On 10/2/19 2:40 PM, Richard Henderson wrote: > On 10/2/19 10:38 AM, Alex Bennée wrote: >> Is the denbcdq instruction exposed in any standard float operations? >> Once this is fixed it would be worth adding a testcase (either ppc64 >> specific or multiarch) so protect it from regression in the future. > > Not standard float operations -- this is binary coded decimal stuff. > It would certainly be possible to write a ppc specific test case.
In comment #9 in the bug (https://bugs.launchpad.net/qemu/+bug/1841990/comments/9), I note that the issue was produced in running the test suite for the Power Vector Library project (https://github.com/open-power-sdk/pveclib), which makes productive use of dcbenq. Maybe that could be adopted or adapted to suit? PC
