Replaces Location::ToStackSlotAddress() with Location::ToStackSlotOffset()

runtime/vm/flow_graph_compiler_x64.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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 731 matching lines @@
     }
     AllocateRegistersLocally(instr);
   } else if (instr->MayThrow()  &&
              (CurrentTryIndex() != CatchClauseNode::kInvalidTryIndex)) {
     // Optimized try-block: Sync locals to fixed stack locations.
     EmitTrySync(instr, CurrentTryIndex());
   }
 }
 
 
-void FlowGraphCompiler::EmitTrySyncMove(Address dest,
+void FlowGraphCompiler::EmitTrySyncMove(intptr_t dest_offset,
                                         Location loc,
                                         bool* push_emitted) {
+  const Address dest(RBP, dest_offset);
   if (loc.IsConstant()) {
     if (!*push_emitted) {
       __ pushq(RAX);
       *push_emitted = true;
     }
     __ LoadObject(RAX, loc.constant());
     __ movq(dest, RAX);
   } else if (loc.IsRegister()) {
     if (*push_emitted && loc.reg() == RAX) {
       __ movq(RAX, Address(RSP, 0));
@@ skipping 22 matching lines @@
       flow_graph().graph_entry()->GetCatchEntry(try_index);
   const GrowableArray<Definition*>* idefs = catch_block->initial_definitions();
   // Parameters.
   intptr_t i = 0;
   bool push_emitted = false;
   const intptr_t num_non_copied_params = flow_graph().num_non_copied_params();
   const intptr_t param_base = kParamEndSlotFromFp + num_non_copied_params;
   for (; i < num_non_copied_params; ++i) {
     if ((*idefs)[i]->IsConstant()) continue;  // Common constants
     Location loc = env->LocationAt(i);
-    Address dest(RBP, (param_base - i) * kWordSize);
-    EmitTrySyncMove(dest, loc, &push_emitted);
+    EmitTrySyncMove((param_base - i) * kWordSize, loc, &push_emitted);
   }
 
   // Process locals. Skip exception_var and stacktrace_var.
   CatchEntryInstr* catch_entry = catch_block->next()->AsCatchEntry();
   intptr_t local_base = kFirstLocalSlotFromFp + num_non_copied_params;
   intptr_t ex_idx = local_base - catch_entry->exception_var().index();
   intptr_t st_idx = local_base - catch_entry->stacktrace_var().index();
   for (; i < flow_graph().variable_count(); ++i) {
     if (i == ex_idx || i == st_idx) continue;
     if ((*idefs)[i]->IsConstant()) continue;
     Location loc = env->LocationAt(i);
-    Address dest(RBP, (local_base - i) * kWordSize);
-    EmitTrySyncMove(dest, loc, &push_emitted);
+    EmitTrySyncMove((local_base - i) * kWordSize, loc, &push_emitted);
     // Update safepoint bitmap to indicate that the target location
     // now contains a pointer.
     instr->locs()->stack_bitmap()->Set(i - num_non_copied_params, true);
   }
   if (push_emitted) {
     __ popq(RAX);
   }
 }
 
 
@@ skipping 1051 matching lines @@
 void ParallelMoveResolver::Exchange(Register reg, const Address& mem) {
   __ Exchange(reg, mem);
 }
 
 
 void ParallelMoveResolver::Exchange(const Address& mem1, const Address& mem2) {
   __ Exchange(mem1, mem2);
 }
 
 
+void ParallelMoveResolver::Exchange(Register reg, intptr_t stack_offset) {
+  UNREACHABLE();
+}
+
+
+void ParallelMoveResolver::Exchange(intptr_t stack_offset1,
+                                    intptr_t stack_offset2) {
+  UNREACHABLE();
+}
+
+
 void ParallelMoveResolver::SpillScratch(Register reg) {
   __ pushq(reg);
 }
 
 
 void ParallelMoveResolver::RestoreScratch(Register reg) {
   __ popq(reg);
 }
 
 
 void ParallelMoveResolver::SpillFpuScratch(FpuRegister reg) {
   __ subq(RSP, Immediate(kFpuRegisterSize));
   __ movups(Address(RSP, 0), reg);
 }
 
 
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   __ movups(reg, Address(RSP, 0));
   __ addq(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64