rjmccall added inline comments.
================
Comment at: lib/CodeGen/CGExprAgg.cpp:421
+ // with explicit initializers should be large enough.
+ if (NumInitElements > 8 && elementType->isBuiltinType()) {
+ CodeGen::CodeGenModule &CGM = CGF.CGM;
----------------
Is there a good reason to use an element-count heuristic instead of a
total-size heuristic here?
Why only builtin types? That seems to pointlessly rule out nested arrays,
complex types, vectors, C structs, and so on. I think the predicate you
probably want here is isTriviallyCopyableType.
Repository:
rL LLVM
https://reviews.llvm.org/D43181
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