[ignition] Use absolute values for jump offsets

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 5183f3efedfb4673bbfddec625873cb5f2bd7f33..76da4816b058869a709bc5c7ead96c7ee70b08ed 100644
--- a/src/interpreter/interpreter-assembler.h
+++ b/src/interpreter/interpreter-assembler.h
@@ -39,6 +39,9 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   // Returns the 32-bit unsigned immediate for bytecode operand |operand_index|
   // in the current bytecode.
   compiler::Node* BytecodeOperandUImm(int operand_index);
+  // Returns the word-size unsigned immediate for bytecode operand
+  // |operand_index| in the current bytecode.
+  compiler::Node* BytecodeOperandUImmWord(int operand_index);
   // Returns the 32-bit signed immediate for bytecode operand |operand_index|
   // in the current bytecode.
   compiler::Node* BytecodeOperandImm(int operand_index);
@@ -150,7 +153,7 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
                                compiler::Node* arg_count, int return_size = 1);
 
   // Jump relative to the current bytecode by |jump_offset|.
-  compiler::Node* Jump(compiler::Node* jump_offset);
+  compiler::Node* Jump(compiler::Node* jump_offset, bool reverse = false);
 
   // Jump relative to the current bytecode by |jump_offset| if the
   // word values |lhs| and |rhs| are equal.
@@ -272,7 +275,7 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   // Updates and returns BytecodeOffset() advanced by delta bytecodes.
   // Traces the exit of the current bytecode.
   compiler::Node* Advance(int delta);
-  compiler::Node* Advance(compiler::Node* delta);
+  compiler::Node* Advance(compiler::Node* delta, bool reverse = false);
 
   // Load the bytecode at |bytecode_offset|.
   compiler::Node* LoadBytecode(compiler::Node* bytecode_offset);