Hahnfeld added a comment. In https://reviews.llvm.org/D52733#1251421, @ABataev wrote:
> It might lead to increased register pressure, isn't it? Currently, I'm trying > to emit the code that can be optimized out and, thus, may decrease the > register pressure. That's why I tried to reduce the number of the runtime > checks. You are right, it's increasing register usage but I think it shouldn't: The generated code is always checking `__kmpc_is_spmd_exec_mode` first. So if LLVM would be able to optimize this out in SPMD mode, `__kmpc_parallel_level` should never be called. I guess this doesn't work because it's illegal to hoist the load of `execution_param` across a barrier? Repository: rC Clang https://reviews.llvm.org/D52733 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
