12 Commits

Author SHA1 Message Date
Florian Hahn
7f3428d3ed
[VPlan] Compute induction end values in VPlan. (#112145)
Use createDerivedIV to compute IV end values directly in VPlan, instead
of creating them up-front.

This allows updating IV users outside the loop as follow-up.

Depends on https://github.com/llvm/llvm-project/pull/110004 and
https://github.com/llvm/llvm-project/pull/109975.

PR: https://github.com/llvm/llvm-project/pull/112145
2024-12-29 19:05:08 +00:00
Florian Hahn
4ad0fdd163
[VPlan] Remove reverse() of predecessors from VPInstruction::generate.
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.
2024-12-17 20:44:32 +00:00
Florian Hahn
7f7f540a48
Reapply "[VPlan] Update scalar induction resume values in VPlan. (#110577)"
This reverts commit f09b16e2671cbcdf7cb7dc7ed705db092a9deda1.

The crash when building llvm-test-suite with stage2 should have been
fixed by 1091fad31a83d5ab87eb6fa11fe3bdb3f0d152ea.
2024-12-06 19:41:51 +00:00
Nikita Popov
f09b16e267 Revert "[VPlan] Update scalar induction resume values in VPlan. (#110577)"
This reverts commit 0678e2058364ec10b94560d27ec7138dfa003287.
This reverts commit 1091fad31a83d5ab87eb6fa11fe3bdb3f0d152ea.

Causes crashes in llvm-test-suite when using stage 2 clang.
2024-12-06 18:01:42 +01:00
Florian Hahn
0678e20583
[VPlan] Update scalar induction resume values in VPlan. (#110577)
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
2024-12-06 12:26:19 +00:00
Florian Hahn
99d6c6d936
[VPlan] Model branch cond to enter scalar epilogue in VPlan. (#92651)
This patch moves branch condition creation to enter the scalar epilogue
loop to VPlan. Modeling the branch in the middle block also requires
modeling the successor blocks. This is done using the recently
introduced VPIRBasicBlock.

Note that the middle.block is still created as part of the skeleton and
then patched in during VPlan execution. Unfortunately the skeleton needs
to create the middle.block early on, as it is also used for induction
resume value creation and is also needed to properly update the
dominator tree during skeleton creation.

After this patch lands, I plan to move induction resume value and phi
node creation in the scalar preheader to VPlan. Once that is done, we
should be able to create the middle.block in VPlan directly.

This is a re-worked version based on the earlier
https://reviews.llvm.org/D150398 and the main change is the use of
VPIRBasicBlock.

Depends on https://github.com/llvm/llvm-project/pull/92525

PR: https://github.com/llvm/llvm-project/pull/92651
2024-07-05 10:08:42 +01:00
Florian Hahn
3808ba78de
[VPlan] Model middle block via VPIRBasicBlock. (#95816)
Use VPIRBasicBlock to wrap the middle block and implement patching up
branches in predecessors in VPIRBasicBlock::execute. The IR middle block
is only created after skeleton creation. Initially a regular
VPBasicBlock is created, which will later be replaced by a
VPIRBasicBlock once the middle IR basic block has been created.

Note that this slightly changes the order of instructions created in the
middle block; code generated by recipe execution in the middle block
will now be inserted before the terminator (and in between the compare
to used by the terminator). The original order will be restored in
https://github.com/llvm/llvm-project/pull/92651.


PR: https://github.com/llvm/llvm-project/pull/95816
2024-06-20 13:42:20 +01:00
Nuno Lopes
66a652ab08 recommit test for #65212 2023-09-04 09:17:18 +01:00
Muhammad Omair Javaid
42a46730bb Revert "fix test for #65212"
This reverts commit a0b0d7493db64d897ef68b43636810cfcb12bd22.

It has broken following buildbots:

https://lab.llvm.org/buildbot/#/builders/188/builds/34873
https://lab.llvm.org/buildbot/#/builders/245/builds/13538
https://lab.llvm.org/buildbot/#/builders/65/builds/11074
2023-09-04 12:53:12 +05:00
Nuno Lopes
a0b0d7493d fix test for #65212
I committed the wrong test, sorry.
2023-09-03 17:01:36 +01:00
Nuno Lopes
5a3fd5f3f5 [LoopVectorizer] Fix PR #65212: vectorization of reduction loop wasn't respecting original store alignment 2023-09-03 16:35:05 +01:00
Nuno Lopes
335a9bc4d9 precommit test for #65212 2023-09-03 16:33:57 +01:00