f3d8167443
IfThenElse instruction expects a simple Smi comparison and it doesn't support null-aware int? comparison (although it uses the same kTagged representation). TEST=runtime/tests/vm/dart/regress_b378737064_test.dart Fixes b/378737064 Change-Id: Iaf9243ff5505b986bbfe4510834972e75869dc61 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/394570 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>