Remove the backward jump from the T1C condition #414
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According to our performance analysis, backward jumps notably impact the performance of T1C, particularly in the case of qsort and FP emulation. While backward jumps assist in identifying chained blocks with loops, they also encompass blocks without loops. Upon implementing alternative mechanisms for loop detection, we were able to eliminate the need for backward jumps. | Metric | w backward | w/o backward | Speedup | |------------+------------+--------------+---------| |qsort | 1.865| 1.588| +14.85%| |FP emulation| 3.622| 2.761| +23.77%| |bitfield | 1.596| 1.610| -0.88%|
jserv
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Apr 17, 2024
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Benchmarks
| Benchmark suite | Current: efd94a4 | Previous: 374daeb | Ratio |
|---|---|---|---|
Dhrystone |
1759.66 Average DMIPS over 10 runs |
1741.44 Average DMIPS over 10 runs |
0.99 |
Coremark |
1498.311 Average iterations/sec over 10 runs |
1501.415 Average iterations/sec over 10 runs |
1.00 |
This comment was automatically generated by workflow using github-action-benchmark.
vacantron
approved these changes
Apr 18, 2024
vestata
pushed a commit
to vestata/rv32emu
that referenced
this pull request
Jan 24, 2025
Remove the backward jump from the T1C condition
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According to our performance analysis, backward jumps notably impact the performance of T1C, particularly in the case of qsort and FP emulation. While backward jumps assist in identifying chained blocks with loops, they also encompass blocks without loops. Upon implementing alternative mechanisms for loop detection, we were able to eliminate the need for backward jumps.