right representation because register allocator does not know
       // how they are used within the instruction template.
       ASSERT(in(i).IsMachineRegister());
       ASSERT(live_registers()->Contains(in(i)));
     }
   }
 }
 #endif
 
 }  // namespace dart