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Revision tags: llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3 |
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| #
06bb8c9f |
| 26-Mar-2024 |
Florian Hahn <flo@fhahn.com> |
[VPlan] Explicitly handle scalar pointer inductions. (#83068)
Add a new PtrAdd opcode to VPInstruction that corresponds to
IRBuilder::CreatePtrAdd, which creates a GEP with source element type
i8.
[VPlan] Explicitly handle scalar pointer inductions. (#83068)
Add a new PtrAdd opcode to VPInstruction that corresponds to
IRBuilder::CreatePtrAdd, which creates a GEP with source element type
i8.
This is then used to model scalarizing VPWidenPointerInductionRecipe by
introducing scalar-steps to model the index increment followed by a
PtrAdd.
Note that PtrAdd needs to be able to generate code for only the first
lane or for all lanes. This may warrant introducing a separate recipe
for scalarizing that can be created without relying on the underlying
IR.
Depends on https://github.com/llvm/llvm-project/pull/80271
PR: https://github.com/llvm/llvm-project/pull/83068
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Revision tags: llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4, llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init, llvmorg-15.0.7, llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, working, llvmorg-15.0.2 |
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| #
623c4a7a |
| 23-Sep-2022 |
Florian Hahn <flo@fhahn.com> |
[LoopVersioning] Invalidate SCEV for phi if new values are added.
After 20d798bd47ec5191d, SCEV looks through PHIs with a single incoming
value. This means adding a new incoming value may change the
[LoopVersioning] Invalidate SCEV for phi if new values are added.
After 20d798bd47ec5191d, SCEV looks through PHIs with a single incoming
value. This means adding a new incoming value may change the SCEV for a
phi. Add missing invalidation when an existing PHI is reused during
LoopVersioning. New incoming values will be added later from the
versioned loop.
Similar issues have been fixed by also adding missing invalidation.
Fixes #57825.
Note that the test case unfortunately requires running loop-vectorize
followed by loop-load-elimination, which does the actual versioning. I
don't think it is possible to reproduce the failure without that
combination.
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