https://bugs.freedesktop.org/show_bug.cgi?id=105426

--- Comment #4 from Emil Velikov emil.l.velikov@gmail.com --- Bisecting the issue to the offending commit would be a good move.

A small shader test [1] for piglit will also be a nice move. Thus one can easily reproduce and + ensure it doesn't happen in the future ;-)

[1] Simple example test https://cgit.freedesktop.org/piglit/tree/tests/shaders/glsl-algebraic-rcp-sq...