commit | 707cd928af0ae534bc3a39ec606743309e265c9d | [log] [tgz] |
---|---|---|
author | Alexander Markov <alexmarkov@google.com> | Tue Apr 06 21:11:23 2021 +0000 |
committer | commit-bot@chromium.org <commit-bot@chromium.org> | Tue Apr 06 21:11:23 2021 +0000 |
tree | 5d9a80b46361258d6d5f1da14e60dc05e444bbd9 | |
parent | 1bf4b0ce2f1904a13c604fdd9d824f18d4373ce8 [diff] |
[vm/ffi] Fix representation of value for 8-bit and 16-bit FFI loads and stores Previously, FFI store could use kUnboxedUint32 for value being stored via 8-bit or 16-bit StoreIndexed instruction. However, such StoreIndexed instructions require kUnboxedIntPtr representation. Due to the mismatch in the representations, SelectRepresentations pass inserts a speculative (deoptimizing) IntConverter instruction, which cases crash in AOT mode. Similar problem exists for FFI loads. This change corrects representation when unboxing value in the body of FFI store intrinsics and when boxing the value in FFI loads, so representation of the value matches representation required by StoreIndexed / returned by LoadIndexed. TEST=ffi/regress_flutter79441_test Fixes https://github.com/flutter/flutter/issues/79441 Change-Id: Ida144e8d2e7a69d6767c9d4447bb20e79d847d48 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/193824 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
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