On Wed, Aug 03, 2005 at 10:49:49AM -0700, Ian Lance Taylor wrote: > Gunther Nikl <[EMAIL PROTECTED]> writes: > > > "Attempt to delete prologue/epilogue insn" > > > > unless the stackslot was marked with MEM_VOLATILE_P. I don't think thats > > the proper fix. > > As Nathan said, you can add a USE. Or in some cases the correct fix > is to define EPILOGUE_USES and/or EH_USES.
Is EPILOGUE_USES only for the save and restore? I would have to add some big chunk of code to it and that would propagate to several places. It seems emitting a USE has lower impact. > In some cases this error message can indicate a bug in the > prologue/epilogue code. Here is what I am trying to do: I have a rs6000 port using V.4 ABI. The ABI has two fixed registers: r2 (_SDA2_BASE_) and r13 (_SDA_BASE_). I suppose normally these are initialized in an assembly file. I want the compiler emitting the appropriate load through a function attribute. Since I change the register it has to be saved and restored as well. Gunther
