[Bug middle-end/103984] [12 regression] Possible maybe-uninitialized false positive on shaderc-2021.0 since r12-6329-g4f6bc28fc7dd86bd

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103984

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In particular, in ehcleanup1 it is the sink_clobbers optimization added for
PR51117.
I think it would be strongly preferrable to fix this in the FE, because if we'd
need to change sink_clobbers, I'd be afraid we'd get significantly worse code
generation with -flifetime-dse than before.