Revert #119627 "Remove all ConstPropNonsense" #120347
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Some changes occurred to MIR optimizations cc @rust-lang/wg-mir-opt Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri Some changes occurred in src/tools/clippy cc @rust-lang/clippy |
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It would be nice to also add a test to make sure this does not regress again :) |
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Can do! |
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I'd prefer to just add a line to avoid this ICE instead of reverting the entire PR. I can do that tomorrow. If you want to do it now, it should be as simple as getting a backtrace and checking the call site to the entry point to the interpreter. I did a similar thing here: https://github.com/rust-lang/rust/pull/119627/files#r1452800719 |
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I can put up that PR @oli-obk |
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Less invasive fix in #120350 |
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Sorry got pulled away by meetings. @compiler-errors let's land your change. I'm closing this PR for now, I can reopen if we need. |
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Reopening since it looks like the other PR hit a snag. I'll add the regression tests requested. |
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r? oli-obk I assume that you'll have the same difficulty in creating a faithful regression test as #120350 does? In any case, I want to leave this up to oli to decide whether to do a full revert. |
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Could you please put the title of the reverted PR into the title of this one? Just "revert <number>" is not a very helpful summary.
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This reverts commit 68411c9, reversing changes made to 7ffc697. This commit was checked in as PR rust-lang#119627.
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Updated the PR and commit title. The previous title was the default generated by As @compiler-errors suggested, I'm going to leave this as a clean revert due to the difficulty of adding a regression test. If we had that figured out then we would just check in the fix PR. I'll leave it up to the reviewer whether a revert is sufficient. @rustbot ready |
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Please change this to only revert 1f398ab (as per the discussion in the other PR, we'll follow up with just removing the assertion) r=me with that |
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Ah #120367 removes the assertion, let's go with that |
This reverts commit 68411c9, reversing changes made to 7ffc697.
Original PR: #119627
Fixes: #120337
cc @oli-obk, @matthiaskrgr (maybe you want to review this?)