About
The cam4 benchmark in spec2017 makes heavy use of complex double precision division which is implemented within the libgcc library. Complex division can be incredibly expensive due to the long latency, non-pipelineable, division operations and various special cases to deal with boundary conditions.
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Note that RISC-V does not have a reciprocal estimator, so we can't turn the divisions into reciprocal multiplications, but even so this should significantly improve performance.
Stakeholders/Partners
RISE:
Ventana: Jeff Law
External:
Dependencies
Status
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Updates
- Project reported as a priority for 1H2024
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