Code Generation Select ARM-Mode or Thumb-Mode for the application. Use Cross-Module Optimization enables the linker feedback file that allows further code optimizations. Select usage for the Floating Point Co-processor on devices that have a Vector Floating Point (VFP) co-processor: not used: code generated does not use any VFP instructions (Compiler switch: none, Assembler switch: none) library calls: compiler generates library calls that use VFP instructions (generates typically the smallest code and should be used when Thumb mode is selected) (Compiler switch: --fpu=softvfp+vfpv2, Assembler switch: --fpu=vfpv2) in-line (strict ANSI): compiler mostly uses the VFP unit with in-line code (generates fast code that conforms to the ANSI standard). (Compiler switch: --fpu=vfpu2, Assembler switch: --fpu=vfpv2) in-line (fast): compiler uses for all VFP instructions in-line code (error checking does not always conform to the ANSI standard). (Compiler switch: --fpu=vfpv2 --fpmode=fast, Assembler switch: --fpu=vfpv2)
Use MicroLIB to change the C run-time library set for smallest code application code. MicroLIB is not fully ANSI compatible but sufficient for most small embedded applications. 可以查看一下帮助文件中的说明
楼主
标题置顶
标题高亮
