llvm-project.git/llvm/test/Transforms/LoopVectorize/pr37248.ll, branch users/nico/python-2

[VPlan] Remove no-op SCALAR-STEPS after unrolling. (#123655)

2025-03-25T12:57:24+00:00

After unrolling, there may be additional simplifications that can be
applied. One example is removing SCALAR-STEPS for the first part where
only the first lane is demanded.

This removes redundant adds of 0 from a large number of tests (~200),
many which I am still working on updating.

In preparation for removing redundant WideIV steps added in
https://github.com/llvm/llvm-project/pull/119284.

PR: https://github.com/llvm/llvm-project/pull/123655

[VPlan] Also introduce broadcasts for live-ins used in vec preheader.

2025-03-11T21:19:14+00:00

Slightly generalize materializeLiveInBroadcasts to also introduce
broadcasts for live-ins used in the vector preheader. This should cover
all live-ins.

If the live-in is used in the vector preheader, insert the broadcast at
the beginning of the block.

[VPlan] Add incoming values for all predecessor to ResumePHI (NFCI).

2025-02-09T11:20:20+00:00

Follow-up as discussed when using VPInstruction::ResumePhi for all resume
values (#112147). This patch explicitly adds incoming values for each
predecessor in VPlan. This simplifies codegen and allows transformations
adjusting the predecessors of blocks with

NFC modulo incoming block order in phis.

[VPlan] Handle some VPInstructions in may{Read,Write}FromMemory (#120058)

2025-01-08T07:17:26+00:00

This just copies the same conservative definition from mayWriteToMemory,
and enables more VPInstructions to be hoisted out in LICM.

I think this should give more accurate costs, and I was able to build
llvm-test-suite without the legacy-vplan cost model assertion going off.

[VPlan] Remove reverse() of predecessors from VPInstruction::generate.

2024-12-17T20:44:32+00:00

This was originally done to reduce the diff for the change. Remove it
and update the remaining tests. NFC modulo reordering of incoming
values.

Clean up after https://github.com/llvm/llvm-project/pull/114292.

[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)

2024-11-06T11:53:33+00:00

[VPlan] Mark some VPInstruction opcodes as not having side effects.

2023-08-22T19:05:57+00:00

Mark some VPInstruction opcodes as not having side effects, preparation
for D157037.

[LV] Add variant of test without dead load.

2023-08-05T13:15:18+00:00

The original test has a unused load, which is removed. Also add a
variant with a store that cannot be removed, forcing the mask for the
block to always be generated.

[LV] Remove UB caused by undef from pr37248.ll (NFC).

2023-06-08T10:58:58+00:00

Also generate full check lines.

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

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