cfallin opened PR #5808 from disable-gvn-of-effectful-ops
to main
:
This is a short-term fix to the same bug that #5800 is addressing (#5796), but with less risk: it simply turns off GVN'ing of effectful but idempotent ops. Because we have an upcoming release, and this is a miscompile (albeit to do with trapping behavior), we would like to make the simplest possible fix that avoids the bug, and backport it. I will then rebase #5800 on top of a revert of this followed by the more complete fix.
This deletes the test that ensures that multiple dynamically-checked heap accesses are GVN'd, because removing this functionality in fact makes that no longer the case. It will come back with the revert and proper fix!
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cfallin requested fitzgen for a review on PR #5808.
cfallin requested elliottt for a review on PR #5808.
cfallin requested jameysharp for a review on PR #5808.
jameysharp submitted PR review.
elliottt submitted PR review.
cfallin has enabled auto merge for PR #5808.
cfallin merged PR #5808.
Last updated: Dec 23 2024 at 12:05 UTC