On Wed, Mar 23, 2016 at 01:03:18AM +0100, Bernd Schmidt wrote:
> On 03/21/2016 02:43 AM, Alan Modra wrote:
> >
> >+enum valid_equiv { valid_none, valid_combine, valid_reload };
> >+
>
> Might be worth documenting that each step represents a superset of the
> previous one.
Fixed.
> >+ ret =
On 03/21/2016 02:43 AM, Alan Modra wrote:
+enum valid_equiv { valid_none, valid_combine, valid_reload };
+
Might be worth documenting that each step represents a superset of the
previous one.
+ ret = valid_combine;
+ if (! MEM_READONLY_P (memref)
+ && ! RTL_CONS
This function is used to validate REG_EQUIV notes generated by ira,
and to validate potential insn combines performed by ira. The two
conditions are not exactly the same, with reload being more
restrictive. Separate them so more combines/moves can occur.
For example, this sequence from cfgexpand
