jroelofs added a comment. In https://reviews.llvm.org/D28820#649738, @jroelofs wrote:
> In https://reviews.llvm.org/D28820#649726, @efriedma wrote: > > > Why can't the compiler handle this case itself transparently? According to > > your description, the interrupt calling convention is different from the > > normal hard-float AAPCS calling convention: the VFP registers are all > > callee-save. The compiler knows this; it should be able to insert the > > appropriate spills itself. > > > There would be a big performance penalty for ISRs with callees that don't use > VFP regs. Then again, it probably makes sense to add all the VFP regs to the ISR calling convention's CalleeSavedRegs, as the ISR /should/ be spilling them if it uses them. https://reviews.llvm.org/D28820 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
