GCC4.3.4 downside against GCC3.4.4 on mips?

[Richard Guenther]

On Thu, May 27, 2010 at 1:37 PM, Paolo Bonzini <bonzini@gnu.org> wrote:
> On 05/27/2010 12:33 PM, Amker.Cheng wrote:
>>
>> while GCC3.4.4 treats the long long multiplication just like simple
>> ones, which generates only one
>> mult insn for each statement, like
>>
>> In my understanding, It‘s not necessary using three mult insn to implement
>> long long mult, since the operands are converted from int type.
>
> This is more helpful.  It is a known case in which GCC 4.x generates worse
> code.

Should be fixed with 4.6.

Richard.

> Paolo
>