> On 21/04/16 12:45, Jan Hubicka wrote: > > this patch implements the long promised logic to inline across -ffast-math > > boundary when eitehr caller or callee has no fp operations in it. This is > > needed to resolve code quality regression on Firefox with LTO where > > -O3/-O2/-Ofast flags are combined and we fail to inline a lot of comdats > > otherwise. > > -Ofast turns allow-store-data-races param on. > are such params handled by lto?
No, allow-store-data-races is ignored by LTO option handling and whatever is used at final linktime wins. THis is because it is --param parameter rather than optimization option. Given the nature of the option, I wonder why it was implemented as --param thing? It looks like typical optimization option to me and this way we lose mechanizm to set it with function granuality like we can do other optimization options. Honza
