Hello, Does this touch or address the problem raised in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46219#c3 ?
[Uros Bizjak] >> For some reason, memory operand is prohibited in a sibcall, see >> predicates.md [...] [Richard Henderson] > That would be because we have no good way to say: global memory is fine, but > the on-stack memory that we just deallocated is not. > In addition for this case, we have to ensure that the registers used to do > the indexing are still valid after call-saved registers have been restored, > and avoid any call-clobbered registers that might be needed to execute the > epilogue. > In general I don't think this is solvable, but for this specific case we > could add a peephole. Thanks. Alexander
