How to inline C string functions

[jpburke]

Is there a way to inline C library string functions like strcpy and strcmp? I'm assuming ICC does have inline-able versions of these functions?

Thanks.

[TimP]

Quoting - jpburke

Is there a way to inline C library string functions like strcpy and strcmp? I'm assuming ICC does have inline-able versions of these functions?

If you look at the icc header files, you will see that there are special sse4.2 strcmp intrinsics in You could look up the white papers on the subject.
In libirc, you will find sse2 and sse4 versions of strcpy(); unlike memcpy(), the function isn't amenable to in-lining, even for specific short constant string lengths, although you are welcome to supply your own source code.

[JenniferJ]

Compiler will decide what's best to use in the code. Different places may use different strcpy. It depends on the length of the string, and there're many versions of strcpy/strcmp etc.

So just try different options, and see which one gives you the best performance on your targeted system.

Jennifer

[jpburke]

Quoting - Jennifer Jiang (Intel)

Compiler will decide what's best to use in the code. Different places may use different strcpy. It depends on the length of the string, and there're many versions of strcpy/strcmp etc.

So just try different options, and see which one gives you the best performance on your targeted system.

Jennifer

Is there a compiler option that will output which function calls have been replaced with intrinic functions?

Thanks

[Om_S_Intel]

Quoting - jpburke

Is there a compiler option that will output which function calls have been replaced with intrinic functions?

Thanks

There is no such documented option.