Write barriers should not be eliminated for a StoreInstanceField
if there is a Dart call between store and object allocation.
This is implemented using Instruction::CanCallDart()
predicate, which is overridden for TemplateDartCall.
However, LoadField instructions for late fields with initializers can
also call initializer function directly without entering runtime.
This change introduces LoadFieldInstr::CanCallDart() to avoid
incorrect write barrier elimination across such LoadField instructions.
TEST=vm/cc/IRTest_WriteBarrierElimination_LoadLateField
Bug: b/204355807
Change-Id: Ibd9fe61e9723f1f4ecc9e4f5cedc3024d9d03c75
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/218583
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Alexander Markov
6c9a830fda