Merge branch 'for-loop-len-cache' of https://github.com/BobTheBuidler/mypy into for-loop-len-cache

Author: BobTheBuidler

mypyc/irbuild/for_helpers.py

@@ -1211,7 +1211,10 @@ def get_expr_length(expr: Expression) -> int | None:
         and expr.node.has_explicit_value
     ):
         return len(expr.node.final_value)
-    # TODO: extend this, unrolling should come with a good performance boost
+    # TODO: extend this, passing length of listcomp and genexp should have worthwhile
+    # performance boost and can be (sometimes) figured out pretty easily. set and dict
+    # comps *can* be done as well but will need special logic to consider the possibility
+    # of key conflicts
     return None
 
 

mypyc/test-data/irbuild-lists.test

@@ -901,4 +901,3 @@ L9:
 L10:
     a = r3
     return 1
-