llvm-project.git/llvm/test/Transforms/LoopSimplifyCFG, branch users/nico/python-2

[LoopSimplifyCFG] Fix SCEV invalidation after removing dead exit (#127536)

2025-02-21T11:26:39+00:00

Fixes #127534

[llvm] Remove `br i1 undef` from some regression tests [NFC] (#117112)

2024-11-21T08:06:56+00:00

This PR removes tests with `br i1 undef` under
`llvm/tests/Transforms/Loop*, Lower*`.

[llvm-project] Fix typo "propogate" (#114795)

2024-11-04T15:33:19+00:00

[LoopSimplifyCFG] Convert test to opaque pointers (NFC)

2023-01-05T13:05:39+00:00

[Transforms] Convert some tests to opaque pointers (NFC)

2023-01-05T11:43:45+00:00

These are all tests where conversion worked automatically, and
required no manual fixup.

[NFC] Port all LoopSimplifyCFG tests to `-passes=` syntax

2022-12-07T23:38:47+00:00

[LoopSimplifyCFG] Forget loop and block dispos after merging blocks.

2022-10-20T10:23:29+00:00

This fixes another case where block and loop dispositions weren't
properly invalidate after changing the CFG.

Fixes #58489.

[LoopSimplifyCFG] Clear SCEV dispositions when removing dead blocks.

2022-10-10T17:08:35+00:00

When removing loops & blocks we also need to clear the SCEV dispositions
as they may now contain incorrect values.

Fixes #58262.

[LoopSimplifyCFG] Invalidate SCEV dispositions.

2022-10-07T20:35:42+00:00

Clear all dispositions if there are any dead blocks (which will get
removed later) and also clear dispositions for removed instructions.

Clearing all dispositions in case there are dead blocks happens first,
which should avoid traversing SCEV use-lists for invalidating
dispositions for individual values.

Fixes #58179.

[LoopSimplifyCFG] Prevent use-def dominance breach by handling dead exits. PR56243

2022-07-19T08:54:12+00:00

One of the transforms in LoopSimplifyCFG demands that the LCSSA form is
truly maintained for all values, tokens included, otherwise it may end up creating
a use that is not dominated by def (and Phi creation for tokens is impossible).
Detect this situation and prevent transform for it early.

Differential Revision: https://reviews.llvm.org/D129984
Reviewed By: efriedma