* Help regarding code optimization
@ 2013-01-13 15:34 Yogesh Tyagi
2013-01-14 13:52 ` Jonathan Wakely
0 siblings, 1 reply; 2+ messages in thread
From: Yogesh Tyagi @ 2013-01-13 15:34 UTC (permalink / raw)
To: gcc-help
Hi,
Can anybody help me to understand why can't gcc optimize the code
using SSE and MMX instructions for any given architecture.Why I need
to write assembly code to use SSE and MMX instructions?
Thanks,
Yogesh
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Help regarding code optimization
2013-01-13 15:34 Help regarding code optimization Yogesh Tyagi
@ 2013-01-14 13:52 ` Jonathan Wakely
0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Wakely @ 2013-01-14 13:52 UTC (permalink / raw)
To: Yogesh Tyagi; +Cc: gcc-help
On 13 January 2013 13:37, Yogesh Tyagi wrote:
> Hi,
>
> Can anybody help me to understand why can't gcc optimize the code
> using SSE and MMX instructions for any given architecture.Why I need
> to write assembly code to use SSE and MMX instructions?
With the complete lack of details you've supplied noone can really help.
What have you tried? What compiler flags did you use?
What results did you get?
What architecture are you using? Did you tell the compiler to generate
code for that architecture? (As opposed to e.g. for 486)
^ permalink raw reply [flat|nested] 2+ messages in thread
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