[PATCH] Improve RegisterCoalescer debugging experience

[Quentin Colombet]

Hi Matthias,

Thanks for working on this.
Here are my comments.

> 0001-Introduce-register-dump-helper.patch

I do not see in what dumpReg simplifies debugging compared to PrintReg.
Could you elaborate why do you think it is useful?

> 0002-When-multiple-debug-only-arguments-are-specified-han.patch

LGTM, though I would do a separate thread for this so that it gets more people attention.

> 0003-MachineVerifier-Report-register-for-bad-liveranges.patch

LGTM.

> 0004-Add-a-print-and-verify-pass-after-the-RegisterCoales.patch


LGTM.

> 0005-RegisterCoalescer-Improve-debug-messages.patch

LGTM.

Thanks again,
-Quentin


On Nov 18, 2014, at 7:20 PM, Matthias Braun <matze at braunis.de> wrote:

> Attached are 5 simple patches that improve the experience when debugging problems in the RegisterCoalescer.
> 
> Greetings
>    Matthias
> <0001-Introduce-register-dump-helper.patch><0002-When-multiple-debug-only-arguments-are-specified-han.patch><0003-MachineVerifier-Report-register-for-bad-liveranges.patch><0004-Add-a-print-and-verify-pass-after-the-RegisterCoales.patch><0005-RegisterCoalescer-Improve-debug-messages.patch>