On Sun, 2015-11-15 at 15:39 -0500, Rich Felker wrote: > > This is basically the same as above ... it's not possible to > > conditionally construct/modify pattern descriptions in the .md. > > However, it's possible to modify the CALL_INSN_FUNCTION_USAGE > > field of > > call insns -- for some examples see 'grep -r > > CALL_INSN_FUNCTION_USAGE > > gcc/config/*'. Also, it seems the SH backend doesn't make use of > > some > > existing libcall related parameters and target hooks/macros. Maybe > > those could be helpful. > > I'll take a look at this. Let me know if you turn up anything > interesting.
I'm currently working on other things, sorry. > > > > Maybe TARGET_USE_PSEUDO_PIC_REG could be useful? > > Yes. Is there any documentation on using it? I came across that but > couldn't figure out how it compares to just doing the pseudo yourself > in the target files. Is non-target-specific code affected by this? Yes, non-target-specific code seems to be affected by this in some way, although I don't know any details. Due to lack of documentation you'll have to grep yourself through it by looking for "USE_PSEUDO_PIC_REG" and "use_pseudo_pic_reg" to find the places where it's used. Cheers, Oleg
