Oliver Stannard 376d7b27fa [ARM] Optimise byval arguments in tail-calls ...

We don't need to copy byval arguments to tail calls via a temporary, if
we can prove that we are not copying from the outgoing argument area.
This patch does this when the source if the argument is one of:
* Memory in the local stack frame, which can't be used for tail-call
  arguments.
* A global variable.

We can also avoid doing the copy completely if the source and
destination are the same memory location, which is the case when the
caller and callee have the same signature, and pass some arguments
through unmodified.

2024-10-25 09:34:09 +01:00

844 KiB

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