[interpreter][stubs] Fixing issues found by machine graph verifier.

src/interpreter/interpreter-assembler.h

Index: src/interpreter/interpreter-assembler.h
diff --git a/src/interpreter/interpreter-assembler.h b/src/interpreter/interpreter-assembler.h
index ebf449164b1e1c99b810f21cb834a9155a3ba61a..7e12ac9fd64bff990790927683a731c9834f2741 100644
--- a/src/interpreter/interpreter-assembler.h
+++ b/src/interpreter/interpreter-assembler.h
@@ -24,28 +24,37 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
                        OperandScale operand_scale);
   virtual ~InterpreterAssembler();
 
-  // Returns the count immediate for bytecode operand |operand_index| in the
-  // current bytecode.
+  // Returns the 32-bit unsigned count immediate for bytecode operand
+  // |operand_index| in the current bytecode.
   compiler::Node* BytecodeOperandCount(int operand_index);
-  // Returns the 8-bit flag for bytecode operand |operand_index| in the
-  // current bytecode.
+  // Returns the 32-bit unsigned flag for bytecode operand |operand_index|
+  // in the current bytecode.
   compiler::Node* BytecodeOperandFlag(int operand_index);
-  // Returns the index immediate for bytecode operand |operand_index| in the
-  // current bytecode.
+  // Returns the 32-bit zero-extended index immediate for bytecode operand
+  // |operand_index| in the current bytecode.
   compiler::Node* BytecodeOperandIdx(int operand_index);
-  // Returns the UImm8 immediate for bytecode operand |operand_index| in the
-  // current bytecode.
+  // Returns the smi index immediate for bytecode operand |operand_index|
+  // in the current bytecode.
+  compiler::Node* BytecodeOperandIdxSmi(int operand_index);
+  // Returns the 32-bit unsigned immediate for bytecode operand |operand_index|
+  // in the current bytecode.
   compiler::Node* BytecodeOperandUImm(int operand_index);
-  // Returns the Imm8 immediate for bytecode operand |operand_index| in the
-  // current bytecode.
+  // Returns the 32-bit signed immediate for bytecode operand |operand_index|
+  // in the current bytecode.
   compiler::Node* BytecodeOperandImm(int operand_index);
-  // Returns the register index for bytecode operand |operand_index| in the
+  // Returns the word-size signed immediate for bytecode operand |operand_index|
+  // in the current bytecode.
+  compiler::Node* BytecodeOperandImmIntPtr(int operand_index);
+  // Returns the smi immediate for bytecode operand |operand_index| in the
   // current bytecode.
+  compiler::Node* BytecodeOperandImmSmi(int operand_index);
+  // Returns the word-size sign-extended register index for bytecode operand
+  // |operand_index| in the current bytecode.
   compiler::Node* BytecodeOperandReg(int operand_index);
-  // Returns the runtime id immediate for bytecode operand
+  // Returns the 32-bit unsigned runtime id immediate for bytecode operand
   // |operand_index| in the current bytecode.
   compiler::Node* BytecodeOperandRuntimeId(int operand_index);
-  // Returns the intrinsic id immediate for bytecode operand
+  // Returns the 32-bit unsigned intrinsic id immediate for bytecode operand
   // |operand_index| in the current bytecode.
   compiler::Node* BytecodeOperandIntrinsicId(int operand_index);
 
@@ -218,8 +227,8 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   // Traces the current bytecode by calling |function_id|.
   void TraceBytecode(Runtime::FunctionId function_id);
 
-  // Updates the bytecode array's interrupt budget by |weight| and calls
-  // Runtime::kInterrupt if counter reaches zero.
+  // Updates the bytecode array's interrupt budget by a 32-bit signed |weight|
+  // and calls Runtime::kInterrupt if counter reaches zero.
   void UpdateInterruptBudget(compiler::Node* weight);
 
   // Returns the offset of register |index| relative to RegisterFilePointer().
@@ -236,6 +245,7 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   compiler::Node* BytecodeOperandReadUnaligned(int relative_offset,
                                                MachineType result_type);
 
+  // Returns zero- or sign-extended to word32 value of the operand.
   compiler::Node* BytecodeOperandUnsignedByte(int operand_index);
   compiler::Node* BytecodeOperandSignedByte(int operand_index);
   compiler::Node* BytecodeOperandUnsignedShort(int operand_index);
@@ -243,6 +253,8 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   compiler::Node* BytecodeOperandUnsignedQuad(int operand_index);
   compiler::Node* BytecodeOperandSignedQuad(int operand_index);
 
+  // Returns zero- or sign-extended to word32 value of the operand of
+  // given size.
   compiler::Node* BytecodeSignedOperand(int operand_index,
                                         OperandSize operand_size);
   compiler::Node* BytecodeUnsignedOperand(int operand_index,