[Bug 64877] New: R600 OpenCL Regression since e917ed96ae38f

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64877

          Priority: medium
            Bug ID: 64877
          Assignee: dri-devel at lists.freedesktop.org
           Summary: R600 OpenCL Regression since e917ed96ae38f
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: awatry at gmail.com
          Hardware: All
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

Created attachment 79681
  --> https://bugs.freedesktop.org/attachment.cgi?id=79681&action=edit
Test case that passed before the bisected commit and fails on git head

Using the piglit
generated_tests/cl/builtin/int/builtin-int-min-1.1.generated.cl scalar test
cases (attached min.cl), results went from all passing to about half of the
test cases failing with the following commit:

Hardware:
Radeon HD 5400 series
Radeon HD 6850

e917ed96ae38fc382bac50a6536d761b829ac8cd is the first bad commit
commit e917ed96ae38fc382bac50a6536d761b829ac8cd
Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Fri May 3 11:15:55 2013 -0700

    r600g/llvm: Don't emit CALL_FS for vertex shaders

    The LLVM backend takes care of this now.


Each stage of the bisect was run using the matching LLVM revision specified in
mesa/src/gallium/drivers/radeon/LLVM_REVISION.txt

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