[turbofan] Remove IfExceptionHint from exception projections.

src/compiler/code-generator.cc

Index: src/compiler/code-generator.cc
diff --git a/src/compiler/code-generator.cc b/src/compiler/code-generator.cc
index 6f03d1361294d2f98a75363195c1058192472745..59d5136cc37edd4bbbc88c428e3bfd201ea12b4f 100644
--- a/src/compiler/code-generator.cc
+++ b/src/compiler/code-generator.cc
@@ -229,9 +229,9 @@ Handle<Code> CodeGenerator::GenerateCode() {
             TENURED));
     for (size_t i = 0; i < handlers_.size(); ++i) {
       int position = handlers_[i].handler->pos();
+      HandlerTable::CatchPrediction prediction = HandlerTable::UNCAUGHT;
       table->SetReturnOffset(static_cast<int>(i), handlers_[i].pc_offset);
-      table->SetReturnHandler(static_cast<int>(i), position,
-                              handlers_[i].catch_prediction);
+      table->SetReturnHandler(static_cast<int>(i), position, prediction);

[Yang, 2016/08/02 13:20:40]

Do we still want to have this prediction field when we create the handler table
for turbofan?

[Michael Starzinger, 2016/08/02 13:22:49]

Acknowledged. I agree, we should remove the prediction from the return-address
based handler table API. I wanted to do that in a follow-up CL in order to keep
this one a compiler-only change.

     }
     result->set_handler_table(*table);
   }
@@ -603,15 +603,8 @@ void CodeGenerator::RecordCallPosition(Instruction* instr) {
 
   if (flags & CallDescriptor::kHasExceptionHandler) {
     InstructionOperandConverter i(this, instr);
-    HandlerTable::CatchPrediction prediction = HandlerTable::UNCAUGHT;
-    if (flags & CallDescriptor::kHasLocalCatchHandler) {
-      prediction = HandlerTable::CAUGHT;
-    } else if (flags & CallDescriptor::kHasLocalCatchHandlerForPromiseReject) {
-      prediction = HandlerTable::PROMISE;
-    }
     RpoNumber handler_rpo = i.InputRpo(instr->InputCount() - 1);
-    handlers_.push_back(
-        {prediction, GetLabel(handler_rpo), masm()->pc_offset()});
+    handlers_.push_back({GetLabel(handler_rpo), masm()->pc_offset()});
   }
 
   if (needs_frame_state) {