[llvm-dev] Duplicating node in SelectionDAG?

[Krzysztof Parzyszek via llvm-dev]

On 10/2/2015 10:30 AM, Ryan Taylor via llvm-dev wrote:
>
> It still doesn't match to the pattern:

You can run it with -debug-only=isel and it will show you what patterns 
are tried, what matches and what doesn't.  It should help you identify 
the source of the problem.

-Krzysztof

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