[Bug 96959] nop.sat generated by pow workaround?

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96959

            Bug ID: 96959
           Summary: nop.sat generated by pow workaround?
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: mattst88 at gmail.com
          Reporter: kenneth at whitecape.org
        QA Contact: intel-3d-bugs at lists.freedesktop.org

With Mesa 93794145dd5959d905b65234cf87de3bff801aeb (recent master),

INTEL_DEBUG=fs ./run shaders/closed/3dmmes-taiji/42.shader_test produces:

math.sat pow(16) g2<1>F         g9<8,8,1>F      0.15F           { align1 1H };
nop.sat                                                         ;

It's surprising to see a saturated no-op.  It's probably harmless, but I'm not
sure why we'd be generating one of those anyway.  Could other things leak in,
like predication?  Does it matter?

Matt, I figured I'd mention this in case you were interested.  If you think
it's harmless, feel free to close this as NOTABUG.

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