On Mon, Aug 8, 2011 at 8:16 AM, Uros Bizjak wrote:
> Hello!
>
> Attached patch implements addr32 prefixed addresses for x86_64
> targets, where memory locations are accessed with 32bit base and index
> registers in the form (zero_extend:DI (... SImode registers ...)).
> The optimization rarely (if
On 08/08/2011 05:16 PM, Uros Bizjak wrote:
BTW: There is a strange optimization in combine pass, where
zero-extended address is converted on-the-fly to:
Trying 9 -> 10:
Failed to match this instruction:
(... (and:DI (subreg:DI (plus:SI (ashift:SI (reg/v:SI 63 [ i ])
(const_
Hello!
Attached patch implements addr32 prefixed addresses for x86_64
targets, where memory locations are accessed with 32bit base and index
registers in the form (zero_extend:DI (... SImode registers ...)).
The optimization rarely (if at all) triggers on x86_64, but is very
important on x32 (see
