Initial support for debugger frame state in Turbofan.

src/compiler/arm/instruction-selector-arm.cc

Index: src/compiler/arm/instruction-selector-arm.cc
diff --git a/src/compiler/arm/instruction-selector-arm.cc b/src/compiler/arm/instruction-selector-arm.cc
index 585056862725e4f717f2d0b3369bcb8f7c51d97d..3b2dbf53ed9a8b7df62f3660a7630555da8d0cf3 100644
--- a/src/compiler/arm/instruction-selector-arm.cc
+++ b/src/compiler/arm/instruction-selector-arm.cc
@@ -785,7 +785,14 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
                                     BasicBlock* deoptimization) {
   ArmOperandGenerator g(this);
   CallDescriptor* descriptor = OpParameter<CallDescriptor*>(call);
-  CallBuffer buffer(zone(), descriptor);  // TODO(turbofan): temp zone here?
+
+  FrameStateDescriptor* frame_state_descriptor = NULL;
+  if (descriptor->NeedsFrameState()) {
+    frame_state_descriptor =
+        GetFrameStateDescriptor(call->InputAt(descriptor->InputCount()));
+  }
+
+  CallBuffer buffer(zone(), descriptor, frame_state_descriptor);
 
   // Compute InstructionOperands for inputs and outputs.
   // TODO(turbofan): on ARM64 it's probably better to use the code object in a
@@ -796,7 +803,7 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
 
   // TODO(dcarney): might be possible to use claim/poke instead
   // Push any stack arguments.
-  for (int i = buffer.pushed_count - 1; i >= 0; --i) {
+  for (int i = buffer.pushed_nodes.size() - 1; i >= 0; --i) {
     Node* input = buffer.pushed_nodes[i];
     Emit(kArmPush, NULL, g.UseRegister(input));
   }
@@ -805,8 +812,7 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
   InstructionCode opcode;
   switch (descriptor->kind()) {
     case CallDescriptor::kCallCodeObject: {
-      bool lazy_deopt = descriptor->CanLazilyDeoptimize();
-      opcode = kArmCallCodeObject | MiscField::encode(lazy_deopt ? 1 : 0);
+      opcode = kArmCallCodeObject;
       break;
     }
     case CallDescriptor::kCallAddress:
@@ -819,11 +825,12 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
       UNREACHABLE();
       return;
   }
+  opcode |= MiscField::encode(descriptor->deoptimization_support());
 
   // Emit the call instruction.
   Instruction* call_instr =
-      Emit(opcode, buffer.output_count, buffer.outputs,
-           buffer.fixed_and_control_count(), buffer.fixed_and_control_args);
+      Emit(opcode, buffer.outputs.size(), &buffer.outputs.front(),
+           buffer.instruction_args.size(), &buffer.instruction_args.front());
 
   call_instr->MarkAsCall();
   if (deoptimization != NULL) {
@@ -833,9 +840,9 @@ void InstructionSelector::VisitCall(Node* call, BasicBlock* continuation,
 
   // Caller clean up of stack for C-style calls.
   if (descriptor->kind() == CallDescriptor::kCallAddress &&
-      buffer.pushed_count > 0) {
+      !buffer.pushed_nodes.empty()) {
     DCHECK(deoptimization == NULL && continuation == NULL);
-    Emit(kArmDrop | MiscField::encode(buffer.pushed_count), NULL);
+    Emit(kArmDrop | MiscField::encode(buffer.pushed_nodes.size()), NULL);
   }
 }