http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60438
--- Comment #33 from Richard Henderson <rth at gcc dot gnu.org> --- It sounds like inhibiting this stack combining would affect more 32-bit code than I'd like. I don't like the idea of REG_ARGS_SIZE_DELTA. The reason I went with absolute values in the first place for REG_ARGS_SIZE is that there were too many places where "deltas" matched up, but absolute values did not. And so we'd wind up cross-jumping illegally. I wonder if the best fix is to change the patterns not to rely on ix86_force_to_memory and ix86_free_from_memory, but instead have a memory operand to clobber right from the start. No fighting with dwarf2 or unwind info after the fact at all. I'll whip that up today and see what it looks like.
