[llvm-dev] [GlobalISel] Prioritizing long patterns in combiner over short ones

[Dominik Montada via llvm-dev]

Hi,

I'm currently writing target specific combiners with GlobalISel. I have 
a case where a sub-node of a larger pattern also matches another, 
smaller combiner pattern. Because the combiner runs top-down, the 
smaller pattern is matched before the larger pattern has a chance to be 
matched. Do I have to teach my larger pattern to handle this case or is 
there a better way to do this?

More importantly, are there any plans to improve this behavior?

Cheers,

Dominik

-- 
----------------------------------------------------------------------
Dominik Montada                   Email: dominik.montada at hightec-rt.com
HighTec EDV-Systeme GmbH          Phone: +49 681 92613 19
Europaallee 19                    Fax:   +49-681-92613-26
D-66113 Saarbrücken               WWW: http://www.hightec-rt.com

Managing Director: Vera Strothmann
Register Court: Saarbrücken, HRB 10445, VAT ID: DE 138344222

This e-mail may contain confidential and/or privileged information. If
you are not the intended recipient please notify the sender immediately
and destroy this e-mail. Any unauthorised copying, disclosure or
distribution of the material in this e-mail is strictly forbidden.
---

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 6822 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20201215/cd13213e/attachment.bin>