[codegen] Better handling of computed lengths #1251
Merged
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This fixes an issue where we were incorrectly truncating all computed lengths to u16, even if the resulting value is storedwould be stored as a u32.
We now keep computed values as usize and then generate a conversion for the appropriate type only at the callsite, instead of blindly converting to a u16 earlier on.
(this issue was pointed out in #1244 (comment); thanks @Hoolean!)