[Bug 82544] New: Unreal Engine 4 Elemental fails to start up on Cape Verde with LLVM assertion failure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82544

          Priority: medium
            Bug ID: 82544
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Unreal Engine 4 Elemental fails to start up on Cape
                    Verde with LLVM assertion failure
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: michel at daenzer.net
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 104542
  --> https://bugs.freedesktop.org/attachment.cgi?id=104542&action=edit
R600_DEBUG=vs output for failing shader

Trying to start the Elemental demo ends with this LLVM assertion failure:

Elemental: /home/daenzer/src/llvm-git/llvm/lib/CodeGen/VirtRegMap.cpp:369: void
(anonymous namespace)::VirtRegRewriter::rewrite(): Assertion `PhysReg &&
"Invalid SubReg for physical register"' failed.

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