[PATCH] D41967: [PPC] Return PPC::CARRY for inline asm constraint "{xer}"

[Eric Christopher via Phabricator via llvm-commits]

echristo added a comment.

I think instead you want to add an alias in PPC similar to this:

def XER: SPR<1, "xer">, DwarfRegNum<[76]>;

// Carry bit.  In the architecture this is really bit 0 of the XER register
// (which really is SPR register 1);  this is the only bit interesting to a
// compiler.
def CARRY: SPR<1, "xer">, DwarfRegNum<[76]> {

  let Aliases = [XER];

}

Does this work on your testcase?

-eric


https://reviews.llvm.org/D41967