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3 Commits

Author SHA1 Message Date
Erik Eckstein
7bbf66ab5b ReadOnlyGlobalVariables: don't convert external global vars to lets 
Because we don't know if external variables will be written

Fixes a miscompile
rdar://109476745
 2023-05-19 18:28:22 +02:00
Erik Eckstein
3d555a412a refactor two swift passes 
NFC
 2023-05-10 16:04:57 +02:00
Erik Eckstein
960ca70def Swift Optimizer: add the module pass ReadOnlyGlobalVariables 
It marks global `var` variables as `let` if they are never written.
 2023-05-08 21:23:36 +02:00