[6.0.0] egraphs: disable GVN of effectful idempotent ops (temporarily).#5809
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cfallin merged 1 commit intobytecodealliance:release-6.0.0from Feb 16, 2023
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This is a short-term fix to the same bug that bytecodealliance#5800 is addressing (bytecodealliance#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 bytecodealliance#5800 on top of a revert of this followed by the more complete fix.
jameysharp
approved these changes
Feb 16, 2023
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(This is a cherry-pick of #5808's commit.)
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.