Half as many compute cores reported as when running with 'fglrx'

Submitted by Benji Wiebe

Assigned to Default DRI bug account

When using 'fglrx', this program (https://gist.github.com/BenjiWiebe/52a01924009d3534a5d6) reports 24 compute cores. When running with r600, it reports only 12.

I have only one GPU, a Radeon HD6970.

Version: 10.4

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