Improved printing of jump tables.

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 312 matching lines @@
   }
 
   __ RecordComment("[ Deoptimisation jump table");
   Label table_start;
   __ bind(&table_start);
   Label needs_frame_not_call;
   Label needs_frame_is_call;
   for (int i = 0; i < deopt_jump_table_.length(); i++) {
     __ bind(&deopt_jump_table_[i].label);
     Address entry = deopt_jump_table_[i].address;
+    bool is_lazy_deopt = deopt_jump_table_[i].is_lazy_deopt;
+    Deoptimizer::BailoutType type =
+        is_lazy_deopt ? Deoptimizer::LAZY : Deoptimizer::EAGER;
+    int id = Deoptimizer::GetDeoptimizationId(entry, type);
+    if (id == Deoptimizer::kNotDeoptimizationEntry) {
+      Comment(";;; jump table entry %d.", i);
+    } else {
+      Comment(";;; jump table entry %d: deoptimization bailout %d.", i, id);
+    }
     if (deopt_jump_table_[i].needs_frame) {
       __ mov(ip, Operand(ExternalReference::ForDeoptEntry(entry)));
-      if (deopt_jump_table_[i].is_lazy_deopt) {
+      if (is_lazy_deopt) {
         if (needs_frame_is_call.is_bound()) {
           __ b(&needs_frame_is_call);
         } else {
           __ bind(&needs_frame_is_call);
           __ stm(db_w, sp, cp.bit() | fp.bit() | lr.bit());
           // This variant of deopt can only be used with stubs. Since we don't
           // have a function pointer to install in the stack frame that we're
           // building, install a special marker there instead.
           ASSERT(info()->IsStub());
           __ mov(scratch0(), Operand(Smi::FromInt(StackFrame::STUB)));
@@ skipping 12 matching lines @@
           // have a function pointer to install in the stack frame that we're
           // building, install a special marker there instead.
           ASSERT(info()->IsStub());
           __ mov(scratch0(), Operand(Smi::FromInt(StackFrame::STUB)));
           __ push(scratch0());
           __ add(fp, sp, Operand(2 * kPointerSize));
           __ mov(pc, ip);
         }
       }
     } else {
-      if (deopt_jump_table_[i].is_lazy_deopt) {
+      if (is_lazy_deopt) {
         __ mov(lr, Operand(pc), LeaveCC, al);
         __ mov(pc, Operand(ExternalReference::ForDeoptEntry(entry)));
       } else {
         __ mov(pc, Operand(ExternalReference::ForDeoptEntry(entry)));
       }
     }
     masm()->CheckConstPool(false, false);
   }
   __ RecordComment("]");
 
@@ skipping 5721 matching lines @@
   __ sub(scratch, result, Operand(index, LSL, kPointerSizeLog2 - kSmiTagSize));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal