2e627d3692
This PR moves the constructor layout code from C++ to Lean. When writing the new compiler, we just reused the existing C++ code, even though it was a bit inconvenient, because we wanted to ensure that constructor layout always matched the existing compiler. This fixes #2589 by handling struct field types just like any other type being lowered, and thus applying the trivial structure optimization in the process. Originally, I wanted to port the code to Lean without any functional changes, but I found that it took less code to just implement it "correctly" and get this fix as a consequence than to emulate the bugs of the existing C++ implementation. |
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