One of the benefits of inlining is the we are able to propagate local site information from a caller to the callee being inlined. An inlined callee's stack typesets may be narrowed using the typesets for the parameters passed in from the caller. This is probably worth investigating for performance benefits.
Bug 804676 will do almost everything that we need here. That bug will cut the separate context-insensitive (aka inlining-insensitive) computation of stack type sets and make this part of IonBuilder. Narrowing type information within inlined frames falls out naturally from that, though there may be some followup work for narrowing observed type sets based on what is actually possible in the inlined frame.
Status: NEW → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 804676
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