i found no relevant references to blas in the code, in either 4.2.0 or 2.6.0 (original version). all references are from upstream llvm, which doesn't require cblas either. i also tested rocm opencl chain without blas and it appears to work fine.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=abbb742dc2303704092ccc6b296ac300c19cd508 commit abbb742dc2303704092ccc6b296ac300c19cd508 Author: Craig Andrews <candrews@gentoo.org> AuthorDate: 2021-07-02 17:57:55 +0000 Commit: Craig Andrews <candrews@gentoo.org> CommitDate: 2021-07-02 18:03:55 +0000 sys-devel/llvm-roc: Remove unncessary dep on virtual/cblas Closes: https://bugs.gentoo.org/799857 Package-Manager: Portage-3.0.20, Repoman-3.0.3 Signed-off-by: Craig Andrews <candrews@gentoo.org> sys-devel/llvm-roc/llvm-roc-4.2.0.ebuild | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)