mirror of https://github.com/llvm/circt.git
4b2c78a13a
* [Pipeline] Add cross-block canonicalization break op In participation of the upcoming removal of the cross-block canonicalization guards in the `comb` canonicalizers, we're introducing a `pipeline.src` operation to the pipeline dialect. This operation is intended to alleviate the case of unintentional cross-block canonicalizations when a scheduled pipeline has not yet had its registers materialized. This operation, `pipeline.src`, effectively acts as a canonicalization boundary, creating an in-block reference to a value that is defined in a predecessor block. This means that we can keep our existing structure for unmaterialized, scheduled pipelines - values can be referenced from _any_ predecessor op through the `pipeline.src` operation, which still allows for said values to be easily moved across stages in a retiming scenario. Upon register materialization, these `pipeline.src` operations are trivially removed, effectively becoming the block arguments of the pipeline stages. * scheduling * extra test * some docs * integration tests * Review --------- Co-authored-by: Morten Borup Petersen <mpetersen@microsoft.com> |
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| .. | ||
| AIG | ||
| Arc | ||
| Calyx | ||
| Comb | ||
| DC | ||
| Debug | ||
| ESI | ||
| Emit | ||
| FIRRTL | ||
| FSM | ||
| HW | ||
| HWArith | ||
| Handshake | ||
| Interop | ||
| Kanagawa | ||
| LLHD | ||
| LTL | ||
| LoopSchedule | ||
| MSFT | ||
| Moore | ||
| OM | ||
| Pipeline | ||
| RTG | ||
| RTGTest | ||
| SSP | ||
| SV | ||
| Seq | ||
| Sim | ||
| SystemC | ||
| Verif | ||
| CMakeLists.txt | ||