[wasm] Implement {Compile,Runtime}Error; fix traps from start function

src/wasm/wasm-result.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/wasm/wasm-result.h"
 
 #include "src/factory.h"
 #include "src/heap/heap.h"
 #include "src/isolate-inl.h"
 #include "src/objects.h"
@@ skipping 28 matching lines @@
   if (context_ != nullptr) {
     str << context_ << ": ";
   }
   str << buffer;
 
   i::Handle<i::String> message =
       isolate_->factory()->NewStringFromAsciiChecked(str.str().c_str());
   exception_ = isolate_->factory()->NewError(constructor, message);
 }
 
-void ErrorThrower::Error(const char* format, ...) {
-  if (error()) return;
-  va_list arguments;
-  va_start(arguments, format);
-  Format(isolate_->error_function(), format, arguments);
-  va_end(arguments);
-}
-
 void ErrorThrower::TypeError(const char* format, ...) {
   if (error()) return;
   va_list arguments;
   va_start(arguments, format);
   Format(isolate_->type_error_function(), format, arguments);
   va_end(arguments);
 }
 
 void ErrorThrower::RangeError(const char* format, ...) {
   if (error()) return;
   va_list arguments;
   va_start(arguments, format);
-  CHECK(*isolate_->range_error_function() != *isolate_->type_error_function());
   Format(isolate_->range_error_function(), format, arguments);
   va_end(arguments);
 }
 
+void ErrorThrower::CompileError(const char* format, ...) {
+  if (error()) return;
+  va_list arguments;
+  va_start(arguments, format);
+  Format(isolate_->wasm_compile_error_function(), format, arguments);
+  va_end(arguments);
+}
+
+void ErrorThrower::RuntimeError(const char* format, ...) {
+  if (error()) return;
+  va_list arguments;
+  va_start(arguments, format);
+  Format(isolate_->wasm_runtime_error_function(), format, arguments);
+  va_end(arguments);
+}
+
 ErrorThrower::~ErrorThrower() {
   if (error() && !isolate_->has_pending_exception()) {
     isolate_->ScheduleThrow(*exception_);
   }
 }
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8