[llvm-bugs] [Bug 42116] New: [AMDGPU] using vec3 on SI doesn't seem to work correctly

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42116

            Bug ID: 42116
           Summary: [AMDGPU] using vec3 on SI doesn't seem to work
                    correctly
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedb...@nondot.org
          Reporter: samuel.pitoi...@gmail.com
                CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org

Created attachment 22068
  --> https://bugs.llvm.org/attachment.cgi?id=22068&action=edit
good_output

Hi,

I recently pushed a patch that removes the vec3 restriction to the LLVM backend
in Mesa [1]. This seems to work as expected on GFX8 and GFX9 (I don't have
GFX7), but it seems broken on GFX6.

See the two attachments (good and bad) of
dEQP-VK.glsl.builtin.precision.fract.mediump_compute.vec3.

[1]
https://cgit.freedesktop.org/mesa/mesa/commit/?id=6970a9a6ca9ea26a9e6cf968d3fec3565bef2e9b

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