[PATCH] D15340: Separate CSRs into a subset handled via explicit copies and a subset handled by prologue/epilogue

[Quentin Colombet via llvm-commits]

qcolombet added a comment.

Hi Manman,

Thanks for doing this!

A quick comment, would it be possible to have a command line option to force the use of this special handling as a follow-up patch?
It’s been a while I’d like to make some measurements to check how interesting this approach would be compared to our current handling of CSRs in reg alloc.

Thanks again!
Q.


http://reviews.llvm.org/D15340