tests/compiler/dart2js/cps_ir/input/redundant_condition.dart - Issue 2246623002: Delete CPS IR

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Side by Side Diff: tests/compiler/dart2js/cps_ir/input/redundant_condition.dart

Issue 2246623002: Delete CPS IR (Closed) Base URL: git@github.com:dart-lang/sdk.git@master

Patch Set: Created 4 years, 4 months ago

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1 // This test illustrates an opportunity to remove redundant code by

2 // propagating inforamtion after inlining.

3 //

4 // The code below inlines `foo` twice, but we don't propagate that we already

5 // know from the first `foo` that `a` is an int, so the second check can be

6 // removed entirely.

7

8 import 'package:expect/expect.dart';

9

10 main() {

11 var a = nextNumber();

12 action(foo(a));

13 action(foo(a));

14 }

15

16 foo(x) {

17 if (x is! int) throw "error 1";

18 return x + 5 % 100;

19 }

20

21 @NoInline() @AssumeDynamic()

22 nextNumber() => int.parse('33');

23

24 @NoInline()

25 action(v) => print(v);

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