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Ryotaro Kasuga 1e5f7f64b0 [LoopInterchange] Handle confused dependence correctly (#140709) 
This patch fixes the handling of a confused `Dependence` object. Such an
object doesn’t contain any information about dependencies, so we must
process it conservatively. However, it was converted into a direction
vector like `[I I ... I]`. As a result, it was treated as if there are
no loop-carried dependencies, which can lead to illegal loop exchanges.

Fixes #140238
2025-06-05 16:44:02 +09:00
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bail-out-one-loop.ll
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call-instructions-remarks.ll
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call-instructions.ll
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confused-dependence.ll
[LoopInterchange] Handle confused dependence correctly (#140709)
2025-06-05 16:44:02 +09:00
currentLimitation.ll
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debuginfo.ll
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deep-loop-nest.ll
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gh54176-scalar-deps.ll
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inner-indvar-depend-on-outer-indvar-remark.ll
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inner-indvar-depend-on-outer-indvar.ll
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inner-only-reductions.ll
[LoopInterchange] Relax the legality check to accept more patterns (#139690)
2025-05-13 21:14:14 +09:00
innermost-latch-uses-values-in-middle-header.ll
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interchange-flow-dep-outer.ll
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interchange-insts-between-indvar.ll
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interchange-no-deps.ll
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interchangeable-innerloop-multiple-indvars.ll
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interchangeable-outerloop-multiple-indvars.ll
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interchangeable.ll
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interchanged-loop-nest-3.ll
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interchanged-loop-nest-4.ll
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lcssa-preheader.ll
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lcssa.ll
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legality-check.ll
[LoopInterchange] Relax the legality check to accept more patterns (#139690)
2025-05-13 21:14:14 +09:00
legality-for-scalar-deps.ll
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loop-interchange-optimization-remarks.ll
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many-load-stores.ll
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multilevel-partial-reduction.ll
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no-dependence-info.ll
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not-interchanged-dependencies-1.ll
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not-interchanged-loop-nest-3.ll
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not-interchanged-tightly-nested.ll
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outer-dependency-lte.ll
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outer-header-jump-to-inner-latch.ll
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outer-only-reductions.ll
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perserve-lcssa.ll
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phi-ordering.ll
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pr43176-move-to-new-latch.ll
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pr43326-ideal-access-pattern.ll
[LoopInterchange] Handle confused dependence correctly (#140709)
2025-06-05 16:44:02 +09:00
pr43326.ll
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pr43473-invalid-lcssa-phis-in-inner-exit.ll
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pr43797-lcssa-for-multiple-outer-loop-blocks.ll
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pr45743-move-from-inner-preheader.ll
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pr48212.ll
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pr56275.ll
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pr57148.ll
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profitability-redundant-interchange.ll
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profitability-vectorization-heuristic.ll
[LoopInterchange] Fix the vectorizable check for a loop (#133667)
2025-04-03 16:21:19 +09:00
profitability-vectorization.ll
[LoopInterchange] Add an option to control the cost heuristics applied (#133664)
2025-04-02 15:41:40 +09:00
profitability.ll
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reductions-across-inner-and-outer-loop.ll
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unique-dep-matrix.ll
[LoopInterchange] Handle confused dependence correctly (#140709)
2025-06-05 16:44:02 +09:00
update-condbranch-duplicate-successors.ll
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vector-gep-operand.ll
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