TMS570LS1224: 18.1.4 LTS Call to memcpy are replaced

Hi Paulo,

In our debugging i found this:

The compiler generating above code for memcpy API.

First it is loading the addresses of destination, source and number of bytes into the R0, R1 and R2 respectively and after that it is calling __aeabi_memcpy4 API for actual data copying.

And here is the definition for the __aeabi_memcpy4 API:

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Thanks & regards,
Jagadish.

Hi Jagadish,

Thanks for you reply ...

Below you can see one very simple example of where the compiler (18.1.4 LTS) has replaced a call to memcpy with assembly language loads/stores:

For the above the source and destination were as follows:

static UINT32 UISource[4] = {0x0F0E0D0C, 0x0B0A0908, 0x07060504, 0x03020100};
static UINT32 UIDest[4] = {0x00FFEEDD, 0xCCBBAA99, 0x88776655, 0x44332211};

This leaves two questions from my initial post:

• Is there a way to instruct the compiler not to replace calls to memcpy?
• Is there a document which details a list of the different circumstances under which the compiler will determine that it can replace a call to memcpy?