[Interpreter] Add for/while/do support to the bytecode generator.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 4f9773cf7ce427947af6c23877ba4d72078dde6d..51b8283fd9329e8e8a8f2c0cd3bd23c686c5db3c 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -12506,6 +12506,20 @@ void BytecodeArray::Disassemble(std::ostream& os) {
     SNPrintF(buf, "%p", bytecode_start);
     os << buf.start() << " : ";
     interpreter::Bytecodes::Decode(os, bytecode_start, parameter_count());
+    if (bytecode == interpreter::Bytecode::kJump ||
+        bytecode == interpreter::Bytecode::kJumpIfTrue ||
+        bytecode == interpreter::Bytecode::kJumpIfFalse) {

[rmcilroy, 2015/10/01 09:18:56]

nit - could we make a helper for IsJump, IsJumpConstant.

[oth, 2015/10/01 11:43:02]

Done.

+      int offset = static_cast<int8_t>(bytecode_start[1]);
+      SNPrintF(buf, " (%p)", bytecode_start + offset);
+      os << buf.start();
+    } else if (bytecode == interpreter::Bytecode::kJumpConstant ||
+               bytecode == interpreter::Bytecode::kJumpIfTrueConstant ||
+               bytecode == interpreter::Bytecode::kJumpIfFalseConstant) {
+      int index = static_cast<int>(bytecode_start[1]);
+      int offset = Smi::cast(constant_pool()->get(index))->value();
+      SNPrintF(buf, " (%p)", bytecode_start + offset);
+      os << buf.start();
+    }
     os << "\n";
   }