Revision 107218 changed addressing mode generation

Richard Guenther richard.guenther@gmail.com
Thu Mar 26 14:23:00 GMT 2009


2009/3/26 Bernd Schmidt <bernds_cb1@t-online.de>:
> Richard Guenther wrote:
>>
>> I'm bootstrapping/testing this change, so can you just check it helps
>> your case?
>
> As expected from the description, it doesn't.
>
> I'm attaching a reduced version of the testcase.  Compile with
>
>  cc1plus des.ii -O2 -fomit-frame-pointer  -fpreprocessed -quiet
>
> on bfin-elf.  With the current compiler you should see a lot of constants
> being loaded at the top of the loop, while with the patch I sent it should
> instead use offset addressing modes.

For x86_64 and i?86 the testcase produces exactly the same IL and asm
with/without your patch.  I'm now building a bfin-elf cross.

Richard.



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