Oh, I see. Thanks! Wei.
On Wed, Mar 12, 2014 at 2:42 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Wed, Mar 12, 2014 at 2:36 PM, Wei Mi <w...@google.com> wrote: >> Hi H.J., >> >> Could you show me why you postpone the setting >> ix86_tls_descriptor_calls_expanded_in_cfun until reload_complete and >> use ix86_tls_descriptor_calls_expanded_in_cfun instead of >> ix86_current_function_calls_tls_descriptor? Isn't >> ix86_current_function_calls_tls_descriptor useful to consider the case >> that tls call is optimized away? >> > > When a tls call is optimized away, it won't survive reload. > If it does survive reload, it isn't optimized away. Also > checking df_regs_ever_live_p (SP_REG) isn't reliable > when called from ix86_compute_frame_layout. > > -- > H.J.
