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Pierre-Eric Pelloux-Prayer authored
This fixes a hang in shadertoy for radeonsi where a buffer was initialized with: value -= value with value being undefined. In this case LLVM replace the operation with an assignment to NaN. Cc: 19.1 19.2 <mesa-stable@lists.freedesktop.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111241 Reviewed-by: Marek Olšák <marek.olsak@amd.com> (cherry picked from commit 47cc660d)
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