Martin Storsjö ac40c3bb07 checkasm: Test whether the native FFmpeg timers work ...

On some platforms (in particular, ARM/AArch64), the implementation
of AV_READ_TIME() may use a privileged instruction - in such
cases, benchmarking just fails with a SIGILL.

Instead of crashing, try executing AV_READ_TIME() once within
a region with the signal handler active, to allow gracefully
informing the user about the issue.

This matches the dav1d checkasm commit
95a192549a448b70d9542e840c4e34b60d09b093.

Signed-off-by: Martin Storsjö <martin@martin.st>

2024-01-15 23:29:12 +02:00

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