When debugging a game that compiles a ton of shaders at beginning, it
can be very very slow because shaders cache was disabled by default
with RADV_DEBUG=hang.
To make debugging such a game faster, let's cache shaders with
RADV_DEBUG=hang. Note that only the backend IR (ACO or LLVM) and the
disassembly are stored in the cache. To get SPIR-V and NIR, you might
need RADV_DEBUG=hang,nocache.
This also handles the trap handler.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32246>
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