[Bug 100068] LLVM ERROR: Cannot select: intrinsic %llvm.amdgcn.buffer.load.format

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100068

            Bug ID: 100068
           Summary: LLVM ERROR: Cannot select: intrinsic
                    %llvm.amdgcn.buffer.load.format
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: 375gnu at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 130077
  --> https://bugs.freedesktop.org/attachment.cgi?id=130077&action=edit
check for proper llvm version

I have mesa today's snapshot build against llvm 3.9.1.

When glxgears is started it aborts with the message:

LLVM ERROR: Cannot select: intrinsic %llvm.amdgcn.buffer.load.format

It looks like this intrinsic is supported with llvm 4.0 and higher, as when
mesa is build against llvm 4.0 apps work as expected.

A simple patch to fix this error is attached.

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