[Bug 110825] valgrind invalid reads when spilling

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110825

            Bug ID: 110825
           Summary: valgrind invalid reads when spilling
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: lemody at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

According to valgrind output there seems to be invalid reads when registers
gets spilled. I've bisected this to start happening with following commit:

b2d274c6775 intel/fs/ra: Choose a spill reg before throwing away the graph

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