Re: PATCH: [4.4/4.5 Regression] -fschedule-insns causes FAIL: gcc.target/i386/vararg-1.c execution test

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Wed, Apr 7, 2010 at 2:27 AM, Jan Hubicka <hubicka@ucw.cz> wrote:
>> On 04/07/2010 07:57 AM, H.J. Lu wrote:
>>> Hi,
>>>
>>> "*sse_prologue_save_insn" generates movaps on 64bit aligned memory.
>>> This patch replaces movaps with movups. ?OK for trunk and 4.3/4.4/4.5
>>> branches?
>>
>> How is performance? ?Is it possible to detect alignment and use movaps
>> in that case?
>
> Also the memory ought to be aligned as guaranteed by the ABI. ?We will then use movaps to read SSE argument via va_arg anyway.
>

Here is the updated patch to align stack to 16byte for
FP register save area in 64bit mode.OK for trunk/4.4/4.5?

Thanks.


-- 
H.J.

Attachment: gcc-pr43668-2.patch
Description: Text document