AN720 データシートの表示（PDF） - Silicon Laboratories

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AN720

PRECISION32 OPTIMIZATIONCONSIDERATIONS FOR CODESIZE ANDSPEED

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AN720

Table 25. Keil Unused Code Removal Comparison—sim3u1xx_Blinky Debug

Library

µVision MicroLIB with no

unused code removal

µVision MicroLIB with

unused code removal

Code (bytes)

1392

Read Only Data Read-Write Data Zero-Initialized

(bytes)

(bytes)

Data (bytes)

296

12

1536

1184

296

12

1536

Table 26. Keil Unused Code Removal Comparison—demo_si32UsbAudio Debug

Library

µVision MicroLIB with no

unused code removal

µVision MicroLIB with

unused code removal

Code (bytes)

47264

Read Only Data Read-Write Data Zero-Initialized

(bytes)

(bytes)

Data (bytes)

3832

5208

17972

43464

3772

5060

17780

Table 27. Keil Unused Code Removal Comparison—CoreMark Debug Size

Library

µVision MicroLIB with no

unused code removal

µVision MicroLIB with

unused code removal

Code (bytes)

11276

Read Only Data Read-Write Data Zero-Initialized

(bytes)

(bytes)

Data (bytes)

636

156

3536

11012

636

156

3536

Table 28. Keil Unused Code Removal Comparison—CoreMark Debug Speed

Library

µVision MicroLIB with no

unused code removal

µVision MicroLIB with

unused code removal

CoreMark Score

CoreMark 1.0 : 69.402324 / ARM4.2 (EDG gcc mode) Iterations=3000 / STACK

CoreMark 1.0 : 67.374626 / ARM4.2 (EDG gcc mode) Iterations=3000 / STACK

26

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