================
@@ -896,6 +896,12 @@ def Launder : Builtin {
let Prototype = "void*(void*)";
}
+def StartObjectLifeTime : Builtin {
----------------
sam-mccall wrote:
For creating-objects-via-memcpy, what are we planning to do about the memcpy
part being UB and the start_lifetime part being correspondingly hard to specify
(what's the relationship between the bytes and the new objects?)
I thought a combined memcpy + start_object_lifetime intrinsic would solve this
neatly (values of new objects are the values of the old objects), but certainly
we want the start-lifetime-only part to support start_lifetime_as.
I don't see a great way out for non-implicit-lifetime types though...
https://github.com/llvm/llvm-project/pull/82776
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