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- Basic ZICondops patterns in the RISC-V target description
- Improvements to generate those patterns early in the RTL optimizer pipeline
- Improvements to the if-converter to consistently utilize the conditional zero primitive provided by ZICondops
Evaluation of the initial implementation has indicated that idioms to implement 32 bit operations on rv64 are consistently not if-converted. Improvements to capture those cases are in progress.
This work was initially implemented by a contractor working for Ventana with significant improvements from Ventana's engineers over time.
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