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4 Commits

Author SHA1 Message Date
Erik Eckstein
012aa6227d SIL: when updating borrowed-from instructions, remove the old enclosing values first 
When an optimization updates borrowed-from instruction it might be necessary to remove the old enclosing values from the borrowed-from instructions.
An optimization might transform the SIL in a way that an existing enclosing value is not valid anymore.
Fixes a compiler crash:
rdar://142991910
 2025-01-21 08:21:26 +01:00
Erik Eckstein
c58f04f165 PhiUpdater: fix a problem when incrementally updating borrowed-from instructions 
When replacing all uses, ignore existing borrowed-from instructions.

Fixes a SIL verifier error.
 2025-01-02 10:42:00 +01:00
Erik Eckstein
cd7c533d42 Optimizer: add SingleValueInstruction.replace(with:) and use it throughout the optimizer 
It replaces all uses and then erases the instruction.
 2024-12-19 20:53:45 +01:00
Erik Eckstein
6990a195a3 Optimizer: rename GuaranteedPhiUpdater -> PhiUpdater 
Because it now has the replacePhisWithIncomingValues utility, which works for all kind of phis.
 2024-12-12 09:09:11 +01:00