Revert "Revert "Temporarily do not drop volatile stores before unreachable""
This reverts commit
52aeacfbf5ce5f949efe0eae029e56db171ea1f7.
There isn't full agreement on a path forward yet, but there is agreement that
this shouldn't land as-is. See discussion on https://reviews.llvm.org/D105338
Also reverts unreviewed "[clang] Improve `-Wnull-dereference` diag to be more in-line with reality"
This reverts commit
f4877c78c0fc98be47b926439bbfe33d5e1d1b6d.
And all the related changes to tests:
This reverts commit
9a0152799f8e4a59e0483728c9f11c8a7805616f.
This reverts commit
3f7c9cc27422f7302cf5a683eeb3978e6cb84270.
This reverts commit
329f8197ef59f9bd23328b52d623ba768b51dbb2.
This reverts commit
aa9f58cc2c48ca6cfc853a2467cd775dc7622746.
This reverts commit
2df37d5ddd38091aafbb7d338660e58836f4ac80.
This reverts commit
a72a44181264fd83e05be958c2712cbd4560aba7.