Eliminate some DebugStep calls in async code

Eliminate some DebugStep calls in async code

There is no reason to check debugger stepping when assigning
to internal helper variables.

Committed: https://code.google.com/p/dart/source/detail?r=44577

[hausner, 2015-03-18 22:06:16]

hausner@google.com changed reviewers:
+ srdjan@google.com

[srdjan, 2015-03-18 23:26:27]

LGTMwC

https://codereview.chromium.org/1019683002/diff/1/runtime/vm/flow_graph_build...
File runtime/vm/flow_graph_builder.cc (right):

https://codereview.chromium.org/1019683002/diff/1/runtime/vm/flow_graph_build...
runtime/vm/flow_graph_builder.cc:3446: (node->token_pos() !=
Scanner::kNoSourcePos)) {
How about factoring this out into LocalVariable::IsInternal ?

[hausner, 2015-03-18 23:59:21]

Thank you.

https://codereview.chromium.org/1019683002/diff/1/runtime/vm/flow_graph_build...
File runtime/vm/flow_graph_builder.cc (right):

https://codereview.chromium.org/1019683002/diff/1/runtime/vm/flow_graph_build...
runtime/vm/flow_graph_builder.cc:3446: (node->token_pos() !=
Scanner::kNoSourcePos)) {
On 2015/03/18 23:26:27, srdjan wrote:
> How about factoring this out into LocalVariable::IsInternal ?

Done.

[hausner, 2015-03-19 16:54:50]

Committed patchset #2 (id:20001) manually as r44577 (presubmit successful).