On Mon, Jul 14, 2008 at 10:04:08AM +1000, [EMAIL PROTECTED] wrote:
> I have a piece of C code. The code, compiled to an ARM THUMB target using
> gcc 4.0.2, with -Os results in 230 instructions. The exact same code,
> using the exact same switches compiles to 437 instructions with gcc 4.3.1.
> Consi
Just a tentative question about a problem:
I have a piece of C code. The code, compiled to an ARM THUMB target using
gcc 4.0.2, with -Os results in 230 instructions. The exact same code,
using the exact same switches compiles to 437 instructions with gcc 4.3.1.
Considering that the compiler optimi
On Sun, Jul 13, 2008 at 6:29 AM, Andi Kleen <[EMAIL PROTECTED]> wrote:
> Nils Pipenbrinck <[EMAIL PROTECTED]> writes:
>
>> Since the codebase is huge I have the feeling that I have overlooked
>> something. Does some kind of infrastructure to detect patterns within
>> a SSA tree already exists somew
Nils Pipenbrinck <[EMAIL PROTECTED]> writes:
> Since the codebase is huge I have the feeling that I have overlooked
> something. Does some kind of infrastructure to detect patterns within
> a SSA tree already exists somewhere else?
FWIW some time ago I wanted to do some other arithmetic optimizat
