GNU Arm Embedded Toolchain

Generating Cortex-M4 DSP instructions

Asked by STG

Does gcc generate any of the DSP instructions available in the Cortex-M4?
I am having trouble writing C code that translates to any of these instructions, perhaps I am simply missing a compiler flag?
Is there a list of supported instructions anywhere (in the source code)?

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Joey Ye
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Best Joey Ye (jinyun-ye) said : 		#1

They are simply not supported by GCC so far. My suggestion would be to use CMSIS, which wrap all DSP instructions with macros.

Joey

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STG (senseitg) said : 		#2

Thanks Joey Ye, that solved my question.