[patch 4/5] Remove cgraph.h dependence on hard-reg-set.h

[Jeff Law]

On 06/16/2015 11:20 AM, Andrew MacLeod wrote:
> cgraph.h requires hard-reg-set.h in order to compile simply because the
> cgraph_rtl_info structure contains a HARD_REG_SET element.
>
> All accesses to this structure are already handled by returning a
> pointer to the structure within the cgraph_node.  By moving the
> defintion of struct cgraph_rtl_info into rtl.h and maintaining a pointer
> to it instead of the structure within cgraph_node,  the compilation
> requirement on hard-reg-set.h can be completely removed when including
> cgraph.h.  This will hopefully help prevent bringing hard-reg-set and
> tm.h into a number of source files.
>
>   The structure in rtl.h is protected by  checking for HARD_CONST (which
> many other things in rtl.h do). This is mostly so generator files won't
> trip over them.  2 source files needed adjustment because they didn't
> include hard-reg-set.h before rtl.h.  I guess they never referenced the
> other things protected by HARD_CONST in the file.  This ordering issue
> should shortly be resolved by an include grouping.
>
> Bootstraps on x86_64-unknown-linux-gnu with no new regressions. Also
> passes all the targets in config-list.mk
>
> OK for trunk?
OK.
jeff