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

[VPlan] Also duplicated scalar-steps when it enables sinking scalars. (#136021)

2025-04-21T17:36:43+00:00

Extend sinking logic to duplicate scalar steps recipe if it enables
sinking, that is if all users in a destination block require all lanes.

This should be the last step before removing legacy sinkScalarOperands.

PR: https://github.com/llvm/llvm-project/pull/136021

[VPlan] Generalize SCALAR-STEPS removal to any unroll factor.

2025-03-26T21:03:50+00:00

Follow-up to dfca6c0d3bf9d1a056 to extend isUnrolled handle any unrolled
VPlan, which means there's a single UF, but it will be > 1 if unrolling
took place.

[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] 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] 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.

Reapply "[VPlan] Update scalar induction resume values in VPlan. (#110577)"

2024-12-06T19:41:51+00:00

This reverts commit f09b16e2671cbcdf7cb7dc7ed705db092a9deda1.

The crash when building llvm-test-suite with stage2 should have been
fixed by 1091fad31a83d5ab87eb6fa11fe3bdb3f0d152ea.

Revert "[VPlan] Update scalar induction resume values in VPlan. (#110577)"

2024-12-06T17:01:42+00:00

This reverts commit 0678e2058364ec10b94560d27ec7138dfa003287.
This reverts commit 1091fad31a83d5ab87eb6fa11fe3bdb3f0d152ea.

Causes crashes in llvm-test-suite when using stage 2 clang.

[VPlan] Update scalar induction resume values in VPlan. (#110577)

2024-12-06T12:26:19+00:00

Updated ILV.createInductionResumeValues (now createInductionResumeVPValue)
to directly update the VPIRInstructions wrapping the original phis with the 
created resume values.

This is the first step towards modeling them completely in VPlan.
Subsequent patches will move creation of the resume values completely
into VPlan.

Depends on https://github.com/llvm/llvm-project/pull/109975.

PR: https://github.com/llvm/llvm-project/pull/110577

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

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

[VPlan] Run DCE after unrolling.

2024-09-22T21:08:46+00:00

This cleans up a number of dead recipes after unrolling if only their
first or last parts are used. This simplifies a number of tests.

Fixes https://github.com/llvm/llvm-project/issues/109581.