[PATCH] Enable basic debug output for the MSP430 backend.

[Eric Christopher]

On Wed, Sep 17, 2014 at 10:26 AM, David Blaikie <dblaikie at gmail.com> wrote:

>
>
> On Wed, Sep 17, 2014 at 10:16 AM, Eric Christopher <echristo at gmail.com>
> wrote:
>
>> Sure, have at. I'm surprised that's all you need, but it's an obviously
>> correct incremental patch as well. If you had some way to test it that'd be
>> great too ;)
>>
>
> Any particular reason (I know nothing about msp430 - perhaps there's
> something inherent there that I'm missing) this wouldn't be testable in the
> usual manner? (bitcode + llc with a fixed triple + dwarfdump)
>

He's probably getting the right variables so you'd probably get those in
the right places, but ensuring they're correct might be a bit more
difficult.

ISTR that SystemZ had some decent tests for this, might want to look there.

-eric


>
>
>>
>> -eric
>>
>> On Wed, Sep 17, 2014 at 10:06 AM, Iain Sandoe <iain at codesourcery.com>
>> wrote:
>>
>>> Hi Adrian, Eric,
>>>
>>> It's sometimes useful to see what is needed to support backends with
>>> ints smaller than 32bit.
>>>
>>> This is a patch to enable basic debug output on the msp430 in-tree
>>> back-end so that it can be used to investigate such support.
>>>
>>> 1. The DWARF register numbers chosen have no particular rationale (but
>>> they match one GCC implementation, at least, for R0-R15)
>>>
>>> 2. I have not implemented any of the CFI_ stuff
>>>
>>> however, this does still allow examination of basic variable handling
>>> etc. (and the CFI stuff could be added as/when it becomes useful).  It's
>>> certainly enough to investigate DWARF handling of variable pieces.
>>>
>>> cheers
>>> Iain
>>>
>>>
>>>
>>>
>>>
>>>
>>
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>>
>
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