[Bug 89784] Complex shader compilation fails (spilling related?) - dri-devel - freedesktop.org experimental mailing list

26 Mar 2015


      https://bugs.freedesktop.org/show_bug.cgi?id=89784
Bug ID: 89784
           Summary: Complex shader compilation fails (spilling related?)
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: greg@chown.ath.cx
        QA Contact: dri-devel@lists.freedesktop.org
Created attachment 114655
  --> https://bugs.freedesktop.org/attachment.cgi?id=114655&action=edit
LLVM assembly of shader
The attached shader (LLVM assembly, dumped with R600_DEBUG=ps) fails to compile
with latest LLVM trunk. AFAIR it worked at some point with some combination of
Mesa and LLVM, but I couldn't reproduce this.
Compile with
...
llc -march=amdgcn -mcpu=SI -mattr=+vgpr-spilling -verify-machineinstrs < bug.ll
to reproduce. It looks like it is spilling related.
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