Revert "Replacing TrySync with Metadata"

runtime/vm/flow_graph_compiler_mips.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_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 1080 matching lines @@
   __ break_(0);
   GenerateDeferredCode();
 }
 
 
 void FlowGraphCompiler::GenerateCall(TokenPosition token_pos,
                                      const StubEntry& stub_entry,
                                      RawPcDescriptors::Kind kind,
                                      LocationSummary* locs) {
   __ BranchLink(stub_entry);
-  EmitCallsiteMetaData(token_pos, Thread::kNoDeoptId, kind, locs);
+  AddCurrentDescriptor(kind, Thread::kNoDeoptId, token_pos);
+  RecordSafepoint(locs);
 }
 
 
 void FlowGraphCompiler::GeneratePatchableCall(TokenPosition token_pos,
                                               const StubEntry& stub_entry,
                                               RawPcDescriptors::Kind kind,
                                               LocationSummary* locs) {
   __ BranchLinkPatchable(stub_entry);
-  EmitCallsiteMetaData(token_pos, Thread::kNoDeoptId, kind, locs);
+  AddCurrentDescriptor(kind, Thread::kNoDeoptId, token_pos);
+  RecordSafepoint(locs);
 }
 
 
 void FlowGraphCompiler::GenerateDartCall(intptr_t deopt_id,
                                          TokenPosition token_pos,
                                          const StubEntry& stub_entry,
                                          RawPcDescriptors::Kind kind,
                                          LocationSummary* locs) {
   __ BranchLinkPatchable(stub_entry);
-  EmitCallsiteMetaData(token_pos, deopt_id, kind, locs);
+  AddCurrentDescriptor(kind, deopt_id, token_pos);
+  RecordSafepoint(locs);
   // Marks either the continuation point in unoptimized code or the
   // deoptimization point in optimized code, after call.
   const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id);
   if (is_optimizing()) {
     AddDeoptIndexAtCall(deopt_id_after);
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
     AddCurrentDescriptor(RawPcDescriptors::kDeopt, deopt_id_after, token_pos);
   }
 }
 
 
 void FlowGraphCompiler::GenerateStaticDartCall(intptr_t deopt_id,
                                                TokenPosition token_pos,
                                                const StubEntry& stub_entry,
                                                RawPcDescriptors::Kind kind,
                                                LocationSummary* locs,
                                                const Function& target) {
   // Call sites to the same target can share object pool entries. These
   // call sites are never patched for breakpoints: the function is deoptimized
   // and the unoptimized code with IC calls for static calls is patched instead.
   ASSERT(is_optimizing());
   __ BranchLinkWithEquivalence(stub_entry, target);
 
-  EmitCallsiteMetaData(token_pos, deopt_id, kind, locs);
+  AddCurrentDescriptor(kind, deopt_id, token_pos);
+  RecordSafepoint(locs);
   // Marks either the continuation point in unoptimized code or the
   // deoptimization point in optimized code, after call.
   const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id);
   if (is_optimizing()) {
     AddDeoptIndexAtCall(deopt_id_after);
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
     AddCurrentDescriptor(RawPcDescriptors::kDeopt, deopt_id_after, token_pos);
   }
   AddStaticCallTarget(target);
 }
 
 
 void FlowGraphCompiler::GenerateRuntimeCall(TokenPosition token_pos,
                                             intptr_t deopt_id,
                                             const RuntimeEntry& entry,
                                             intptr_t argument_count,
                                             LocationSummary* locs) {
   __ CallRuntime(entry, argument_count);
-  EmitCallsiteMetaData(token_pos, deopt_id, RawPcDescriptors::kOther, locs);
+  AddCurrentDescriptor(RawPcDescriptors::kOther, deopt_id, token_pos);
+  RecordSafepoint(locs);
   if (deopt_id != Thread::kNoDeoptId) {
     // Marks either the continuation point in unoptimized code or the
     // deoptimization point in optimized code, after call.
     const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id);
     if (is_optimizing()) {
       AddDeoptIndexAtCall(deopt_id_after);
     } else {
       // Add deoptimization continuation point after the call and before the
       // arguments are removed.
       AddCurrentDescriptor(RawPcDescriptors::kDeopt, deopt_id_after, token_pos);
@@ skipping 110 matching lines @@
     AddCurrentDescriptor(RawPcDescriptors::kOther, Thread::kNoDeoptId,
                          token_pos);
     AddDeoptIndexAtCall(deopt_id_after);
   } else {
     AddCurrentDescriptor(RawPcDescriptors::kOther, Thread::kNoDeoptId,
                          token_pos);
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
     AddCurrentDescriptor(RawPcDescriptors::kDeopt, deopt_id_after, token_pos);
   }
-  EmitCatchEntryState(pending_deoptimization_env_, try_index);
   __ Drop(argument_count);
 }
 
 
 void FlowGraphCompiler::EmitSwitchableInstanceCall(const ICData& ic_data,
                                                    intptr_t argument_count,
                                                    intptr_t deopt_id,
                                                    TokenPosition token_pos,
                                                    LocationSummary* locs) {
   ASSERT(ic_data.NumArgsTested() == 1);
   const Code& initial_stub =
       Code::ZoneHandle(StubCode::ICCallThroughFunction_entry()->code());
 
   __ Comment("SwitchableCall");
   __ lw(T0, Address(SP, (argument_count - 1) * kWordSize));
   __ LoadUniqueObject(CODE_REG, initial_stub);
   __ lw(T9, FieldAddress(CODE_REG, Code::checked_entry_point_offset()));
   __ LoadUniqueObject(S5, ic_data);
   __ jalr(T9);
 
-  EmitCallsiteMetaData(token_pos, Thread::kNoDeoptId, RawPcDescriptors::kOther,
-                       locs);
+  AddCurrentDescriptor(RawPcDescriptors::kOther, Thread::kNoDeoptId, token_pos);
+  RecordSafepoint(locs);
   const intptr_t deopt_id_after = Thread::ToDeoptAfter(deopt_id);
   if (is_optimizing()) {
     AddDeoptIndexAtCall(deopt_id_after);
   } else {
     // Add deoptimization continuation point after the call and before the
     // arguments are removed.
     AddCurrentDescriptor(RawPcDescriptors::kDeopt, deopt_id_after, token_pos);
   }
   __ Drop(argument_count);
 }
@@ skipping 534 matching lines @@
   __ AddImmediate(SP, kDoubleSize);
 }
 
 
 #undef __
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS