llvm-project.git/llvm/test/Transforms/LoopVectorize/outer_loop_test1.ll, branch users/nico/python-2

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

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

[VPlan] Preserve DT (and SCEV) in VPlan-native path (#93287)

2024-05-28T00:03:53+00:00

As a follow-up to b2f65e80, use the DTU to also update and preserve
the DT in the native path. This should also allow preserving SCEV in the
native path

PR: https://github.com/llvm/llvm-project/pull/93287

[VPlan] Mark LoopInfo preserved in native-path as well (NFC).

2024-05-17T11:18:01+00:00

LoopInfo is updated during VPlan execution now, so it will also be
updated correctly in the native path.

[IRBuilder] Use canonical i64 type for insertelement index used by vector splats.

2023-01-11T14:08:06+00:00

Instcombine prefers this canonical form (see getPreferredVectorIndex),
as does IRBuilder when passing the index as an integer so we may as
well use the prefered form from creation.

NOTE: All test changes are mechanical with nothing else expected
beyond a change of index type from i32 to i64.

Differential Revision: https://reviews.llvm.org/D140983

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

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

[NFC] Port all runlines for LoopVectorize pass tests to -passes syntax

2022-12-05T19:17:30+00:00

[LV] Mark increment of main vector loop induction variable as NUW.

2021-06-07T09:47:52+00:00

This patch marks the induction increment of the main induction variable
of the vector loop as NUW when not folding the tail.

If the tail is not folded, we know that End - Start >= Step (either
statically or through the minimum iteration checks). We also know that both
Start % Step == 0 and End % Step == 0. We exit the vector loop if %IV +
%Step == %End. Hence we must exit the loop before %IV + %Step unsigned
overflows and we can mark the induction increment as NUW.

This should make SCEV return more precise bounds for the created vector
loops, used by later optimizations, like late unrolling.

At the moment quite a few tests still need to be updated, but before
doing so I'd like to get initial feedback to make sure I am not missing
anything.

Note that this could probably be further improved by using information
from the original IV.

Attempt of modeling of the assumption in Alive2:
https://alive2.llvm.org/ce/z/H_DL_g

Part of a set of fixes required for PR50412.

Reviewed By: mkazantsev

Differential Revision: https://reviews.llvm.org/D103255

[VPlan] Manage pairs of incoming (VPValue, VPBB) in VPWidenPHIRecipe.

2021-02-22T09:44:25+00:00

This patch extends VPWidenPHIRecipe to manage pairs of incoming
(VPValue, VPBasicBlock) in the VPlan native path. This is made possible
because we now directly manage defined VPValues for recipes.

By keeping both the incoming value and block in the recipe directly,
code-generation in the VPlan native path becomes independent of the
predecessor ordering when fixing up non-induction phis, which currently
can cause crashes in the VPlan native path.

This fixes PR45958.

Reviewed By: sguggill

Differential Revision: https://reviews.llvm.org/D96773

[IR] Let IRBuilder's CreateVectorSplat/CreateShuffleVector use poison as placeholder

2020-12-29T19:21:04+00:00

This patch updates IRBuilder to create insertelement/shufflevector using poison as a placeholder.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D93793

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