Index: sdk/lib/_internal/compiler/implementation/ssa/variable_allocator.dart |
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/variable_allocator.dart b/sdk/lib/_internal/compiler/implementation/ssa/variable_allocator.dart |
index c1243d23a85b64df4ea6fff4862b7093dac2641c..e139f242388b05667626bc9a56a117b36bf81640 100644 |
--- a/sdk/lib/_internal/compiler/implementation/ssa/variable_allocator.dart |
+++ b/sdk/lib/_internal/compiler/implementation/ssa/variable_allocator.dart |
@@ -299,7 +299,8 @@ class SsaLiveIntervalBuilder extends HBaseVisitor { |
int lastId = env.loopMarkers[header]; |
// Update all instructions that are liveIns in [header] to have a |
// range that covers the loop. |
- env.liveInstructions.forEach((HInstruction instruction, int id) { |
+ new Map.from(env.liveInstructions).forEach((HInstruction instruction, |
+ int id) { |
LiveInterval range = env.liveIntervals.putIfAbsent( |
instruction, () => new LiveInterval()); |
range.loopUpdate(env.startId, lastId); |