Add a parameter to return continuations

Add a parameter to return continuations

Every return continuation has exactly one parameter. It will be used
during constant propagation to unify handling of constant continuation
parameters.

BUG=
R=kmillikin@google.com

Committed: https://code.google.com/p/dart/source/detail?r=39026

[Kevin Millikin (Google), 2014-08-08 08:44:53]

lgtm

https://codereview.chromium.org/442363002/diff/1/sdk/lib/_internal/compiler/i...
File sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_nodes.dart (right):

https://codereview.chromium.org/442363002/diff/1/sdk/lib/_internal/compiler/i...
sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_nodes.dart:509:
Continuation.retrn() : parameters = new List<Parameter>(1) {
= <Parameter>[new Parameter(null)] {}

[jgruber1, 2014-08-08 09:04:03]

https://codereview.chromium.org/442363002/diff/1/sdk/lib/_internal/compiler/i...
File sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_nodes.dart (right):

https://codereview.chromium.org/442363002/diff/1/sdk/lib/_internal/compiler/i...
sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_nodes.dart:509:
Continuation.retrn() : parameters = new List<Parameter>(1) {
On 2014/08/08 08:44:53, kmillikin wrote:
> = <Parameter>[new Parameter(null)] {}

Done.

[jgruber1, 2014-08-08 09:05:05]

Committed patchset #2 manually as 39026 (presubmit successful).