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What are the differences of CC-RX compiler optimization levels?

Latest Updated:10/28/2014

Question:

I'm using the CC-RX compiler. What are the differences between the optimization levels of the compiler ?

Answer:

The reference materials listed below describe the optimization contents which differ with the optimization level.

  • If you are using CubeSuite+:
    Refer to the descriptions of -optimize, -size, and -speed in the following section of the CubeSuite+ V2.00.00 User's Manual: RX Build.
    • APPENDIX B COMMAND REFERENCE
    • B.1 RX Family C/C++ Compiler
    • B.1.3 Options
    • (1) Compile Options
    • Optimize Options
  • If you are using the High-performance Embedded Workshop:
    Refer to the descriptions of -optimize, -size, and -speed in the following section of the RX Family C/C++ Compiler, Assembler, Optimizing Linkage Editor User's Manual.
    • Section 2 C/C++ Compiler Options
    • 2.4 Optimize Options
    Those sections explain actual differences in optimization according to the optimization level.
Suitable Products
CS+ (formerly CubeSuite+)
High-performance Embedded Workshop
C/C++ Compiler Package for RX Family