ldrb vs ldrh in gcc-3.4.4 (ARM)

[Bill Gatliff]

Steven:

Steven Scholz wrote:

> Hi,
>
>> And I don't understand why he is using two ldrb instructions!
>> Both compilers were called with "-g -O0" Using -O3 creates smaller 
>> code but still uses ldrb.
>
>
> Passing "-march=armv4" seems to help. Passing "-mcpu=arm920t" instead 
> helps too.
>
> I used Dan's crosstool to build the toolchain. How can I built a tool 
> chain that makes "good code" (TM) for an arm920t _by default_?
>

Doesn't crosstool have an arm7tdmi example?  I'd start there.

b.g.

-- 
Bill Gatliff
bgat@billgatliff.com


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