Relax representation requirement in FrameStates.

test/unittests/compiler/instruction-selector-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "test/unittests/compiler/instruction-selector-unittest.h"
 
 #include "src/flags.h"
 #include "test/unittests/compiler/compiler-test-utils.h"
 
 namespace v8 {
@@ skipping 339 matching lines @@
 
   BailoutId bailout_id_before(42);
 
   // Some arguments for the call node.
   Node* function_node = m.Parameter(0);
   Node* receiver = m.Parameter(1);
   Node* context = m.Int32Constant(1);  // Context is ignored.
 
   // Build frame state for the state before the call.
   Node* parameters = m.NewNode(m.common()->StateValues(1), m.Int32Constant(43));
-  Node* locals = m.NewNode(m.common()->StateValues(1), m.Int32Constant(44));
-  Node* stack = m.NewNode(m.common()->StateValues(1), m.Int32Constant(45));
+  Node* locals = m.NewNode(m.common()->StateValues(1), m.Float64Constant(0.5));
+  Node* stack = m.NewNode(m.common()->StateValues(1), m.UndefinedConstant());
 
   Node* context_sentinel = m.Int32Constant(0);
   Node* frame_state_before = m.NewNode(
       m.common()->FrameState(JS_FRAME, bailout_id_before,
                              OutputFrameStateCombine::Push()),
       parameters, locals, stack, context_sentinel, m.UndefinedConstant());
 
   // Build the call.
   Node* call = m.CallFunctionStub0(function_node, receiver, context,
                                    frame_state_before, CALL_AS_METHOD);
@@ skipping 28 matching lines @@
   int32_t deopt_id_before = s.ToInt32(call_instr->InputAt(1));
   FrameStateDescriptor* desc_before =
       s.GetFrameStateDescriptor(deopt_id_before);
   EXPECT_EQ(bailout_id_before, desc_before->bailout_id());
   EXPECT_EQ(OutputFrameStateCombine::kPushOutput,
             desc_before->state_combine().kind());
   EXPECT_EQ(1u, desc_before->parameters_count());
   EXPECT_EQ(1u, desc_before->locals_count());
   EXPECT_EQ(1u, desc_before->stack_count());
   EXPECT_EQ(43, s.ToInt32(call_instr->InputAt(2)));
-  EXPECT_EQ(0, s.ToInt32(call_instr->InputAt(3)));
-  EXPECT_EQ(44, s.ToInt32(call_instr->InputAt(4)));
-  EXPECT_EQ(45, s.ToInt32(call_instr->InputAt(5)));
+  EXPECT_EQ(0, s.ToInt32(call_instr->InputAt(3)));  // This should be a context.
+                                                    // We inserted 0 here.
+  EXPECT_EQ(0.5, s.ToFloat64(call_instr->InputAt(4)));
+  EXPECT_TRUE(s.ToHeapObject(call_instr->InputAt(5))->IsUndefined());
+  EXPECT_EQ(kMachInt32, desc_before->GetType(0));
+  EXPECT_EQ(kMachAnyTagged, desc_before->GetType(1));  // context is always
+                                                       // tagged/any.
+  EXPECT_EQ(kMachFloat64, desc_before->GetType(2));
+  EXPECT_EQ(kMachAnyTagged, desc_before->GetType(3));
 
   // Function.
   EXPECT_EQ(function_node->id(), s.ToVreg(call_instr->InputAt(6)));
   // Context.
   EXPECT_EQ(context->id(), s.ToVreg(call_instr->InputAt(7)));
 
   EXPECT_EQ(kArchRet, s[index++]->arch_opcode());
 
   EXPECT_EQ(index, s.size());
 }
@@ skipping 17 matching lines @@
   Node* locals = m.NewNode(m.common()->StateValues(1), m.Int32Constant(64));
   Node* stack = m.NewNode(m.common()->StateValues(1), m.Int32Constant(65));
   Node* frame_state_parent =
       m.NewNode(m.common()->FrameState(JS_FRAME, bailout_id_parent,
                                        OutputFrameStateCombine::Ignore()),
                 parameters, locals, stack, context, m.UndefinedConstant());
 
   Node* context2 = m.Int32Constant(46);
   Node* parameters2 =
       m.NewNode(m.common()->StateValues(1), m.Int32Constant(43));
-  Node* locals2 = m.NewNode(m.common()->StateValues(1), m.Int32Constant(44));
-  Node* stack2 = m.NewNode(m.common()->StateValues(1), m.Int32Constant(45));
+  Node* locals2 =
+      m.NewNode(m.common()->StateValues(1), m.Float64Constant(0.25));
+  Node* stack2 = m.NewNode(m.common()->StateValues(2), m.Int32Constant(44),
+                           m.Int32Constant(45));
   Node* frame_state_before =
       m.NewNode(m.common()->FrameState(JS_FRAME, bailout_id_before,
                                        OutputFrameStateCombine::Push()),
                 parameters2, locals2, stack2, context2, frame_state_parent);
 
   // Build the call.
   Node* call = m.CallFunctionStub0(function_node, receiver, context2,
                                    frame_state_before, CALL_AS_METHOD);
 
   m.Return(call);
 
   Stream s = m.Build(kAllExceptNopInstructions);
 
   // Skip until kArchCallJSFunction.
   size_t index = 0;
   for (; index < s.size() && s[index]->arch_opcode() != kArchCallCodeObject;
        index++) {
   }
   // Now we should have three instructions: call, return.
   EXPECT_EQ(index + 2, s.size());
 
   // Check the call instruction
   const Instruction* call_instr = s[index++];
   EXPECT_EQ(kArchCallCodeObject, call_instr->arch_opcode());
   size_t num_operands =
       1 +  // Code object.
       1 +  // Frame state deopt id
-      4 +  // One input for each value in frame state + context.
+      5 +  // One input for each value in frame state + context.
       4 +  // One input for each value in the parent frame state + context.
       1 +  // Function.
       1;   // Context.
   EXPECT_EQ(num_operands, call_instr->InputCount());
   // Code object.
   EXPECT_TRUE(call_instr->InputAt(0)->IsImmediate());
 
   // Deoptimization id.
   int32_t deopt_id_before = s.ToInt32(call_instr->InputAt(1));
   FrameStateDescriptor* desc_before =
       s.GetFrameStateDescriptor(deopt_id_before);
+  FrameStateDescriptor* desc_before_outer = desc_before->outer_state();
   EXPECT_EQ(bailout_id_before, desc_before->bailout_id());
+  EXPECT_EQ(1u, desc_before_outer->parameters_count());
+  EXPECT_EQ(1u, desc_before_outer->locals_count());
+  EXPECT_EQ(1u, desc_before_outer->stack_count());
+  // Values from parent environment.
+  EXPECT_EQ(63, s.ToInt32(call_instr->InputAt(2)));
+  EXPECT_EQ(kMachInt32, desc_before_outer->GetType(0));
+  // Context:
+  EXPECT_EQ(66, s.ToInt32(call_instr->InputAt(3)));
+  EXPECT_EQ(kMachAnyTagged, desc_before_outer->GetType(1));
+  EXPECT_EQ(64, s.ToInt32(call_instr->InputAt(4)));
+  EXPECT_EQ(kMachInt32, desc_before_outer->GetType(2));
+  EXPECT_EQ(65, s.ToInt32(call_instr->InputAt(5)));
+  EXPECT_EQ(kMachInt32, desc_before_outer->GetType(3));
+  // Values from the nested frame.
   EXPECT_EQ(1u, desc_before->parameters_count());
   EXPECT_EQ(1u, desc_before->locals_count());
-  EXPECT_EQ(1u, desc_before->stack_count());
-  EXPECT_EQ(63, s.ToInt32(call_instr->InputAt(2)));
-  // Context:
-  EXPECT_EQ(66, s.ToInt32(call_instr->InputAt(3)));
-  EXPECT_EQ(64, s.ToInt32(call_instr->InputAt(4)));
-  EXPECT_EQ(65, s.ToInt32(call_instr->InputAt(5)));
-  // Values from parent environment should follow.
+  EXPECT_EQ(2u, desc_before->stack_count());
   EXPECT_EQ(43, s.ToInt32(call_instr->InputAt(6)));
+  EXPECT_EQ(kMachInt32, desc_before->GetType(0));
   EXPECT_EQ(46, s.ToInt32(call_instr->InputAt(7)));
-  EXPECT_EQ(44, s.ToInt32(call_instr->InputAt(8)));
-  EXPECT_EQ(45, s.ToInt32(call_instr->InputAt(9)));
+  EXPECT_EQ(kMachAnyTagged, desc_before->GetType(1));
+  EXPECT_EQ(0.25, s.ToFloat64(call_instr->InputAt(8)));
+  EXPECT_EQ(kMachFloat64, desc_before->GetType(2));
+  EXPECT_EQ(44, s.ToInt32(call_instr->InputAt(9)));
+  EXPECT_EQ(kMachInt32, desc_before->GetType(3));
+  EXPECT_EQ(45, s.ToInt32(call_instr->InputAt(10)));
+  EXPECT_EQ(kMachInt32, desc_before->GetType(4));
 
   // Function.
-  EXPECT_EQ(function_node->id(), s.ToVreg(call_instr->InputAt(10)));
+  EXPECT_EQ(function_node->id(), s.ToVreg(call_instr->InputAt(11)));
   // Context.
-  EXPECT_EQ(context2->id(), s.ToVreg(call_instr->InputAt(11)));
+  EXPECT_EQ(context2->id(), s.ToVreg(call_instr->InputAt(12)));
   // Continuation.
 
   EXPECT_EQ(kArchRet, s[index++]->arch_opcode());
   EXPECT_EQ(index, s.size());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8