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Benchmarks
C51 Benchmarks
C251 Benchmarks
XC16x/C16x/ST10 Benchmarks
Keil C51 Code Comparison
The following benchmarks compare the output generated by the Keil C51 Version 5, Version 6, and Version 8 8051 compilers. The source code used for the benchmarks is included with the C51 Evaluation Software.
| Sieve Benchmarks |
Compiler | ||||
|---|---|---|---|---|---|
| C51 V8.05 | C51 V8.05 | C51 V6.12 | C51 V6.12 | C51 V5.02 | |
| Settings | |||||
| Memory Model | SMALL | SMALL | SMALL | SMALL | SMALL |
| ROM Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| Optimization Level | 9,SIZE | 8,SPEED | 9,SIZE | 8,SPEED | 6,SPEED |
| Performance | |||||
| Execution Time 12MHz 8051 |
6.012 secs | ||||
| Execution Time 25MHz 80C320 |
1.403 secs | ||||
| Code Size Module |
166 bytes | ||||
| Code Size Total |
1,240 bytes | ||||
| DATA Size Dynamic |
41 bytes | ||||
| Sieve Benchmarks |
Compiler | ||||
|---|---|---|---|---|---|
| C51 V8.05 | C51 V8.05 | C51 V6.12 | C51 V6.12 | C51 V5.02 | |
| Settings | |||||
| Memory Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| ROM Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| Optimization Level | 9,SIZE | 8,SPEED | 9,SIZE | 8,SPEED | 6,SPEED |
| Performance | |||||
| Execution Time 12MHz 8051 |
7.460 secs | ||||
| Execution Time 25MHz 80C320 |
1.743 secs | ||||
| Code Size Module |
209 bytes | ||||
| Code Size Total |
1,313 bytes | ||||
| DATA Size Dynamic |
22 bytes | ||||
| XDATA Size Dynamic |
8,237 bytes | ||||
| Dhrystone Benchmarks |
Compiler | ||||
|---|---|---|---|---|---|
| C51 V8.05 | C51 V8.05 | C51 V6.12 | C51 V6.12 | C51 V5.02 | |
| Settings | |||||
| Memory Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| ROM Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| Optimization Level | 9,SIZE | 8,SPEED | 9,SIZE | 8,SPEED | 6,SIZE |
| Performance | |||||
| Execution Time 12MHz 8051 |
1.033 secs | 1.112 secs | 1.029 secs | 1.096 secs | |
| Execution Time 25MHz 80C320 |
0.178 secs | 0.258 secs | 0.234 secs | 0.254 secs | |
| Code Size Module |
2,156 bytes | 1,717 bytes | 2,163 bytes | 1,905 bytes | |
| Code Size Total |
5,607 bytes | 5,197 bytes | 5,614 bytes | 5,269 bytes | |
| XDATA Size Dynamic |
5,523 bytes | 5,523 bytes | 5,523 bytes | 5,538 bytes | |
| Whetstone Benchmarks |
Compiler | ||||
|---|---|---|---|---|---|
| C51 V8.05 | C51 V8.05 | C51 V6.12 | C51 V6.12 | C51 V5.02 | |
| Settings | |||||
| Memory Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| ROM Model | LARGE | LARGE | LARGE | LARGE | LARGE |
| Optimization Level | 9,SIZE | 8,SPEED | 9,SIZE | 8,SPEED | 6,SIZE |
| Performance | |||||
| Execution Time 12MHz 8051 |
4.647 secs | 4.445 secs | 4.493 secs | ||
| Execution Time 25MHz 80C320 |
0.973 secs | 0.915 secs | 0.941 secs | ||
| Code Size Module |
3,596 bytes | 5,446 bytes | 4,306 bytes | ||
| Code Size Total |
186 bytes | 186 bytes | 189 bytes | ||
| XDATA Size Dynamic |
8,618 bytes | 10,486 bytes | 9,236 bytes | ||
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