Optimizer: improve TempLValueOpt #81969
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…undef` and the `prepareInitialization` and `zeroInitializer` builtins
…nSet` Instead, remove `Operand.users(ofType:)` which returned a sequence of `Instruction` - which was a kind of replacement for the missing `InstructionSet` API
…e is in its operand list
…tion to OptUtils, so that other passes can use it as well
* re-implement the pass in swift * support alloc_stack liveranges which span over multiple basic blocks * support `load`-`store` pairs, copying from the alloc_stack (in addition to `copy_addr`) Those improvements help to reduce temporary stack allocations, especially for InlineArrays. rdar://151606382
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load-storepairs, copying from the alloc_stack (in addition tocopy_addr)Those improvements help to reduce temporary stack allocations, especially for InlineArrays.
rdar://151606382