Max Kazantsev ccf788a565 [IRCE] Drop SCEV of a Phi after adding a new input. PR57335 ...

Since SCEV learned to look through single value phis with
20d798bd47ec5191de1b2a8a031da06a04e612e1, whenever we add
a new input to a Phi, we should make sure that the old cached
value is dropped. Otherwise, it may lead to various miscompiles,
such as breach of dominance as shown in the bug
https://github.com/llvm/llvm-project/issues/57335

2022-08-25 18:14:29 +07:00

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add-metadata-pre-post-loops.ll

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bad_expander.ll

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bad-loop-structure.ll

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bug-loop-varying-upper-limit.ll

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bug-mismatched-types.ll

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clamp.ll

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conjunctive-checks.ll

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correct-loop-info.ll

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decrementing-loop.ll

[SCEV] Fix isImpliedViaMerge() with values from previous iteration (PR56242)

2022-07-05 15:31:23 +02:00

empty_ranges.ll

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eq_ne.ll

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low-becount.ll

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low-iterations.ll

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multiple-access-no-preloop.ll

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non_known_positive_end.ll

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non-loop-invariant-rhs-instr.ll

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not-likely-taken.ll

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only-lower-check.ll

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only-upper-check.ll

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optimistic_scev.ll

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pr48051.ll

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pr57335.ll

[IRCE] Drop SCEV of a Phi after adding a new input. PR57335

2022-08-25 18:14:29 +07:00

pre_post_loops.ll

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range_intersect_miscompile.ll

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ranges_of_different_types.ll

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rc-negative-bound.ll

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single-access-no-preloop.ll

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single-access-with-preloop.ll

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skip-profitability-checks.ll

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stride_more_than_1.ll

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unhandled.ll

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unsigned_comparisons_ugt.ll

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unsigned_comparisons_ult.ll

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variable-loop-bounds.ll

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wide_indvar.ll

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with-parent-loops.ll

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