Merge commit 37b7207651b4 from llvm-project (by zhongyunde@huawei.com):

Merge commit 37b7207651b4 from llvm-project (by zhongyunde@huawei.com):

  [SimplifyCFG] Fix crash when there is unreachable large index (#88616)

  The large case index out of scope is dead code, but it is still be
  created for TableContents in SwitchLookupTable::SwitchLookupTable,
  so make sure the table size after growing should not get smaller.

  Fix https://github.com/llvm/llvm-project/issues/88607

This should fix "Assertion failed: (idx < size()), function operator[]"
when building the science/dynare port.

PR:		276104, 278320
Reported by:	yuri
MFC after:	1 month