llvm-project.git/llvm/test/Transforms/LoopVectorize/pr34681.ll, branch users/mingmingl-llvm/samplefdo-profile-format

Reapply "[SCEVExp] Add helper to clean up dead instructions after expansion. (#157308)"

2025-09-09T08:47:41+00:00

This reverts commit eeb43806eb1b40e690aeeba496ee974172202df9.

Recommit with with a fix for MSan failure (
https://lab.llvm.org/buildbot/#/builders/169/builds/14799), by adding a
set to track deleted values. Using the InsertedInstructions set is not
sufficient, as it use asserting value handles as keys, which may
dereference the value at construction.

Original message:

Add new helper to erase dead instructions inserted during SCEV expansion
but not being used due to InstSimplifyFolder simplifications.

Together with https://github.com/llvm/llvm-project/pull/157307 this also
allows removing some specialized folds, e.g.
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp#L2205

PR: https://github.com/llvm/llvm-project/pull/157308

Revert "[SCEVExp] Add helper to clean up dead instructions after expansion. (#157308)"

2025-09-08T13:52:28+00:00

This reverts commit 528b13df571c86a2c5b8305d7974f135d785e30f.

Triggers MSan errors in some configurations, e.g.
https://lab.llvm.org/buildbot/#/builders/169/builds/14799

[SCEVExp] Add helper to clean up dead instructions after expansion. (#157308)

2025-09-08T09:53:20+00:00

Add new helper to erase dead instructions inserted during SCEV expansion
but not being used due to InstSimplifyFolder simplifications.

Together with https://github.com/llvm/llvm-project/pull/157307 this also
allows removing some specialized folds, e.g.
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Transforms/Utils/ScalarEvolutionExpander.cpp#L2205

PR: https://github.com/llvm/llvm-project/pull/157308

[LV] Modernize and regenerate checks for some tests.

2025-09-06T19:52:29+00:00

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

2022-12-14T14:16:59+00:00

[test][NewPM] Use -passes=loop-vectorize instead of -loop-vectorize

2022-04-28T14:46:00+00:00

Update a bunch of loop-vectorize regression tests to use the new PM
syntax (opt -passes=loop-vectorize) instead of the deprecated legacy
PM syntax (opt -loop-vectorize).

[IRBuilder] Migrate select-folding to value-based FoldSelect.

2022-01-15T11:26:44+00:00

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D117228

[LV] Extend check lines for pr34681.ll to cover foldable select.

2022-01-13T16:42:47+00:00

[test, LoopVectorize] Fix use of var defined in CHECK-NOT

2021-04-09T09:01:57+00:00

LLVM test Transforms/LoopVectorize/pr34681.ll tries to check for the
absence of a sequence of instructions with several CHECK-NOT with one of
those directives using a variable defined in another. However CHECK-NOT
are checked independently so that is using a variable defined in a
pattern that should not occur in the input.

This commit only checks for the absence of icmp ne 1 which rules out the
presence of the whole sequence and does not involve an undefined
variable.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D99582

Revert "Temporarily Revert "Add basic loop fusion pass.""

2019-04-17T04:52:47+00:00

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552