[PATCH] D39386: [Power9] Allow gpr callee saved spills in prologue to vector registers rather than stack

[Hal Finkel via Phabricator via llvm-commits]

hfinkel added a comment.

This is pretty neat.

Is the CFI limitation temporary? I imagine that you can use MCCFIInstruction::createRegister to indicate that the value that used to be in the GPR is now in the vector register?

Will be also be able to use this same infrastructure in order to save callee-saved condition registers to otherwise available GPRs (instead of to the stack)?


https://reviews.llvm.org/D39386